Overstuffed adipose cells harm organs by ____
a. overfilling body cavities
b. storing hazardous chemicals
c. inducing a chronic inflammation response
d. becoming cancer cells
e. reducing oxygen flow
ANSWER: c
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The two amino acids in the accompanying figure both have side groups (R groups) that are ____
a. acidic and polar b. uncharged and nonpolar c. basic and polar d. acidic and nonpolar e. uncharged and polar
Which of the following represents an activity
within a population?
a. a fox consuming a rabbit b. the absorption of nitrogen by bacteria and converting it to a form useful to plants c. a peacock spreading and shaking his feathers to attract a female d. moss growing on the north side of a large pine tree e. a virus causing rabies in a dog
Suppose a scientist is interested in studying DNA regulatory elements. What should she prepare first?
a. cDNA library b. genomic library c. transgenic mouse d. Northern blot e. DNA chip
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?
A) The surviving organisms will evolve into a new species. B) The reduced population will likely have allelic frequencies that are different from the initial population. C) The population will adapt to deeper waters to avoid future landslides. D) The reduced population will have a greater number of different genes than the initial population.