AP BIO UNIT 8

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The effects of both temperature and oxygen on germination

1

Comparing results from which of the following pairs of beakers would help determine if enzymes are necessary for germination?

1 and 2

The average brood size per mated individual upon reintroduction of food following 30 days of ARD is closest to which of the following?

50

Which of the following describes the mechanism by which a plant stem grows toward light?

Cells on the dark side of the stem elongate more than those on the lighted side

Identify the experimental design that would determine which AIPAIP mimic would most effectively inhibit the production of hemolysin toxin.

Grow S. aureus in separate culture media containing one AIPAIP mimic each and measure the production of hemolysin toxin. The most effective AIPAIP mimic will be in the culture producing the lowest amount of hemolysin.

Which of the following best explains how the change in underwater visibility affected armor plating in Lake Washington sticklebacks between 1957 and 1976?

Higher visibility made the sticklebacks more susceptible to large-toothed predators in the lakes, giving complete armor a selective advantage.

Which of the following best explains the observations concerning DDT resistance in mosquitoes?

Natural selection favors DDT-resistant mosquitoes that are already present in a population when DDT exposure occurs.

Which of the following best addresses the validity of the conclusion made by the students?

The conclusion is invalid because other variables in the experiment (both biotic and abiotic) affected the results.

The experimental design allows testing of which of the following?

The effects of both temperature and oxygen on germination

As depicted in the diagram, honeybees communicate the location of flower patches to members of their hives with waggle dances that give information about the direction and distance to the flowers. Which of the following statements about how honeybees communicate the position of flower patches is most consistent with the model?

The farther the target flowers from the hive, the longer the waggle phase.

Which of the following correctly identifies the dependent variable and the independent variable for the experiment?

The independent variable is the type of alarm, and the dependent variable is the percent of squirrels responding.

Which of the following conclusions is most consistent with the data shown in Figure 2?

The number of days an animal spends in ARD does not significantly affect its time of survival after reintroduction of food

Which of the following correctly identifies the dependent and independent variables in this experiment?

The percentage of plants showing phototropism is the dependent variable, and the color of the light is the independent variable.

In short-day (long-night) plants, the critical environmental factor that induces flowering is the

duration of uninterrupted dark only

Which of the following best describes the reproductive ability of C. elegans following the ARD induced in the first experiment?

mating with a well - fed male consistently produced offspring than did reproduction via self fertilization.


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