266 ❯ STEP 5. Build Your Test-Taking Confidence
- A lizard lacking a chemical defense mechanism
that is colored in the same way as a lizard that
has a defense mechanism is displaying
A. aposometric coloration.
B. cryptic coloration.
C. Batesian mimicry.
D. Müllerian mimicry.
E. deceptive markings.
10.Crossover would most likely occur in which
situation?
A. Two genes (1 and 2) are located right next to
each other on chromosome A.
B. Gene 1 is located on chromosome A, and
gene 2 is on chromosome B.
C. Genes 1 and 2 are located near each other on
the X chromosome.
D. Gene 1 is located on chromosome A; gene 2 is
located far away but on the same chromosome.
11.Imagine an organism whose 2n=96. Meiosis
would leave this organism’s cells with how many
chromosomes?
A. 192
B. 96
C. 48
D. 24
12.A student conducts an experiment to test the
efficiency of a certain enzyme. Which of the fol-
lowing protocols would probably not result in a
change in the enzyme’s efficiency?
A. Bringing the temperature of the experimen-
tal setup from 20°C to 50°C
B. Adding an acidic solution to the setup
C. Adding substrate but not enzyme
D. Placing the substrate and enzyme in a con-
tainer with double the capacity
13.You observe a species that gives birth to only one
offspring at a time and has a relatively long life-
span for its body size. Which of the following is
probablyalsotrue of this organism?
A. It lives in a newly colonized habitat.
B. It is an aquatic organism.
C. It requires relatively high parental care of
offspring.
D. The age at which the offspring themselves
can give birth is relatively young.
14.Which of the following is an example of a
detritivore?
A. Cactus
B. Algae
C. Bat
D. Fungus
15.In a certain population of squirrels that is in
Hardy-Weinberg equilibrium, black color is a
recessive phenotype present in 9 percent of the
squirrels, and 91 percent are gray. What percent-
age of the population is homozygous dominant
for this trait?
A. 21 percent
B. 30 percent
C. 49 percent
D. 70 percent
16.Refer to question 15 for details on the squirrel
population. Which of the following conditions is
required to keep this population in Hardy-
Weinberg equilibrium?
A. Random mating
B. Genetic drift
C. Mutation
D. Gene flow
17.A reaction that includes energy as one of its reac-
tants is called a(n)
A. exergonic reaction.
B. hydrolysis reaction.
C. endergonic reaction.
D. redox reaction.
18.To which of the following labeled trophic levels
would a herbivore most likely be assigned?
A. A
B. B
C. C
D. DDCBA