BIOLOGY
5th Edition
ISBN: 9781265202859
Author: BROOKER
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Chapter 47, Problem 10TY
Summary Introduction
Introduction: Loss of body heat is an important process for living organism for the regulation of their body temperature. Heat loss is also a very important process for the regulation of
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Heat exchange with the environment depends on the surface area-to-volume ratio of the body. Assuming that the body shape of an animal is at least somewhat spherical, a considerable decrease in body size would _______ the surface area-to-volume ratio, and the ability to exchange heat with the environment would _______.
A.
increase; increase
B.
increase; stay about the same
C.
increase; decrease
D.
decrease; increase
E.
decrease; stay about the same
Which of the following statements is True?a. Ectotherms generate most of their body heatmetabolically.b. Ectotherms include birds and mammals.c. Ectotherms experience variable body temperatures.d. Ectotherms are known as “warm-blooded” animals.
When 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 above
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 adaptations is only found in mammals and not other vertebrates: O a. Havinga complete double circulation of the blood. O b. Havinga heat insulating layer of fat under the skin. O c. Having lungs enclosed in a rib cage. O d. Having colour vision. O e. Generating heat by shivering.arrow_forwardWhich 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 truearrow_forwardWhich of the following occurs in the legs of goose (bird) standing on a frozen pond? Group of answer choices A. Warm blood from the body flows toward the legs of the bird. B. Cool blood from the feet flows toward the body of the bird. C. Heat is transferred from warm blood to cooler blood, reducing loss of heat to the environment. D. A and C E. A, B, and Carrow_forward
- The skin of a fish produces mucus whose function is: O a. It repels predators. O b. It helps the sense organs to detect water vibrations. O c. It is a protection for the skin against salt water. O d. It reduces friction over the skin during swimming. O e. it protects the scale of the skin from damage.arrow_forwardHow does low temperature effect the life processes of cold-blooded animals? Select one: a. increases the procceses of heat emission b. decreases the procceses of heat emission c. decresaes heat buildup d. increases heat buildup e. changes the daily activityarrow_forwardFor a frog, the disadvantage of cutaneous respiration (through the skin) is: O a. It has to have an extremely thin skin. O b. It constantly loses water. O. Most of its blood supply is now in its skin collecting oxygen. O d. It constantly loses heat through the skin. Oe. It has an extensively folded skin to increase its surface area.arrow_forward
- Which of the following mechanisms could both be used by the body to increase body temperature if a person forgets a coat on a cold day? A. Superficial blood vessels dilate, and the thyroid decreases metabolism. B. Superficial blood vessels constrict, and the thyroid decreases metabolism. C. Superficial blood vessels dilate, and the thyroid increases metabolism. D. Superficial blood vessels constrict, and the thyroid increases metabolism.arrow_forwardWhich of the following is NOT a mechanism to maintain the body’s internal temperature? A. Fluid has a high capacity for heat, so it requires a great deal of energy to raise its temperature. B. Warmed fluids from the body’s surface return to the body’s core, thus heating the body. C. Fluid acts as a coolant by increasing the blood flow from the warm body core to the peripheral tissue, thus cooling the body. D. Fluid is evaporated as sweat from the skin’s surface, thus cooling the body.arrow_forwardConstruct a model for the relationship between the heart rate of mammals and theirweight. Also give all assumptions you make.You may assume the following:arrow_forward
- Which of the following help mammals retain body heat? hair and body fat Obones and body fat bones and sweat glands hair and sweat glandsarrow_forwardStimulation of the heat-loss center causes ________.a. blood vessels in the skin to constrictb. breathing to become slow and shallowc. sweat glands to increase their outputd. All of the abovearrow_forwardwhich of the following situations illustrates that a homeostatic mechanism is not operating properly? a. acute high blood pressure b. normalized blood glucose levels c. dailt fluid intake equals dailty fluid output d. all of these illustrate homestatic mechanisms operating properlyarrow_forward
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