True or False: The increase in red blood cell count in tourists visiting Tibet is an example of acclimatization.

Which of the following animals would you expect to consume food at the highest rate (kilograms of food per kilogram of body weight per day)?

During the night, the dormouse forages and eats, but during the day, its body temperature and heart rate drop significantly. This is an example of what physiological process?

The amount of energy expended while an endothermic organism is resting, unstressed, and not actively digesting or growing is called its __________.

In most animals, food is digested by __________, __________ are absorbed by body cells, and most energy-containing molecules are used to generate __________.

What are three attributes of mitochondria and chloroplasts that suggest they were once free-living bacteria?

Which of these examples best describes the concept that form facilitates function?a. Crickets must balance their resources between spermatophore production and immune defenses.b. A desert jackrabbit has large ears that help eliminate excess heat.c. An Antarctic fish maintains homeostasis by conforming to the stable, external temperature.d. Honeybees will swarm around a predatory wasp and contract their flight muscles to generate a lethal ball of heat.

Consider the energy budgets for a human, an elephant, a penguin, a mouse, and a snake. The would have the highest total annual energy expenditure, and the would have the highest energy expenditure per unit mass.a. elephant; mouseb. elephant; humanc. mouse; snaked. penguin; mouse

The cells of an ant and an elephant are, on average, the same small size; an elephant just has more of them. What is the main advantage of small cell size? (Explain your reasoning.)a. A small cell has a larger plasma membrane surface area than does a large cell.b. Small cells can better take up sufficient nutrients and oxygen to service their cell volume.c. It takes less energy to make an organism out of small cells.d. Small cells require less oxygen than do large cells.