SCIENCE-QUIZ-BEE.pptx

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The document is a science quiz bee containing multiple choice questions about various topics in biology, chemistry, and genetics. The questions cover human anatomy like the respiratory system and heart, cellular processes like cellular respiration and DNA, genetics concepts like inheritance of traits, chemical bonding like ionic compounds, and more. The quiz tests fundamental knowledge across several science disciplines.

Education

Which statement
best describes the
human respiratory
system?
A. It is composed of a network of moist
passageways that permit air to flow from the
external environment to the lungs.
B. Each cell of the human body is in direct contact
with the external environment, and gas exchange
occurs by diffusion
C. The external body surface is kept moist to
allow for gas exchange.
D. Gases diffuse across membranes on both the
external and internal surfaces of the body.

The human trachea
is prevented from
collapsing by the
presence of
A. mucous membranes
B. cartilaginous rings
C. muscle fibers
D. bony networks

Deposits from cigarette
smoke are most likely to
interfere with the ciliated
mucous membranes
locatedinboththe
A.trachea and esophagus
B. alveoli and liver
C. nasal cavity and trachea
D. epiglottis and esophagus

Scientists call an
organism that has
two different
alleles for a trait a
A. Hybrid
B. Trait
C. Purebred
D. Factor

Which organic compounds are
needed for the synthesis of the
plasma membrane, contain a
large amount of stored energy, and
have been linked to cardiovascular
diseases?
A.Complex
carbohydrates
B. saturated fats
C. simple sugars
D. polyunsaturated fats

The failure to
regulate the pH of
the blood can
affect the activity
of
A.enzymes that clot blood
B. red blood cells that make antibodies
C. chlorophyll that carries oxygen in
the blood
D. DNA that controls starch digestion
in the blood

Which is the largest chamber in
the heart?

These contain the good and
bad characteristics of an
individual.

It describes how traits are passed
on from parents to children.

It is the process involving in the
union of a sperm and an egg.

What is the
advantage of
sexual
reproduction?
a.can reproduce by bringing
specialized gametes together
b.can reproduce without bringing
specialized gametes together
c.provides a large degree of
variation
d.produces a limited number of
offspring

If a heterozygous tall
plant (Tt) is crossed
with a homozygous
short plant (tt), how
many percent of the
offspring are
heterozygous tall?
a.25% c. 75%
b.50% d. 100%

If a plant that has
round seeds has
a parent that has
wrinkled seeds,
what is its
genotype?
(Assume that
round is
dominant.)
a.RR c. Rr
b.rr d. RrWw

The number of
electrons in the
highest energy
level of 20Ca is
A. 2 C. 4
 B. 5 D. 6

Which of the
following
statements best
describes a metal
and a nonmetal
during ionic bond?
a.Both metals and nonmetals lose
electrons during bond formation.
b.Both metals and nonmetals gain
electrons during bond formation.
c.Metals are electron donors while
nonmetals are electron acceptors.
d.Metals are electron acceptors while
nonmetals are electron donors.

Potassium (19K)
reacts with chlorine
(17Cl). What is the
correct formula for
the compound?
 a.KCl c. KCl2
 b. K2Cl d. KCl3

The element oxygen
has 6 valence
electrons and needs
to add _____
electrons to
complete its octet.
a. 2 electrons c. 6 electrons
b.4 electrons d. 5 electrons

When Na atom
loses one
electron, it gets a
charge of
______________
__.
a.-1 c. 0
b.+1 d. it has no charge

Which of the
following lists
contain no ionic
compound?
 a.HCN, NO, Ca(NO3) c. NaH, CaF2, NaNH2
 b. KOH, CCl4, SF6 d. CH2O, H2S, NH3

Ion X has a charge
of 3+, and ion Y has
a charge of 2-. What
is the correct formula
of the compound
formed?
 a. X3Y2 c. (XY)3
b. X2Y3 d. X2Y2

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QUESTION 1 Which ecological niche described below possesses the greatest number of prokaryotic cells (select one)? A. Oceanic and Terrestrial sub-surfaces B. In or on non-prokaryotic organisms (humans, animals and plants) C. Dry land D. Lakes, rivers and oceans E. Earth stratosphere 1 points Saved QUESTION 2 Which organism was primarily responsible for oxygenation of the earth approximately 2 billion years ago (select one)? A. cyanobacteria B. Wooly mammoths C. Green sulfur bacteria D. Thermophilic archaea E. algae 1 points Saved QUESTION 3 The earliest microorganisms were likely restricted to deep ocean and sub-surface ecological niches until which of the following (select one)? A. Ozone layer developed B. Aquatic life carried them to land C. Phototrophy evolved D. Chemolithotrophy developed E. The development of chemoorganotrophy 1 points Saved QUESTION 4 Two tubes are inoculated from one test tube of a bacterial culture. The cultures are then transferred every day for 2 months. All of the media and growth conditions are the same in every tube. After 2 months of cultivation, the fitness and genotype frequencies of the populations in the two tubes are compared. The fitness of the two cultures is the same, but the genotype frequencies are very different in the two cultures. How is this possible? A. This result is not possible because different genotype frequencies would result in different fitness levels under the same growth conditions. B. Genetic drift within the small populations in the test tubes resulted in different genotype frequencies. C. It is highly unlikely that any bacterial culture could be maintained for 2 months D. Natural selection caused the evolution of different genotype frequencies within the separate test tubes. E. Two months is not long enough for different fitness levels to evolve even if the genotype frequencies change. 1 points Saved QUESTION 5 If you allowed 20 identical parallel Listeria cultures to evolve for 20,000 generations under new growth conditions with very little nitrogen, the parallel cultures would do which of the following (select one)? A. Direct mutations to occur in nitrogen utilization and uptake genes in order to adapt rapidly to the culture conditions B. Each parallel culture would accumulate different random mutations resulting in different adaptations to use the nitrogen in the media. C. Evolve identical adaptations to use the nitrogen source provided in the media D. Not change or adapt significantly over this small number of generations E. Each culture would evolve to use arsenic in place of nitrogen 1 points Save Answer QUESTION 6 Which of the following statements are correct about the early formation of life on earth (select all that apply)? A. Lateral gene transfer is one plausible explanation as to why organisms in Archaea, Bacteria, and Eukarya still share so many genes among such distinct domains. B. The domains of life arose as barriers between gene exchange evolved between organisms C. W.

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MULTIPLE CHOICE 1. In science, a hypothesis must be A) a known fact B) testable C) derived from a theory D) able to be proven absolutely true 2. Which of the following includes all the others? A) population B) cell C) organism D) atom 3. A sodium atom has 11 protons, 12 neutrons, and 11 electrons. The atomic number of sodium isA) 11 B) 12 C) 23 D) 34 4. If you place the probe of a pH meter in an unknown liquid and it reads pH 10, the liquid is A) an acid B) neutral C) a base 5. A carbon atom of mass number 12 and a carbon atom of mass number 14 are A) covalent B) compounds C) isotopes D) ions 6. This polysaccharide forms fibers that are a major component of plant cell walls: A) glucose B) starch C) cellulose D) glycogen 7. Glycerol is a building block of A) starch B) enzymes C) vegetable oil D) DNA 8. Which of these types of molecules contain nitrogen? A) polysaccharides B) phospholipids C) proteins 9. Prokaryotic cells, with no nucleus or membranous organelles, are found in A) animals B) bacteria C) fungi D) plants 10. The main function of a ribosome is to A) extract energy from glucose B) synthesize glucose C) store food in the form of fat D) synthesize proteins 11. Mitochondria A) package proteins for secretion from cell B) contain chromosomes C) are sites of oxidation of glucose to generate ATP D) synthesize proteins 12. The plasma membrane consists of A) a single layer of phospholipid molecules B) a double layer of phospholipid molecules in which proteins are embedded C) several layers of protein and carbohydrate molecules D) a triple layer of phospholipids and carbohydrates 13. The movement of molecules from a region of low concentration across a membrane to a region of high concentration by use of ATP energy is A) active transport B)diffusion C) passive transport D) osmosis 14. The oxygen in our atmosphere is produced by A) greenhouse effect B) cellular respiration C) photosynthesis D) volcanic eruptions 15. Yeast cells break down glucose anaerobically into A) ethanol and CO2 B) lactic acid and CO2 C) lactic acid and H2O D) ethanol and H2O 16. The net energy gain from complete cellular respiration is A) 2 ATP B) 4 ATP C) 8 ATP D) 36-38 ATP 17. Carbon dioxide is released in A) the light-dependent phase of photosynthesis B) the Krebs cycle C) glycolysis D) the Calvin cycle 18. If the concentration of glucose in the water outside of a cell is higher than the concentration inside, A) water will tend to enter the cell by osmosisB) water will tend to leave the cell by osmosis C) glucose will tend to enter the cell by osmosis D) glucose will tend to leave the cell by osmosis 19. What happens if a red blood cell is placed in a hypotonic solution? A) the cel.

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SCIENCE-QUIZ-BEE.pptx

1. SCIENCE QUIZ BEE

2. 1st Round

3. Which statement best describes the human respiratory system? A. It is composed of a network of moist passageways that permit air to flow from the external environment to the lungs. B. Each cell of the human body is in direct contact with the external environment, and gas exchange occurs by diffusion C. The external body surface is kept moist to allow for gas exchange. D. Gases diffuse across membranes on both the external and internal surfaces of the body.

4. The human trachea is prevented from collapsing by the presence of A. mucous membranes B. cartilaginous rings C. muscle fibers D. bony networks

5. Deposits from cigarette smoke are most likely to interfere with the ciliated mucous membranes locatedinboththe A.trachea and esophagus B. alveoli and liver C. nasal cavity and trachea D. epiglottis and esophagus

6. Scientists call an organism that has two different alleles for a trait a A. Hybrid B. Trait C. Purebred D. Factor

7. Which organic compounds are needed for the synthesis of the plasma membrane, contain a large amount of stored energy, and have been linked to cardiovascular diseases? A.Complex carbohydrates B. saturated fats C. simple sugars D. polyunsaturated fats

8. The failure to regulate the pH of the blood can affect the activity of A.enzymes that clot blood B. red blood cells that make antibodies C. chlorophyll that carries oxygen in the blood D. DNA that controls starch digestion in the blood

9. Which is the largest chamber in the heart?

10. These contain the good and bad characteristics of an individual.

11. It describes how traits are passed on from parents to children.

12. It is the process involving in the union of a sperm and an egg.

13. What is the advantage of sexual reproduction? a.can reproduce by bringing specialized gametes together b.can reproduce without bringing specialized gametes together c.provides a large degree of variation d.produces a limited number of offspring

14. If a heterozygous tall plant (Tt) is crossed with a homozygous short plant (tt), how many percent of the offspring are heterozygous tall? a.25% c. 75% b.50% d. 100%

15. If a plant that has round seeds has a parent that has wrinkled seeds, what is its genotype? (Assume that round is dominant.) a.RR c. Rr b.rr d. RrWw

16. The number of electrons in the highest energy level of 20Ca is A. 2 C. 4  B. 5 D. 6

17. Which of the following statements best describes a metal and a nonmetal during ionic bond? a.Both metals and nonmetals lose electrons during bond formation. b.Both metals and nonmetals gain electrons during bond formation. c.Metals are electron donors while nonmetals are electron acceptors. d.Metals are electron acceptors while nonmetals are electron donors.

18. Potassium (19K) reacts with chlorine (17Cl). What is the correct formula for the compound?  a.KCl c. KCl2  b. K2Cl d. KCl3

19. The element oxygen has 6 valence electrons and needs to add _____ electrons to complete its octet. a. 2 electrons c. 6 electrons b.4 electrons d. 5 electrons

20. When Na atom loses one electron, it gets a charge of ______________ __. a.-1 c. 0 b.+1 d. it has no charge

21. Which of the following lists contain no ionic compound?  a.HCN, NO, Ca(NO3) c. NaH, CaF2, NaNH2  b. KOH, CCl4, SF6 d. CH2O, H2S, NH3

22. Ion X has a charge of 3+, and ion Y has a charge of 2-. What is the correct formula of the compound formed?  a. X3Y2 c. (XY)3 b. X2Y3 d. X2Y2

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