Multiple Choice
Which of the following best illustrates homeostasis?
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38. Animal Form and Function
Metabolism and Homeostasis
Back38. Animal Form and Function
Metabolism and Homeostasis
- Multiple ChoiceWhich of the following is a function of your circadian rhythm?925views
- Multiple ChoiceWhen a jogger starts to run, the rate at which his muscles produce CO2 rises sharply. But the CO2 in his blood rises only slightly before he starts to breathe faster and his heart starts beating stronger. Soon his increased rate of CO2 production is balanced by an increased rate of CO2 removal. This would be an example of __________ feedback because the jogger's circulatory and respiratory systems are __________.1011views
- Multiple ChoiceWhat kind of feedback most directly maintains homeostasis? Why is this?973views
- Multiple ChoiceWhich of the following animals would you expect to consume food at the highest rate (kilograms of food per kilogram of body weight per day)?971views
- Multiple ChoiceThe amount of energy expended while an endothermic organism is resting, unstressed, and not actively digesting or growing is called its __________.743views
- Multiple ChoiceIn most animals, food is digested by __________, __________ are absorbed by body cells, and most energy-containing molecules are used to generate __________.902views
- Textbook Question
True or False: The increase in red blood cell count in tourists visiting Tibet is an example of acclimatization.
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What are three attributes of mitochondria and chloroplasts that suggest they were once free-living bacteria?
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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.
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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; mouse
b. Elephant; human
c. Mouse; snake
d. Penguin; mouse
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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.
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Which of the following statements regarding surface area and volume in animals are correct? Select True or False for each statement.
T/FAs an animal grows, its volume increases more rapidly than its surface area.
T/FA chihuahua has a higher surface area to volume ratio than a Great Dane.
T/FAnimals with high surface area to volume ratios heat and cool more slowly than animals with lower surface area to volume ratios.
T/FAs an animal's volume increases, its total surface area decreases.
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Compared with a smaller cell, a larger cell of the same shape has
a. Less surface area
b. Less surface area per unit of volume
c. The same surface-area-to-volume ratio
d. A smaller cytoplasm-to-nucleus ratio
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Negative-feedback mechanisms are
a. Most often involved in maintaining homeostasis.
b. Analogous to a furnace that produces heat.
c. Found only in birds and mammals.
d. All of the above.
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