Quiz Top of Form Note: It is recommended that you save your response as you complete each question. Question 1 (1 point) Which statement about evolution is FALSE? Question 1 options: According to evolutionary theory, you are related to a bacterium, to a yeast cell, to a snake, and to a whale. In fact, you are related to every species now alive on Earth, and to fossil species like dinosaurs as well. Natural selection acts on genetic differences within a population to cause evolution. Individuals do not evolve. Natural selection is about slow but steady progress. Through it, populations constantly get better-adapted. When this process is completed for all populations, evolution will come to a stop. Evolution occurs constantly, without end; there is no endpoint in evolution. Question 2 (1 point) Negatively charged particles are found where in an atom? Question 2 options: In the nucleus In a single layer outside the nucleus In multiple layers outside the nucleus Both inside and outside the nucleus Question 3 (1 point) Which characteristic of water protects fish when a lake freezes? Question 3 options: cohesion water is less dense as a solid water as a solvent all of the above Question 4 (1 point) You have a solution that has a pH of 8 and need it to be pH 5. What do you do? Question 4 options: Add water Add a base Add an acid Add a buffer Question 5 (1 point) What characteristic of carbon makes it a good backbone for creating diverse and durable molecules? Question 5 options: Carbon is a large atom. Carbon forms four covalent bonds. Carbon forms hydrogen bonds. All of the above Question 6 (1 point) Which of the following structures can be found together in eukaryotic cells? Question 6 options: cytoplasm and ribosomes cytoplasm and plasma membrane DNA and ribosomes ribosomes and endoplasmic reticulum Question 7 (1 point) Which of the following reactions or pathways is catabolic? Question 7 options: Converting glucose to carbon dioxide and water (cellular respiration). Making starch from many glucose molecules. Photosynthesis: which builds glucose from carbon dioxide using energy from light. Making ATP from ADP and Phosphate. Question 8 (1 point) In a metabolic pathway, a typical control mechanism is to have: ________ Question 8 options: the final product inhibit the enzyme responsible for its own production. the final product inhibit an early step. a reactant inhibit a late step. a lack of reactant stimulate the pathway. Question 9 (1 point) Mitosis results in ______ cells and meiosis results in _______ cells. Question 9 options: haploid, diploid diploid, haploid diploid, diploid haploid, haploid Question 10 (1 point) In beans yellow (Y) is dominant to green (y) and smooth (S) is dominant to wrinkled (s). What are the possible genotypes for the offspring of the following cross: YySS and YYSs. Question 10 options: YYSS, YYss, yySS, yyss YS, yS, YS, yS Yy, SS, YY, Ss YYSS, YySS, YYSs, YySs Question 1 ...

1. Quiz
Top of Form
Note: It is recommended that you save your response as you
complete each question.
Question 1 (1 point)
Which statement about evolution is FALSE?
Question 1 options:
According to evolutionary theory, you are related to a
bacterium, to a yeast cell, to a snake, and to a whale. In fact,
you are related to every species now alive on Earth, and to
fossil species like dinosaurs as well.
Natural selection acts on genetic differences within a population
to cause evolution. Individuals do not evolve.
Natural selection is about slow but steady progress. Through it,
populations constantly get better-adapted. When this process is
completed for all populations, evolution will come to a stop.
Evolution occurs constantly, without end; there is no endpoint
in evolution.
Question 2 (1 point)
Negatively charged particles are found where in an atom?
Question 2 options:
In the nucleus
In a single layer outside the nucleus
In multiple layers outside the nucleus

2. Both inside and outside the nucleus
Question 3 (1 point)
Which characteristic of water protects fish when a lake freezes?
Question 3 options:
cohesion
water is less dense as a solid
water as a solvent
all of the above
Question 4 (1 point)
You have a solution that has a pH of 8 and need it to be pH 5.
What do you do?
Question 4 options:
Add water
Add a base
Add an acid
Add a buffer
Question 5 (1 point)
What characteristic of carbon makes it a good backbone for
creating diverse and durable molecules?
Question 5 options:
Carbon is a large atom.
Carbon forms four covalent bonds.

3. Carbon forms hydrogen bonds.
All of the above
Question 6 (1 point)
Which of the following structures can be found together in
eukaryotic cells?
Question 6 options:
cytoplasm and ribosomes
cytoplasm and plasma membrane
DNA and ribosomes
ribosomes and endoplasmic reticulum
Question 7 (1 point)
Which of the following reactions or pathways is catabolic?
Question 7 options:
Converting glucose to carbon dioxide and water (cellular
respiration).
Making starch from many glucose molecules.
Photosynthesis: which builds glucose from carbon dioxide using
energy from light.
Making ATP from ADP and Phosphate.
Question 8 (1 point)
In a metabolic pathway, a typical control mechanism is to have:
________
Question 8 options:

4. the final product inhibit the enzyme responsible for its own
production.
the final product inhibit an early step.
a reactant inhibit a late step.
a lack of reactant stimulate the pathway.
Question 9 (1 point)
Mitosis results in ______ cells and meiosis results in _______
cells.
Question 9 options:
haploid, diploid
diploid, haploid
diploid, diploid
haploid, haploid
Question 10 (1 point)
In beans yellow (Y) is dominant to green (y) and smooth (S) is
dominant to wrinkled (s). What are the possible genotypes for
the offspring of the following cross: YySS and YYSs.
Question 10 options:
YYSS, YYss, yySS, yyss
YS, yS, YS, yS
Yy, SS, YY, Ss
YYSS, YySS, YYSs, YySs
Question 11 (1 point)

5. Red rose color is incompletely dominant over white rose color.
If a red rose is crossed with a pink rose, what percentage of the
offspring will be pink?
Question 11 options:
100
75
50
25
Question 12 (1 point)
One of the products of cellular respiration is ________.
Question 12 options:
water
sucrose
cellulose
oxygen
Question 13 (1 point)
An ecologist is studying all the animals, plants, fungi and
bacteria, as well as the interaction among them, in a forest? He
is studying the _________ in the forest.
Question 13 options:
niche
biome

6. community
population
Question 14 (1 point)
The temperature optimum for an enzyme is 37C. What will most
likely happen if you increase the temperature from 37C to 50C?
Question 14 options:
The enzyme activity will not be affected
The enzyme activity will increase
The enzyme activity will decrease
The pH will increase
Question 15 (1 point)
When celery is placed in a glass of pure water the solution
inside its cells is _____ compared to the water.
Question 15 options:
selectively permeable
isotonic
hypertonic
hypotonic
Question 16 (1 point)
An ecosystem can be characterized as:
Question 16 options:
populations + community.

7. all species, population, and community interactions for
organisms in a given area.
the abiotic components of the environment.
all of the biological interactions, plus interactions with the
abiotic environment, in a given area.
Question 17 (1 point)
In October of 2003, a raging wildfire swept through the
mountain ecosystems in Southern California, burning everything
in its path to the ground and driving away all of the animals. In
order for the mountain ecosystem to re-establish itself, which
member of the food web has to return first?
Question 17 options:
deer
coyotes
snake
grasses
Question 18 (1 point)
Carbohydrates are not
Question 18 options:
stored potential energy
made mostly of nitrogen and carbon.
broken down by cellular respiration.
made by producers.
Question 19 (1 point)

8. A primary consumer would eat:
Question 19 options:
secondary consumers
plants.
Bacteria.
rabbits.
Question 20 (1 point)
Diffusion is
Question 20 options:
1. One type of active transport
1. The movement of water across the cell membrane
1. The movement of molecules from an area of high
concentration to an area of low concentration
1. The movement of molecules from an area of high
concentration to an area of low concentration
Question 21 (1 point)
Any individual organism has the potential to adapt to its
environment, if it is given enough time and possesses a
mechanism to generate variation.
Question 21 options:
True
False
Question 22 (1 point)

9. Humans are more likely to be infected by viruses after the
viruses had a chance to multiply outside the body on surfaces
touched by infected people.
Question 22 options:
True
False
Question 23 (1 point)
Once an adaptation appears, it remains in all the descendants
unless the species becomes extinct
Question 23 options:
True
False
Question 24 (1 point)
During a time when resources are abundant, one would not
expect much evolutionary change to happen.
Question 24 options:
True
False
Question 25 (1 point)
When a founder population has a small gene pool, evolutionary
change is more likely to be rapid than if the founder population
has a large gene pool.
Question 25 options:
True

10. False
Question 26 (1 point)
When speciation occurs, the result is a dramatic change in the
new species.
Question 26 options:
True
False
Question 27 (1 point)
When two groups are reproductively isolated, it can be
predicted that speciation will soon follow.
Question 27 options:
True
False
Question 28 (1 point)
Fossil evidence suggests that human ancestors arose one time in
Africa.
Question 28 options:
True
False
Question 29 (1 point)
Levels of ultraviolet light influences vitamin D production is
humans.
Question 29 options:
True

11. False
Question 30 (1 point)
Mitochondria and chloroplasts of eukaryotic cells are very
similar to prokaryotes
Question 30 options:
True
False
Question 31 (1 point)
Organisms that live in habitats with high levels of competition
are more likely to produce defensive chemicals than those that
live with little competition.
Question 31 options:
True
False
Question 32 (1 point)
The human population may continue to increase even though it
surpasses carrying capacity.
Question 32 options:
True
False
Question 33 (1 point)
Scientific studies suggest that the many organs susceptible to
cancer as a result of smoking, the kidneys and bladder are
exceptions, showing no differences in cancer rates as compared
to non-smokers.
Question 33 options:

12. True
False
Question 34 (1 point)
A woman’s ovum will complete Meiosis II only, if fertilization
has occurred.
Question 34 options:
True
False
Question 35 (1 point)
One human disease is caused by a change in the DNA from
GAA to GUA. This change is an example of:
Question 35 options:
crossing over
a mutation
a meiosis error
a mitosis error
Question 36 (1 point)
The main function of a ribosome is to ____________________.
Question 36 options:
extract energy from glucose
synthesize glucose
store food in the form of fat

13. synthesize proteins
Question 37 (1 point)
The effectiveness of a medication containing growth hormone is
tested on a group of young male rabbits 3 weeks of age. The
best control group would be:
Question 37 options:
any group of rabbits
a group of young male rabbits 3 weeks of age, not given the
medication
a group of young female rabbits 3 weeks of age, not given the
medication
no control is required; just measure whether the rabbits grew
Question 38 (1 point)
The number of _______________ in the outer shell of an atom
determines the type of chemical bonds an atom can make.
Question 38 options:
electrons
protons
ions
neutrons
Question 39 (1 point)
You find a cell of a type you have never seen before. The cell
has both a nucleus and a cell wall. Therefore, you conclude, it
must be a _______________ cell.

14. Question 39 options:
liver
animal
bacterial
plant
Question 40 (1 point)
The gene pool of a population may change due to:
Question 40 options:
migration
genetic drift
natural selection and mutation
all of the above
Question 41 (15 points)
1. You have read that inorganic fertilizers contribute to water
pollution and would like to make a switch from inorganic
fertilizers to organic compost in your vegetable garden. A
friend graciously gives you a truck load of his compost. As a
good researcher and critical thinker you are not convinced that
organic compost will yield the same results as the inorganic
fertilizer you have used for years with good results. To draw
your own conclusion based on scientific evidence you decide to
conduct an experiment in your garden. State a good hypothesis,
design an experiment (include test subjects, sample size,
control(s), dependent and independent variables, type of data
collected) and hypothetical results/conclusion. Does your
conclusion support the hypothesis?

15. Question 41 options:
Question 42 (15 points)
1. The habitat of one species of tropical fish is red coral reefs.
The large majority of the fish in this population are red. A few
individual fish carry a mutation that prevents the production of
the red pigment; as a result these individual fish are white. The
temperature of the ocean where these fish live gets warmer and
warmer over a 10 year period, and as a result the coral is
bleached and turns white. Use what you have learned about
natural selection to explain how this bleaching event may have
affected the evolution this fish population (not including
possible direct effects of warmer temperatures on the fish).
Include the following terms in your explanation: differential
reproduction, beneficial trait, allele frequency, selection
pressure, evolution.
Question 42 options:
Question 43 (15 points)
1. Describe the major land biome where you live. How have
human activities changed the landscape and how has this
affected native species? Include specific examples.
Question 43 options:
Question 44 (15 points)
1. You scoop up a water sample from a local pond nearby,
because you are curious about the possible microbes that might
live there. After looking at several slides that held drops of the
sample, you noticed two different kinds of cells: One kind was
very small and had no separate internal structures; the other
kind was much larger, and it contained several kinds of internal
structures that were physically different from each other. Please
name each cell and briefly describe their overall similarities and

16. differences.
Question 44 options:
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