BIOLOGY
5th Edition
ISBN: 9781264104680
Author: BROOKER
Publisher: MCG
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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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Students have asked these similar questions
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 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 is not a way that ectotherms can change their body temperatures? a. Sweating for evaporative cooling. b. Adjusting the timing of their daily activities. c. Seek out or avoid direct sunlight. d. Huddle in a group.arrow_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
- How 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_forwardWhich of the following is incorrect?a. Equilibrium requires a constant input of energy.b. Positive feedback is less common in nature than negative feedback.c. Homeostasis does not imply that a given variable is unchanging.d. Fever is an example of resetting a set point.e. Efferent pathways carry information away from the integrating center of a reflex arc.arrow_forwardMatch the body temperature control item to the appropriate location in the negative feedback loop. Effector when variable is low Effector when variable is high Control center Sensor Controlled variable A. Muscles for shivering and goosebumps B. Nerves in skin C. Brain D. Sweat glands E. Temperaturearrow_forward
- For 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_forwardWhich 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_forward
- Construct 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_forwardThe act of breathing raises the blood oxygen level, lowers the blood carbon dioxide concentration, and raises the blood pH. According to the principles of negative feedback, sensors that regulate breathing should respond to a. a rise in blood oxygen. b. a rise in blood pH. c. a rise in blood carbon dioxide concentration. d. all of these.arrow_forwardFever increases the body temperature and can induce chills to help cool the temperature back down. What other mechanisms are in place to regulate the body temperature?a. shiveringb. sweatingc. erection of the hairs on the arms and legsd. all of the abovearrow_forward
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