1) Which of the following organisms conducts gas exchange via diffusio.pdf
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1) Which of the following organisms conducts gas exchange via diffusion across the body surface? a) Both an earthworm and a clam b) an earthworm c) a beetle d) a clam e) a chiton 2) Trematodes lack dedicated circulatory systems because _____. a) their body cavity, a pseudocoelom, carries out these functions b) they have an extensive body surface that is kept moist. c) none of their cells are far removed from the gastrovascular cavity or from the external environment d) they lack mesoderm as embryos and, therefore, lack the adult tissues derived from mesoderm 3) All of the following might have been observed in the most recent common ancestor of Chondrichthyans and Actinopterygiii, except... a) scales b) a mineralized skeleton c) gills d) a swim bladder 4) How are urochordates and cephalochordates similar? a) Both have motile larvae that become sessile adults. b) Both have a heart with two chambers. c) Both have an endoskeleton of either bone or cartilage. d) Both have adults that are suspension feeders. 5) What is believed to be the most significant result of the evolution of the amniotic egg? a) Tetrapods could lay their eggs in a variety of terrestrial locations. b) Tetrapods can grow much larger. c) Newborns are much less dependent on their parents. d) Embryos are protected from predators. 6) Which of the following are the most abundant and diverse of the extant vertebrates? a) Birds b) Amphibians c) Mammals d) Ray-finned fishes 1) Which of the following organisms conducts gas exchange via diffusion across the body surface? a) Both an earthworm and a clam b) an earthworm c) a beetle d) a clam e) a chiton 2) Trematodes lack dedicated circulatory systems because _____. a) their body cavity, a pseudocoelom, carries out these functions b) they have an extensive body surface that is kept moist. c) none of their cells are far removed from the gastrovascular cavity or from the external environment d) they lack mesoderm as embryos and, therefore, lack the adult tissues derived from mesoderm 3) All of the following might have been observed in the most recent common ancestor of Chondrichthyans and Actinopterygiii, except... a) scales b) a mineralized skeleton c) gills d) a swim bladder 4) How are urochordates and cephalochordates similar? a) Both have motile larvae that become sessile adults. b) Both have a heart with two chambers. c) Both have an endoskeleton of either bone or cartilage. d) Both have adults that are suspension feeders. 5) What is believed to be the most significant result of the evolution of the amniotic egg? a) Tetrapods could lay their eggs in a variety of terrestrial locations. b) Tetrapods can grow much larger. c) Newborns are much less dependent on their parents. d) Embryos are protected from predators. 6) Which of the following are the most abundant and diverse of the extant vertebrates? a) Birds b) Amphibians c) Mammals d) Ray-finned fishes 5) What is believed to be the most significant result of the evolution of the amniotic.
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1- What is the advantage of the high surface-area-to-volume ratio of t.docx
1. What is the advantage of the high surface-area-to-volume ratio of the fungal mycelium?
a) This high ratio means that fungi have a thick, fleshy structure that allows the fungi to store more of the food it absorbs.
b) The lower volume prevents the cells from drying out too quickly, which can interfere with absorption.
c) This high ratio creates more room inside the cells for additional organelles involved in absorption.
d) The larger surface area allows for more material to be absorbed across the cell membrane.
2. Fungi commonly known as "mushrooms" produce which of the following sexual reproductive structures?
a) Asci
b) Basidia
c) Zygosporangia
d) Gametes
3. The closest living relatives of animals are likely...
a) multicellular algae
b) multicellular fungi
c) flagellated protists
d) unicellular chytrids
4. One advantage of a coelom is that it...
a) allowed for the evolution of cephalization and the formation of a cerebral ganglion
b) allows for asexual and sexual reproduction
c) provides a more efficient digestive system
d) contributes to a hydrostatic skeleton, allowing for movement in soft-bodied animals
5. Members of phylum Porifera...
a) exhibit a pseudocoleom
b) are typically asymmetric, though some species exhibit radial symmetry
c) are diplobastic
d) have a nerve net, but not a central nervous system
6. Animals in each Phylum listed below exhibit segmentation, except...
a) Annelida
b) Arthropoda
c) Nematoda
d) Chordata
7. The term "Cambrian explosion" refers to which of the following?
a) A rapid increase in the diversity of animals, including the appearance of all major animal body plans.
b) A rapid increase in the abundance of animals present on Earth
c) The asteroid crash that wiped out the dinosaurs 66 mya
d) An earthquake that unearthed a large fossil-bearing deposit called the Burgess shale near in BC near the Alberta border.
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BSC1005 Biology General Chapter 6 1 Chapter 6 Cel.docx
BSC1005 Biology General
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1
Chapter 6: Cell Energy, Transport and Enzymes
1) Many of the enzymes that control a deep-sea firefly squid's ability to produce light energy from chemical energy are located
A) in membranes.
B) in the nucleus.
C) within chloroplasts.
D) outside of cells.
E) within mitochondria.
2) The fluid mosaic model describes the plasma membrane as consisting of
A) a phospholipid bilayer with embedded carbohydrates.
B) two layers of phospholipids with protein sandwiched between them.
C) a protein bilayer with embedded phospholipids.
D) carbohydrates, proteins, and phospholipids that can drift in the membrane.
E) individual proteins and phospholipids that can drift in a phospholipid bilayer.
3) Membrane phospholipids
A) have hydrophobic heads that face the center of the membrane and are shielded from water.
B) have hydrophilic tails that face outward and are exposed to water.
C) often have "kinks" in their tails caused by the presence of a double bond between carbons.
D) remain fluid because they are tightly packed against one another.
E) form impermeable layers for cells.
4) The cholesterol associated with animal cell membranes
A) is attached to membrane proteins and extends into the watery environment surrounding the cell.
B) helps to stabilize the cell membrane at body temperature.
C) makes the cell membrane fluid at room temperature.
D) is an abnormality resulting from a diet high in cholesterol.
E) helps solidify the membranes when the room temperature is below freezing.
5) A major function of glycoproteins and glycolipids in the cell membrane is to
A) glue cells together to form tissues.
B) allow the cells of an embryo to sort themselves into tissues and organs.
C) attach the cell membrane to the cytoskeleton.
D) help the cell resist swelling.
E) help the cell retain its shape.
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A) plasma membrane phospholipids
B) plasma membrane proteins
C) cell-surface carbohydrates
D) plasma membrane cholesterols
E) cytoskeletal elements
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B) proteins.
C) phospholipids.
D) cholesterol.
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find a medusa stage? a. Polychaeta b. Cnidaria c. centipedes d. Gastropoda e. tapeworms 30.
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tubules b. two pairs of antennae c. compound eyes d. a tracheal system e. an open circulatory
system 34. Spiders differ from insects by having a. segmentation b. an open circulatory system c.
an abdomen d. an exoskeleton e. book lungs 35. What is the gas exchange system in insects
called? a. Malpighian tubules b. book lungs c. external gills d. tracheal system e. complete
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32 animaldiversity text
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Mammals have two traits that set them apart from all other animals. These are
A) amniotic eggs and milk production.
B) body hair or fur, and milk production.
C) four-chambered heart and body hair or fur.
D) four-chambered heart and milk production.
E) body hair or fur, and being homeothermic.
3.
Which of the following adaptations to life on land is found in both insects and modern reptiles?
A) metamorphosis from a larval form
B) tracheae to distribute oxygen
C) two pairs of walking legs
D) ability to fly
E) body surfaces that resist evaporation
6.
Cnidarians and ctenophores are similar in that they both have
A) radial symmetry.
B) a digestive tract with two openings.
C) a pseudocoel.
D) mesoderm.
E) nematocysts.
7.
In cnidarians, nematocysts are important in
A) movement.
B) obtaining oxygen from the water.
C) excretion of wastes.
D) obtaining prey.
E) food digestion.
13.
The segmented worms of the phylum Annelida
A) display radial symmetry.
B) move by use of flagella.
C) have an open circulatory system.
D) are acoelomate.
E) possess setae on each segment.
17.
It is generally thought that four critical innovations arose during the evolution of our ape-like ancestors into humans. All of the following are innovations except
A) bipedalism.
B) toolmaking.
C) expansion of the human brain.
D) use of brain power for abstract thought.
E) development of the opposable thumb.
18.
It is generally thought that animals have undergone four major physiological and anatomical innovations during their evolution. These are (in no particular order)
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B) multicellularity, bilateral symmetry, origin of patterns of embryonic development, development of tissues.
C) development of tissues, photosynthesis, bilateral symmetry, multicellularity.
D) development of the versatile forelimb, multicellularity, origin of patterns of embryonic development, development of tissues.
E) bilateral symmetry, development of tissues, origin of the multichambered heart, origin of patterns of embryonic development.
19.
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b) The lower volume prevents the cells from drying out too quickly, which can interfere with absorption.
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d) The larger surface area allows for more material to be absorbed across the cell membrane.
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a) Asci
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d) Gametes
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a) multicellular algae
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a) allowed for the evolution of cephalization and the formation of a cerebral ganglion
b) allows for asexual and sexual reproduction
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a) Annelida
b) Arthropoda
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d) Chordata
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a) A rapid increase in the diversity of animals, including the appearance of all major animal body plans.
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d) An earthquake that unearthed a large fossil-bearing deposit called the Burgess shale near in BC near the Alberta border.
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BSC1005 Biology General
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Chapter 6: Cell Energy, Transport and Enzymes
1) Many of the enzymes that control a deep-sea firefly squid's ability to produce light energy from chemical energy are located
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C) within chloroplasts.
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A) a phospholipid bilayer with embedded carbohydrates.
B) two layers of phospholipids with protein sandwiched between them.
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E) help the cell retain its shape.
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become fully .
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This document provides an overview of several phyla within the kingdom Animalia. It begins by describing key characteristics of multicellular animals (Metazoa) including multicellularity, mobility, collagen possession, and heterotrophic feeding. It then summarizes important traits of sponges (Porifera), including their lack of tissues and organs and water canal systems. It also briefly outlines cnidarians, ctenophores, bilateral animals, and several protostome and pseudocoelomate phyla.
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32 animaldiversity text
- The document discusses the phylum Platyhelminthes, which includes flatworms. It describes their body structure, classes, and life cycles. Turbellarians are free-living flatworms, while monogeneans and trematodes are parasitic. Trematodes have complex life cycles involving snail and human hosts.
2. Mammals have two traits that set them apart from all other an.docx
2.
Mammals have two traits that set them apart from all other animals. These are
A) amniotic eggs and milk production.
B) body hair or fur, and milk production.
C) four-chambered heart and body hair or fur.
D) four-chambered heart and milk production.
E) body hair or fur, and being homeothermic.
3.
Which of the following adaptations to life on land is found in both insects and modern reptiles?
A) metamorphosis from a larval form
B) tracheae to distribute oxygen
C) two pairs of walking legs
D) ability to fly
E) body surfaces that resist evaporation
6.
Cnidarians and ctenophores are similar in that they both have
A) radial symmetry.
B) a digestive tract with two openings.
C) a pseudocoel.
D) mesoderm.
E) nematocysts.
7.
In cnidarians, nematocysts are important in
A) movement.
B) obtaining oxygen from the water.
C) excretion of wastes.
D) obtaining prey.
E) food digestion.
13.
The segmented worms of the phylum Annelida
A) display radial symmetry.
B) move by use of flagella.
C) have an open circulatory system.
D) are acoelomate.
E) possess setae on each segment.
17.
It is generally thought that four critical innovations arose during the evolution of our ape-like ancestors into humans. All of the following are innovations except
A) bipedalism.
B) toolmaking.
C) expansion of the human brain.
D) use of brain power for abstract thought.
E) development of the opposable thumb.
18.
It is generally thought that animals have undergone four major physiological and anatomical innovations during their evolution. These are (in no particular order)
A) origin of patterns of embryonic development, development of the versatile forelimb, origin of the multichambered heart, multicellularity.
B) multicellularity, bilateral symmetry, origin of patterns of embryonic development, development of tissues.
C) development of tissues, photosynthesis, bilateral symmetry, multicellularity.
D) development of the versatile forelimb, multicellularity, origin of patterns of embryonic development, development of tissues.
E) bilateral symmetry, development of tissues, origin of the multichambered heart, origin of patterns of embryonic development.
19.
Which of the following is not a characteristic differentiating Neanderthals from modern humans?
A) Neanderthals had larger noses.
B) Neanderthals had projecting brow ridges.
C) Neanderthals were stronger.
D) Neanderthals were shorter.
E) Neanderthals had smaller brains.
.
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2. It provides details on the defining characteristics of each phylum, including their habitat, body structure, digestive system, symmetry, and any specialized structures or cells.
3. The major animal groups that define each phylum are mentioned, such as sponges, jellyfish, flatworms, roundworms, earthworms, insects, mollusks, starfish and sea urchins, and
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The Ruritanian Chemical Company shows the following account balances for the month of May
2017 in Ruritanian dollars (R$). Calculate the cost of goods manufactured for May 2017. Also,
prepare an income statement for May 2017. R$ Customer service cost 800 Direct manufacturing
labour 5000 Depreciation plant and equipment 3000 Revenue 51000 Marketing and advertising
1800 Direct materials inventory 1.5.17 3000 Finished goods inventory 31.5.17 6000 Plant repairs
and maintenance 3400 Plant utilities 5600 Direct material purchases 7000 Work in progress
inventory 31.5.17 4000 Fire insurance plant 800 Indirect materials used 1000 General
administrative costs 3000 Depreciation plant building 2000 Work in progress inventory 1.5.17
500 Finished goods inventory 1.5.17 2000 Direct materials inventory 31.5.17 1000 Indirect
manufacturing labour 1200 Plant supervision 4000 Miscellaneous plant overhead 1000
Solution
Above is the Cost sheet , Cost of Production is manufacturing cost for the month of May-
2017Calaculation of cost of goods manufactured in the month of May-2017ParticularsAmount
($)Amount ($)Direct Materials$ 9,000.00Direct material purchases$ 7,000.00ADD- Opening
Direct materials inventory$ 3,000.00LESS- Closing Direct materials
inventory$(1,000.00)Direct Labour$ 5,000.00Prime cost$ 14,000.00Factory Over heads$
22,000.00Depreciation plant and equipment$ 3,000.00Depreciation plant building$
2,000.00Plant repairs and maintenance$ 3,400.00Fire insurance plant$ 800.00Indirect
materials used$ 1,000.00Indirect manufacturing labour$ 1,200.00Plant utilities$
5,600.00Miscellaneous plant overhead$ 1,000.00Plant supervision$ 4,000.00Factory Cost$
36,000.00Work in progress inventory$ (3,500.00)ADD- Opening Work in progress
inventory$ 500.00LESS- Closing Work in progress inventory$(4,000.00)Finished goods$
(4,000.00)ADD- Opening Finished goods inventory$ 2,000.00LESS- Closing Finished goods
inventory$(6,000.00)Cost of Production$ 28,500.00Cost of goods sold$ 28,500.00.
BRCC BIOL 121 FINAL SPRING 20151. E coli is a shortened name for.docx
BRCC BIOL 121 FINAL SPRING 2015
1. E coli is a shortened name for a bacterium that lives in our gut. According to the rules of binomial nomenclature it is properly written as _______________.
a. Escherichia COLI
b. Escherichia Coli
c. Escherichia coli
d. escherichia coli
e. escherichia coli
2. What does the term “biodiversity” refer to in the field of biology?
a. Total number of species on earth
b. Genetic variation that exists within populations all of the earth’s species
c. Total number of Earth’s ecosystems
d. All of the above are correct
3. Prokaryotic cells are classified in Domain(s) _______
a. Archaea
b. Bacteria
c. Eukarya
d. Archaea and Bacteria
e. Archaea, Bacteria and Eukarya
4. (
4. The shape of this bacterium is __________ and the attachment filaments radiating out are called_________
a
. bacillus…………. flagella
b
. coccus……………cilia
c.
spirilla
…………..
pili
d
. bacillus………… pili
e
. vibrio…………….cilia
)
5. A certain bacterium can withstand heating, drying and toxic chemicals that would kill most other bacteria. This indicates that it is probably able to form a __________
a. Pseudopodia
b. Conjugation tube
c. Endospore
d. Flagellum
e. Endotoxins
(
6.What
ecological role is played by cyanobacteria ?
a. photosynthetic
producers that make sugar and pump oxygen into the atmosphere
b
. decomposers of dead leaves and dead animals
c. chemosynthetic
producers
d
pathogens of plants and animals
e. predators
of other bacteria
)
6.
7. The term phytoplankton applies to photosynthetic, microscopic floating organisms such as________
a. Protozoan ciliates and flagellates
b. Aquatic plants
c. Dinoflagellates, diatoms and some unicellular or colonial green algae
d. Macroalgae and seaweeds
e. Fungus like protists such as slime molds
8. Which of the following statements is false?
a. Most protists are aquatic.
b. Protists are eukaryotes.
c. Most protists are unicellular.
d. Protists have more complex cells than prokaryotes.
e. Photosynthetic protists are called protozoa.
9. (
9. Which of the following structures is used by amoebas to move and to eat?
a. microvilli
b. cilia
c. flagella
d. pseudopodia
e. tendrils
)
10. Into what kingdom do we place multicellular heterotrophic eukaryotes that acquire food by absorption from the environment and have cell walls made of chitin?
a. Plantae
b. Animalia
c. Protista
d. Fungi
e. Proteobacteria
11. (
11.
(See image to the left)
A
fungus surrounding a root
absorbs food from the plant
and in turn this fungus
provides water and minerals to the plant. This is a _________ relationship?
a
. parasitic
b
.
commensalistic
c
.
predatorial
d
. mutualistic
e
. competitive
)
12. (See image above). A fungus growing together with a plant root in a way that benefits both is
a(n)_______
a. Lichen
b. Epiphyte
c. Mycorrhizae
d. Hemiparasite
e. Halophyte
13. Which group shares the most recent common ancestor with land plants?
a. Fungi
b. Cyanobacteria
c. Brown algae
d. Green a ...
Biology m3 movement of matls thru the cell membrane
This document provides an overview of module 3 from an alternative secondary education biology course on the movement of materials through the cell membrane. The module contains 3 lessons that discuss cellular exchange with the environment, different types of transport (passive vs. active), and how discoveries on cellular structures and functions have led to useful technologies. Students are expected to learn about diffusion, osmosis, active and passive transport, and how cellular processes are applied to food production and health. The module instructs students to complete reading, activities, and tests to achieve the learning objectives.
BRCC BIOL 121 FINAL .docx
BRCC BIOL 121 FINAL SPRING 2015
1. E coli is a shortened name for a bacterium that lives in our gut. According to the rules of binomial nomenclature it is properly written as _______________.
a. Escherichia COLI
b. Escherichia Coli
c. Escherichia coli
d. escherichia coli
e. escherichia coli
2. What does the term “biodiversity” refer to in the field of biology?
a. Total number of species on earth
b. Genetic variation that exists within populations all of the earth’s species
c. Total number of Earth’s ecosystems
d. All of the above are correct
3. Prokaryotic cells are classified in Domain(s) _______
a. Archaea
b. Bacteria
c. Eukarya
d. Archaea and Bacteria
e. Archaea, Bacteria and Eukarya
4.
4. The shape of this bacterium is __________ and the attachment filaments radiating out are called_________
a. bacillus…………. flagella
b. coccus……………cilia
c. spirilla…………..pili
d. bacillus………… pili
e. vibrio…………….cilia
5. A certain bacterium can withstand heating, drying and toxic chemicals that would kill most other bacteria. This indicates that it is probably able to form a __________
a. Pseudopodia
b. Conjugation tube
c. Endospore
d. Flagellum
e. Endotoxins
6.What ecological role is played by cyanobacteria ?
a. photosynthetic producers that make sugar and pump oxygen into the atmosphere
b. decomposers of dead leaves and dead animals
c. chemosynthetic producers
d pathogens of plants and animals
e. predators of other bacteria
6.
7. The term phytoplankton applies to photosynthetic, microscopic floating organisms such as________
a. Protozoan ciliates and flagellates
b. Aquatic plants
c. Dinoflagellates, diatoms and some unicellular or colonial green algae
d. Macroalgae and seaweeds
e. Fungus like protists such as slime molds
8. Which of the following statements is false?
a. Most protists are aquatic.
b. Protists are eukaryotes.
c. Most protists are unicellular.
d. Protists have more complex cells than prokaryotes.
e. Photosynthetic protists are called protozoa.
9.
9. Which of the following structures is used by amoebas to move and to eat?
a. microvilli
b. cilia
c. flagella
d. pseudopodia
e. tendrils
10. Into what kingdom do we place multicellular heterotrophic eukaryotes that acquire food by absorption from the environment and have cell walls made of chitin?
a. Plantae
b. Animalia
c. Protista
d. Fungi
e. Proteobacteria
11.
11. (See image to the left) A fungus surrounding a root absorbs food from the plant and in turn this fungus provides water and minerals to the plant. This is a _________ relationship?
a. parasitic
b. commensalistic
c. predatorial
d. mutualistic
e. competitive
12. (See image above). A fungus growing together with a plant root in a way that benefits both is
a(n)_______
a. Lichen
b. Epiphyte
c. Mycorrhizae
d. Hemiparasite
e. Halophyte
13. Which group shares the most recent common ancestor with land plants?
a. Fungi
b. Cy ...
Transport Across Cell Membranes
The document discusses transport across cell membranes. It begins by describing the structure and function of cell membranes, including their semipermeable nature. It then explains various transport mechanisms like diffusion, osmosis, facilitated diffusion, active transport, and endocytosis/exocytosis that allow materials to move across membranes. Specific examples are given of how these transport mechanisms function in cells, lungs, and other organisms and systems to maintain homeostasis.
Module cell structure and function
This module will help you gain knowledge about cell: the basic unit of all living matter. It is the unit of structure and function of which all plants and animals are composed. The cell is the smallest unit in the living organism that is capable of integrating the essential life processes. The cell is the key to biology because it is at this level that life truly springs. As you read this, you will learn more about the activities of the cell, the structures and the material of life that fills them. Later on, you will discover what a living matter is made of.
Unit 11. Invertebrates
This document provides an overview of invertebrate classification and examples. It discusses the main groups of invertebrates including porifera, cnidaria, worms, molluscs, arthropods, and echinoderms. Key details provided include characteristics of each group, examples of animals within each group, and how they reproduce and breathe. Activities at the end test comprehension of the content through matching, ordering, true/false, and drawing exercises.
Aipmt 2007
This document contains a biology exam with 44 multiple choice questions covering topics like biological organization, elements that make up living organisms, cell structures, plant and animal classification, evolution, and plant physiology. The questions test fundamental concepts in these subject areas and each question is followed by the correct multiple choice answer.
1. Members of one species cannot successfully interbreed and produc.docx
1. Members of one species cannot successfully interbreed and produce fertile offspring with members of other species. This idea is known as
a. reproductive success.
b. punctuated evolution.
c. adaptive radiation.
d. the biological species concept.
e. geographic isolation.
2. The origin of new species, the extinction of species, and the evolution of major new features of living things are all changes that result from
a. macroevolution.
b. fitness.
c. speciation.
d. the biological species concept.
e. convergent evolution.
3. Which is a barrier that can contribute to reproductive isolation?
a. timing
b. behavior
c. habitat
d. incompatible reproductive structures
e. all of the above
4. Which of the following statements is false?
a. Horses and donkeys are separate species.
b. Two mules can mate and produce fertile offspring.
c. A horse and a donkey can mate and produce offspring.
d. Two donkeys can mate and produce fertile offspring.
e. Two horses can mate and produce fertile offspring.
5. The evolution of the penguin’s wing from a wing suited for flying to a “flipper-wing” used for swimming is an example of
a. refinement of existing adaptations.
b. reproductive isolation.
c. adaptation of existing structures to new functions.
d. inheritance of acquired characteristics.
e. the biological species concept.
6. Which of the following have been preserved as fossils?
a. dinosaur footprints
b. insects preserved in amber
c. petrified plant remains
d. animal bones
e. all of the above
7. The mass extinctions that included the dinosaurs took place during which period?
a. Cambrian (543–510 million years ago)
b. Devonian (409–363 million years ago)
c. Carboniferous (363–290 million years ago)
d. Jurassic (206–144 million years ago)
e. Cretaceous (144–65 million years ago)
8. The development of the complex, camera-like eye of a mammal is an example of
a. refinement of existing adaptations.
b. reproductive isolation.
c. adaptation of existing structures to new functions.
d. inheritance of acquired characteristics.
e. the biological species concept.
9. Which of the following statements is true?
a. Carbon-14 dating is useful for studying the age of early dinosaur fossils.
b. Carbon-14 has a half-life of 5,730 years.
c. Uranium-238 has a very short half-life.
d. Uranium-238 is present in all organisms.
e. Carbon-12 is not found in living plants.
10. Which of the following provides the best explanation for why Australia has so many organisms unique to that continent?
a. punctuated equilibrium
b. the biological species concept
c. convergent evolution
d. continental drift
e. cladistics
11. Scientists think that a meteor that fell in ____________________ may have led to the extinction of the dinosaurs.
a. Australia
b. the Yucatán peninsula
c. The Galápagos Islands
d. Pangaea
e. India
12. The great diversit.
Ninth class biology mcqs (the cell)
This document contains 50 multiple choice questions about biology and cell structure. The questions cover topics like the discovery of cells, components of plant and animal cells, cell organelles and their functions, cell membrane structure and function, mitosis and meiosis. An answer key is provided at the end of the document with the correct response for each question numbered 1-50.
Cell (by anshul)
The document summarizes key aspects of cell biology. It defines the cell as the basic structural and functional unit of life. It describes some of the major discoveries in cell theory and outlines the basic structures of plant and animal cells, including the cell membrane, cytoplasm, nucleus, mitochondria, chloroplasts, and other organelles. It also discusses cell size, types of cells (prokaryotic vs. eukaryotic), and methods of transport across the cell membrane.
8- Which of the following statements are FALSE about the phylum Chorda.pdf
8. Which of the following statements are FALSE about the phylum Chordata. a. All chordates
have a postanal tal at some stage in life. b. All chordates have pharyngeal slits that wit develop
into ancther structure. c. In all chordates, the notochord is replaced by the soinal column during
development. e. Both B and C are FALISE 9. Deuterostomes exhibit. a. Radial cleavage b. The
blastopore becomes an anus c. Diploblastic germ layers d. Both A and B e. A , B , and C are all
correct 10. Damage to its flagellum would prevent a choanocyte from a. circulating water
through the sponge. b. stinging and capturing prey. c. secreting spongin to form the spenge body.
d. producing the supportive spicules. 11. How could a biologist distingaish an acoelomate
flatworm from a free-living nematode? a. The acoelomate worm would be solid throughout since
it lacks a true gut: b. The acoelomate worm would havo a nervous system. c. The nematode
would have a more primitive gut and nervous system. d) Only the acoelomate is triploblastic. 12.
Linnaeus lumped all of the worm-like animals into the category Vermes (Vermis is Latin for
worm). is this a vald classification scheme? a. No, because some worms are protists: b. Yes,
because all worms are members of the same kingdom and phylum. c. Yes, because all worm-like
animals are more closely related to each other than they are to other animals due to the
evolutionary history of this body plan. d. No, because the worm-like body plan has appeared
many times through evolutionary history and is not a useful trait for classification. 13. Which of
the following terms is mismutched with its meaning or characteristics? a. Diploblastic-ectoderm
and mesoderm b. Triploblastic-ectoderm, mesoderm, and endoderm c. Porifera-lacks symmetry
no tissues d. Chordate-an animal with notochord 14. The most diverse of the four eukaryotic
kingdoms is the: a. Protista Kingdom. b. Bacteria Kingdom. c. Plantae Kingdom. d. Animalia
kingdom. 15. Of the folowing features, which is the most widely shared in the animal kingdom?
a. protortome development b. radial cleavare c. inolring of a cuticle or exoskieleton d. a bady
gian with.iymmetry e. a triploblastic embryo.
Cell types and cell cycle.pptx
This document provides an overview of cell types and tissues in the human body. It begins by defining key anatomical terms and then discusses the following:
1. Cell classifications including prokaryotic and eukaryotic cells, somatic and reproductive cells, and diploid and haploid cells.
2. The levels of organization from cells to tissues to organs.
3. The four main tissue types - epithelial, connective, muscular and nervous tissue. Under each tissue type it describes the subtypes and functions.
4. It provides examples of key cell structures and components and diagrams illustrating tissue types.
5. It concludes with a quiz to test understanding of the content.
Intoranimal lecture 8
Animal are multicellular, heterotrophic eukaryotes that exhibit several key characteristics. They are heterotrophs, undergo sexual reproduction with diploid dominance, are multicellular eukaryotes that lack cell walls, and possess unique tissues like nervous and muscle. Their bodies are made of cells grouped into tissues that carry out specialized functions. Early development involves cleavage of the zygote followed by formation of a blastula and then gastrulation to form germ layers.
Anatomy
This document discusses the classification of metazoan animals based on their anatomy and embryonic development. It describes how animals can be divided into three main groups: acoelomates without a body cavity, pseudocoelomates with only remnants of a blastocoel cavity, and coelomates with a true body cavity called a coelom. Within coelomates, animals are further divided into protostomes and deuterostomes based on differences in their early embryonic development. The classification systems discussed provide insights into evolutionary relationships among metazoan phyla.
Biology unit 2 cells exam everything you need to know and extra review questions
This biology exam review covers many topics about cell structure and function. It includes 50 multiple choice questions about cell theory, hydrolysis and dehydration synthesis reactions, organelle structure and function, membrane transport mechanisms, and osmotic environments. Students are provided definitions and diagrams to learn the key parts of prokaryotic and eukaryotic cells, plant and animal cells, endosymbiotic theory, and organelle functions. Membrane transport mechanisms like diffusion, osmosis, facilitated diffusion, and active transport are also defined.
What is -budgetary slack-- It is the process whereby upper management.pdf
What is "budgetary slack"? It is the process whereby upper management underestimates
budgeted revenues or overestimates budgeted expenses in order to motivate lower management.
It is the amount that actual results vary from budgeted projections as reported at the end of the
budget period. It is the tolerance that is built into budgets to recognize that actual results will not
match budgeted projections exactly. It is the process where managers intentionally underestimate
budgeted revenues or overestimate budgeted expenses in order to make it easier to achieve
budgetary goals..
Which of the following does NOT contribute to the mobility of the pect.pdf
Which of the following does NOT contribute to the mobility of the pectoral girdle and arm
a. most of the connections between the scapulae anf the axial skeletons are through muscles
b. the head of the humerus articulates with a shallow glenoid fossa
c. the only bony connection of the pectoral girdle and the axial skeleton is through the clavicle
d. the scapula and humerus are fused together.
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kINGDOM ANIMALIA
1. The document summarizes the nine major phyla of the animal kingdom - Porifera, Coelenterata, Platyhelminthes, Nematoda, Annelida, Arthropoda, Mollusca, Echinodermata, and Chordata.
2. It provides details on the defining characteristics of each phylum, including their habitat, body structure, digestive system, symmetry, and any specialized structures or cells.
3. The major animal groups that define each phylum are mentioned, such as sponges, jellyfish, flatworms, roundworms, earthworms, insects, mollusks, starfish and sea urchins, and
Important questions of biology class 9th
This document discusses several topics related to cell biology:
- A cell will swell if placed in a solution with a lower concentration of water molecules outside the cell than inside, due to osmosis.
- The endoplasmic reticulum transports materials within the cell but does not generate energy.
- Plasmolysis is the shrinkage of a cell placed in a hypertonic solution due to more water leaving the cell than entering.
- Lysosomes are called the "suicide bags" of the cell because their digestive enzymes can digest the entire cell under some conditions.
Core biology 2 study guide for lecture exam 3
This study guide covers topics in animal diversity, invertebrates, vertebrates, and fungi. For animal diversity, it defines characteristics that distinguish animals, types of symmetry, and coelomic conditions. It describes the four classes of Cnidaria and characteristics of Nemertea. It also covers advantages and disadvantages of exoskeletons. For invertebrates, it defines lophophores and lists lophophorate phyla. For vertebrates, it defines key terms like craniates and describes adaptations of reptiles and birds. Finally, for fungi, it covers characteristics, modes of nutrition, dispersal without motility, body structures, and sexual/asexual reproduction among major ph
QUIZ-EUKARYOTES.pptx lectern note quick quiz
The document is a quiz about the origin and evolution of eukaryotes. It asks multiple choice questions about key aspects of endosymbiotic theory such as mitochondria and chloroplasts evolving from bacteria, when the first eukaryotic cells appeared, and the defining features of eukaryotic cells. The questions also cover the primary functions of organelles in eukaryotic cells like the nucleus, mitochondria, chloroplasts, and vacuoles.
The significance of a notochord in the evolution of chordates is that.pdf
The Ruritanian Chemical Company shows the following account balances for the month of May
2017 in Ruritanian dollars (R$). Calculate the cost of goods manufactured for May 2017. Also,
prepare an income statement for May 2017. R$ Customer service cost 800 Direct manufacturing
labour 5000 Depreciation plant and equipment 3000 Revenue 51000 Marketing and advertising
1800 Direct materials inventory 1.5.17 3000 Finished goods inventory 31.5.17 6000 Plant repairs
and maintenance 3400 Plant utilities 5600 Direct material purchases 7000 Work in progress
inventory 31.5.17 4000 Fire insurance plant 800 Indirect materials used 1000 General
administrative costs 3000 Depreciation plant building 2000 Work in progress inventory 1.5.17
500 Finished goods inventory 1.5.17 2000 Direct materials inventory 31.5.17 1000 Indirect
manufacturing labour 1200 Plant supervision 4000 Miscellaneous plant overhead 1000
Solution
Above is the Cost sheet , Cost of Production is manufacturing cost for the month of May-
2017Calaculation of cost of goods manufactured in the month of May-2017ParticularsAmount
($)Amount ($)Direct Materials$ 9,000.00Direct material purchases$ 7,000.00ADD- Opening
Direct materials inventory$ 3,000.00LESS- Closing Direct materials
inventory$(1,000.00)Direct Labour$ 5,000.00Prime cost$ 14,000.00Factory Over heads$
22,000.00Depreciation plant and equipment$ 3,000.00Depreciation plant building$
2,000.00Plant repairs and maintenance$ 3,400.00Fire insurance plant$ 800.00Indirect
materials used$ 1,000.00Indirect manufacturing labour$ 1,200.00Plant utilities$
5,600.00Miscellaneous plant overhead$ 1,000.00Plant supervision$ 4,000.00Factory Cost$
36,000.00Work in progress inventory$ (3,500.00)ADD- Opening Work in progress
inventory$ 500.00LESS- Closing Work in progress inventory$(4,000.00)Finished goods$
(4,000.00)ADD- Opening Finished goods inventory$ 2,000.00LESS- Closing Finished goods
inventory$(6,000.00)Cost of Production$ 28,500.00Cost of goods sold$ 28,500.00.
BRCC BIOL 121 FINAL SPRING 20151. E coli is a shortened name for.docx
BRCC BIOL 121 FINAL SPRING 2015
1. E coli is a shortened name for a bacterium that lives in our gut. According to the rules of binomial nomenclature it is properly written as _______________.
a. Escherichia COLI
b. Escherichia Coli
c. Escherichia coli
d. escherichia coli
e. escherichia coli
2. What does the term “biodiversity” refer to in the field of biology?
a. Total number of species on earth
b. Genetic variation that exists within populations all of the earth’s species
c. Total number of Earth’s ecosystems
d. All of the above are correct
3. Prokaryotic cells are classified in Domain(s) _______
a. Archaea
b. Bacteria
c. Eukarya
d. Archaea and Bacteria
e. Archaea, Bacteria and Eukarya
4. (
4. The shape of this bacterium is __________ and the attachment filaments radiating out are called_________
a
. bacillus…………. flagella
b
. coccus……………cilia
c.
spirilla
…………..
pili
d
. bacillus………… pili
e
. vibrio…………….cilia
)
5. A certain bacterium can withstand heating, drying and toxic chemicals that would kill most other bacteria. This indicates that it is probably able to form a __________
a. Pseudopodia
b. Conjugation tube
c. Endospore
d. Flagellum
e. Endotoxins
(
6.What
ecological role is played by cyanobacteria ?
a. photosynthetic
producers that make sugar and pump oxygen into the atmosphere
b
. decomposers of dead leaves and dead animals
c. chemosynthetic
producers
d
pathogens of plants and animals
e. predators
of other bacteria
)
6.
7. The term phytoplankton applies to photosynthetic, microscopic floating organisms such as________
a. Protozoan ciliates and flagellates
b. Aquatic plants
c. Dinoflagellates, diatoms and some unicellular or colonial green algae
d. Macroalgae and seaweeds
e. Fungus like protists such as slime molds
8. Which of the following statements is false?
a. Most protists are aquatic.
b. Protists are eukaryotes.
c. Most protists are unicellular.
d. Protists have more complex cells than prokaryotes.
e. Photosynthetic protists are called protozoa.
9. (
9. Which of the following structures is used by amoebas to move and to eat?
a. microvilli
b. cilia
c. flagella
d. pseudopodia
e. tendrils
)
10. Into what kingdom do we place multicellular heterotrophic eukaryotes that acquire food by absorption from the environment and have cell walls made of chitin?
a. Plantae
b. Animalia
c. Protista
d. Fungi
e. Proteobacteria
11. (
11.
(See image to the left)
A
fungus surrounding a root
absorbs food from the plant
and in turn this fungus
provides water and minerals to the plant. This is a _________ relationship?
a
. parasitic
b
.
commensalistic
c
.
predatorial
d
. mutualistic
e
. competitive
)
12. (See image above). A fungus growing together with a plant root in a way that benefits both is
a(n)_______
a. Lichen
b. Epiphyte
c. Mycorrhizae
d. Hemiparasite
e. Halophyte
13. Which group shares the most recent common ancestor with land plants?
a. Fungi
b. Cyanobacteria
c. Brown algae
d. Green a ...
Biology m3 movement of matls thru the cell membrane
This document provides an overview of module 3 from an alternative secondary education biology course on the movement of materials through the cell membrane. The module contains 3 lessons that discuss cellular exchange with the environment, different types of transport (passive vs. active), and how discoveries on cellular structures and functions have led to useful technologies. Students are expected to learn about diffusion, osmosis, active and passive transport, and how cellular processes are applied to food production and health. The module instructs students to complete reading, activities, and tests to achieve the learning objectives.
BRCC BIOL 121 FINAL .docx
BRCC BIOL 121 FINAL SPRING 2015
1. E coli is a shortened name for a bacterium that lives in our gut. According to the rules of binomial nomenclature it is properly written as _______________.
a. Escherichia COLI
b. Escherichia Coli
c. Escherichia coli
d. escherichia coli
e. escherichia coli
2. What does the term “biodiversity” refer to in the field of biology?
a. Total number of species on earth
b. Genetic variation that exists within populations all of the earth’s species
c. Total number of Earth’s ecosystems
d. All of the above are correct
3. Prokaryotic cells are classified in Domain(s) _______
a. Archaea
b. Bacteria
c. Eukarya
d. Archaea and Bacteria
e. Archaea, Bacteria and Eukarya
4.
4. The shape of this bacterium is __________ and the attachment filaments radiating out are called_________
a. bacillus…………. flagella
b. coccus……………cilia
c. spirilla…………..pili
d. bacillus………… pili
e. vibrio…………….cilia
5. A certain bacterium can withstand heating, drying and toxic chemicals that would kill most other bacteria. This indicates that it is probably able to form a __________
a. Pseudopodia
b. Conjugation tube
c. Endospore
d. Flagellum
e. Endotoxins
6.What ecological role is played by cyanobacteria ?
a. photosynthetic producers that make sugar and pump oxygen into the atmosphere
b. decomposers of dead leaves and dead animals
c. chemosynthetic producers
d pathogens of plants and animals
e. predators of other bacteria
6.
7. The term phytoplankton applies to photosynthetic, microscopic floating organisms such as________
a. Protozoan ciliates and flagellates
b. Aquatic plants
c. Dinoflagellates, diatoms and some unicellular or colonial green algae
d. Macroalgae and seaweeds
e. Fungus like protists such as slime molds
8. Which of the following statements is false?
a. Most protists are aquatic.
b. Protists are eukaryotes.
c. Most protists are unicellular.
d. Protists have more complex cells than prokaryotes.
e. Photosynthetic protists are called protozoa.
9.
9. Which of the following structures is used by amoebas to move and to eat?
a. microvilli
b. cilia
c. flagella
d. pseudopodia
e. tendrils
10. Into what kingdom do we place multicellular heterotrophic eukaryotes that acquire food by absorption from the environment and have cell walls made of chitin?
a. Plantae
b. Animalia
c. Protista
d. Fungi
e. Proteobacteria
11.
11. (See image to the left) A fungus surrounding a root absorbs food from the plant and in turn this fungus provides water and minerals to the plant. This is a _________ relationship?
a. parasitic
b. commensalistic
c. predatorial
d. mutualistic
e. competitive
12. (See image above). A fungus growing together with a plant root in a way that benefits both is
a(n)_______
a. Lichen
b. Epiphyte
c. Mycorrhizae
d. Hemiparasite
e. Halophyte
13. Which group shares the most recent common ancestor with land plants?
a. Fungi
b. Cy ...
Transport Across Cell Membranes
The document discusses transport across cell membranes. It begins by describing the structure and function of cell membranes, including their semipermeable nature. It then explains various transport mechanisms like diffusion, osmosis, facilitated diffusion, active transport, and endocytosis/exocytosis that allow materials to move across membranes. Specific examples are given of how these transport mechanisms function in cells, lungs, and other organisms and systems to maintain homeostasis.
Module cell structure and function
This module will help you gain knowledge about cell: the basic unit of all living matter. It is the unit of structure and function of which all plants and animals are composed. The cell is the smallest unit in the living organism that is capable of integrating the essential life processes. The cell is the key to biology because it is at this level that life truly springs. As you read this, you will learn more about the activities of the cell, the structures and the material of life that fills them. Later on, you will discover what a living matter is made of.
Unit 11. Invertebrates
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Aipmt 2007
This document contains a biology exam with 44 multiple choice questions covering topics like biological organization, elements that make up living organisms, cell structures, plant and animal classification, evolution, and plant physiology. The questions test fundamental concepts in these subject areas and each question is followed by the correct multiple choice answer.
1. Members of one species cannot successfully interbreed and produc.docx
1. Members of one species cannot successfully interbreed and produce fertile offspring with members of other species. This idea is known as
a. reproductive success.
b. punctuated evolution.
c. adaptive radiation.
d. the biological species concept.
e. geographic isolation.
2. The origin of new species, the extinction of species, and the evolution of major new features of living things are all changes that result from
a. macroevolution.
b. fitness.
c. speciation.
d. the biological species concept.
e. convergent evolution.
3. Which is a barrier that can contribute to reproductive isolation?
a. timing
b. behavior
c. habitat
d. incompatible reproductive structures
e. all of the above
4. Which of the following statements is false?
a. Horses and donkeys are separate species.
b. Two mules can mate and produce fertile offspring.
c. A horse and a donkey can mate and produce offspring.
d. Two donkeys can mate and produce fertile offspring.
e. Two horses can mate and produce fertile offspring.
5. The evolution of the penguin’s wing from a wing suited for flying to a “flipper-wing” used for swimming is an example of
a. refinement of existing adaptations.
b. reproductive isolation.
c. adaptation of existing structures to new functions.
d. inheritance of acquired characteristics.
e. the biological species concept.
6. Which of the following have been preserved as fossils?
a. dinosaur footprints
b. insects preserved in amber
c. petrified plant remains
d. animal bones
e. all of the above
7. The mass extinctions that included the dinosaurs took place during which period?
a. Cambrian (543–510 million years ago)
b. Devonian (409–363 million years ago)
c. Carboniferous (363–290 million years ago)
d. Jurassic (206–144 million years ago)
e. Cretaceous (144–65 million years ago)
8. The development of the complex, camera-like eye of a mammal is an example of
a. refinement of existing adaptations.
b. reproductive isolation.
c. adaptation of existing structures to new functions.
d. inheritance of acquired characteristics.
e. the biological species concept.
9. Which of the following statements is true?
a. Carbon-14 dating is useful for studying the age of early dinosaur fossils.
b. Carbon-14 has a half-life of 5,730 years.
c. Uranium-238 has a very short half-life.
d. Uranium-238 is present in all organisms.
e. Carbon-12 is not found in living plants.
10. Which of the following provides the best explanation for why Australia has so many organisms unique to that continent?
a. punctuated equilibrium
b. the biological species concept
c. convergent evolution
d. continental drift
e. cladistics
11. Scientists think that a meteor that fell in ____________________ may have led to the extinction of the dinosaurs.
a. Australia
b. the Yucatán peninsula
c. The Galápagos Islands
d. Pangaea
e. India
12. The great diversit.
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Cell (by anshul)
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8- Which of the following statements are FALSE about the phylum Chorda.pdf
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have a postanal tal at some stage in life. b. All chordates have pharyngeal slits that wit develop
into ancther structure. c. In all chordates, the notochord is replaced by the soinal column during
development. e. Both B and C are FALISE 9. Deuterostomes exhibit. a. Radial cleavage b. The
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would have a more primitive gut and nervous system. d) Only the acoelomate is triploblastic. 12.
Linnaeus lumped all of the worm-like animals into the category Vermes (Vermis is Latin for
worm). is this a vald classification scheme? a. No, because some worms are protists: b. Yes,
because all worms are members of the same kingdom and phylum. c. Yes, because all worm-like
animals are more closely related to each other than they are to other animals due to the
evolutionary history of this body plan. d. No, because the worm-like body plan has appeared
many times through evolutionary history and is not a useful trait for classification. 13. Which of
the following terms is mismutched with its meaning or characteristics? a. Diploblastic-ectoderm
and mesoderm b. Triploblastic-ectoderm, mesoderm, and endoderm c. Porifera-lacks symmetry
no tissues d. Chordate-an animal with notochord 14. The most diverse of the four eukaryotic
kingdoms is the: a. Protista Kingdom. b. Bacteria Kingdom. c. Plantae Kingdom. d. Animalia
kingdom. 15. Of the folowing features, which is the most widely shared in the animal kingdom?
a. protortome development b. radial cleavare c. inolring of a cuticle or exoskieleton d. a bady
gian with.iymmetry e. a triploblastic embryo.
Cell types and cell cycle.pptx
This document provides an overview of cell types and tissues in the human body. It begins by defining key anatomical terms and then discusses the following:
1. Cell classifications including prokaryotic and eukaryotic cells, somatic and reproductive cells, and diploid and haploid cells.
2. The levels of organization from cells to tissues to organs.
3. The four main tissue types - epithelial, connective, muscular and nervous tissue. Under each tissue type it describes the subtypes and functions.
4. It provides examples of key cell structures and components and diagrams illustrating tissue types.
5. It concludes with a quiz to test understanding of the content.
Intoranimal lecture 8
Animal are multicellular, heterotrophic eukaryotes that exhibit several key characteristics. They are heterotrophs, undergo sexual reproduction with diploid dominance, are multicellular eukaryotes that lack cell walls, and possess unique tissues like nervous and muscle. Their bodies are made of cells grouped into tissues that carry out specialized functions. Early development involves cleavage of the zygote followed by formation of a blastula and then gastrulation to form germ layers.
Anatomy
This document discusses the classification of metazoan animals based on their anatomy and embryonic development. It describes how animals can be divided into three main groups: acoelomates without a body cavity, pseudocoelomates with only remnants of a blastocoel cavity, and coelomates with a true body cavity called a coelom. Within coelomates, animals are further divided into protostomes and deuterostomes based on differences in their early embryonic development. The classification systems discussed provide insights into evolutionary relationships among metazoan phyla.
Biology unit 2 cells exam everything you need to know and extra review questions
This biology exam review covers many topics about cell structure and function. It includes 50 multiple choice questions about cell theory, hydrolysis and dehydration synthesis reactions, organelle structure and function, membrane transport mechanisms, and osmotic environments. Students are provided definitions and diagrams to learn the key parts of prokaryotic and eukaryotic cells, plant and animal cells, endosymbiotic theory, and organelle functions. Membrane transport mechanisms like diffusion, osmosis, facilitated diffusion, and active transport are also defined.
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