You observe that chimps use sticks to collect termites for food. Which of the following would indicate this the use of the stick is a learned behavior?
A. The chimp is the only member of his or her
population that exhibits this behavior.
B. The chimp prefers eating termites to other
types of insects.
C. Food is abundant in the chimp's
environment.
D. Chimpanzees raised in isolation do not
use sticks.
D
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Home-canned foods should be boiled before consumption to prevent botulism. Considering that this treatment does NOT destroy endospores, why would it be helpful in preventing the disease?
A. Because it would destroy the vegetative cells, and only the vegetative cells cause the disease. B. Because it would at least weaken the endospores, making them more susceptible to elimination by our immune system. C. Because the heat would denature the botulism exotoxin and inactivate it. The exotoxin is what leads to the disease symptoms, so this would make the food safer. D. Because the heat would denature the botulism endotoxin and inactivate it. The endotoxin is what leads to the disease symptoms, so this would make the food safer.
A reduction in the number of circulating erythrocytes results in which disorder?
A. anemia B. polycythemia C. thrombosis D. hematoma E. lupus erythromatosus
A behavior that can increase reproductive success of an individual male in a species is
A. All of the answer choices are correct. B. direct physical competition for the "right" to mate with a particular female. C. post-mating physical competition to block other males from subsequently mating with the female. D. the removal of the sperm from other males, so that there will be no successful fertilization. E. the ability to produce more sperm can be produced or released.
When your mother is mad at you, she likes to remind you that she spent 48 hours in painful labor to bring you into the world! Specifically, she means that she spent a long time in the ________ stage of labor
A) expulsion B) dilation C) third trimester D) placental