2013 AP Biology生物真题系列之选择题免费下载

历年AP Biology生物系列

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2013 AP Biology Practice Exam Multiple Choice and Grid-In Questions Free Download

2013 AP 生物模考选择题部分免费下载

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1）A dog is following the scent of a jackrabbit. Which of the following accurately describes how the dog’s brain integrates information for smell?

1. Chemoreceptors in the brain send impulses for smell in the nasal cavity.
2. Chemoreceptor cells in the nasal cavity send impulses to the appropriate area of the brain.
3. Chemoreceptors on epithelial cells of the tongue send hormones to the appropriate area of the brain.
4. Receptors originating in the nose send action potentials to the motor regions of the brain.

2)Thrips are insects that feed on rose pollen. Scientists noted that the thrips population increased in the spring and decreased dramatically during the summer. The researchers hypothesized that food abundance was the limiting factor for the population. Which of the following types of data would be most useful for the scientists to collect at regular intervals on a designated test plot of rose plants?

1. Amount of sunlight (hours/day)
2. Mean temperature (°C)
3. Density of rose pollen produced (g/m²)
4. Amount of pollen produced by each flower (g/flower)

4)Undersea landslides can disrupt marine habitats by burying organisms that live on the ocean floor. The graph above shows the size of a population of a certain organism that lives on the ocean floor. The population was affected by a recent landslide at the time indicated on the graph. Which of the following best predicts how the population will be affected by the landslide?

1. The surviving organisms will evolve into a new species.
2. The reduced population will likely have allelic frequencies that are different from the initial population.
3. The population will adapt to deeper waters to avoid future landslides.
4. The reduced population will have a greater number of different genes than the initial population.

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