BIOLOGY
5th Edition
ISBN: 9781265202859
Author: BROOKER
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Chapter 47, Problem 6TY
Summary Introduction
Introduction: Vertebrate animals regulate temperature homeostasis by various kinds of thermoregulation processes. For meeting the energy requirements of the body, the body needs to burn calories per unit time.
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At rest, how much body energy is used by the skeletal
muscles and the heart
.a
25%
.b
24%
.c
19%
.d
20%
The thermoneutral zone is the range of body temperatures over which an animal can maintain a constant basal metabolic rate. Which of the following patterns about thermoregulation is true?
A.
Below the lower critical threshold, animals must decrease their metabolic rate in order to maintain body temperature
B.
Animals living in the arctic have higher critical temperatures than do animals in the tropics
C.
When outside temperatures are below the lower critical temperature for an animal, animals in the arctic increase their metabolic rate faster than do animals in the tropics
D.
All of the above
E.
None of the above
Which of the following statements about metabolic heat is true?
A. All animals produce metabolic heat
B. Homeotherms rely on metabolic heat to maintain body temperature
C. Animals that use metabolic heat to maintain body temperature are at lower risk of overheating
than animals that do not use metabolic heat to maintain body temperature
D. Relative to their body size, large animals lose more metabolic heat to the environment than
small animals
E. All of the above are true
Chapter 47 Solutions
BIOLOGY
Ch. 47.2 - Prob. 1CSCh. 47.2 - Prob. 2CSCh. 47.3 - Can the relationship between body size and...Ch. 47.3 - What observation led to the experiments conducted...Ch. 47.3 - CoreSKILL How did the experimental linking of the...Ch. 47.3 - Prob. 3EQCh. 47.4 - Prob. 1CCCh. 47 - Prob. 1TYCh. 47 - Gluconeogenesis a. occurs when the liver...Ch. 47 - Prob. 3TY
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- Which of the following individuals would have the lowest basal metabolic rate? a. a person with protein malnutrition b. a pregnant women O c. a tall, thin person d. a person who lives in cold environmentarrow_forwardWhich of the following statements about metabolic heat is true? A. Relative to their body size, animals that maintain body temperature by metabolic heat production have lower metabolic rates than animals that do not use metabolic heat to maintain body temperature B. Metabolic heat is the product of inefficiencies in the biochemistry of life C. Homeotherms rely on metabolic heat to maintain body temperature D. Relative to their body size, larger animals lose more metabolic heat to the environment than smaller animals E. All of the above are truearrow_forwardWhen the environmental temperature is higher than its body temperature, a toucan (a bird with a very large beak) will increase heat loss by... A. Increasing blood flow to the beak to shed heat by radiation and convection B. Moving to a breezy location to take advantage of convective heat loss C. Gular fluttering D. Lowering heat generated via brown adipose tissue E. All of the abovearrow_forward
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- Mineralsa. are inorganic nutrients.b. compose about 4–5% of total body weight.c. act as buffers and osmotic regulators.d. are components of enzymes.e. All of these are correct.arrow_forwardThe cost of being endothermic is a high demand for energy (food) to support metabolic heat production. Compared with large endotherms (such as a polar bear), small endotherms (mouse) require feeding rates, partly because they have a surface area-to-volume ratio A. similar; similar B. lower; lower O C. higher; higher O D. lower; higher O E. higher; lowerarrow_forwardWhich of the following would increase the rate of heat exchange between an animal and its environment? feathers or fur wind blowing across the body surface vasoconstriction blubber or fat layer please help A researcher is setting up an experiment to measure basal metabolic rate in prairie voles (Microtus ochrogastera small rodent). Which of the following would be the best set of conditions for the voles immediately before and during the measurement? House the animals in a cage with plenty of food and water to avoid stress; conduct measurements in a warmer room than the room where housed. House the animals in a cage with no food for a few hours before measurement; conduct measurements in a room the same temperature as the room where housed. House the animals in a cage with plenty of food and water to avoid stress; conduct measurements in a room the same temperature as the room where housed. House the animals in a cage with no food for a few hours…arrow_forward
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