BIOLOGY
5th Edition
ISBN: 9781264104680
Author: BROOKER
Publisher: MCG
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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
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.a
25%
.b
24%
.c
19%
.d
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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
Thermoregulation is the process by which animals maintain an internal temperature within a
tolerable range.
Which of the following statement is NOT TRUE about Thermoregulation ?
Lütfen birini seçin:
O a. Endothermic animals generate heat by metabolism
O b. Ectothermic animals gain heat from external sources
O c. In general, ectotherms tolerate greater variation in internal temperature, while endotherms are active at a greater
range of external temperatures
O d. Ectothermy is more energetically expensive than endothermy
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 will NOT elevate metabolic rate? A. ncreased Age B. Decreased Body Temperature C. Increased Weight (i.e., Mass) D. A and B E. All of the Abovearrow_forwardcreate a question about animal physiology thermogenesis that shows you understand the topic to ask someone else. this was the start of my question but I do not know what to ask ??? please help Endotherms can alter metabolic heat production to maintain body temperature using both shivering and non-shivering thermogenesis.arrow_forwardWhich of the following definitions best describes an individuals Basal Metabolic Rate? The amount of energy used while eating. O The amount of calories required to support an active lifestyle. O The ratio of total cholesterol / HDL. ( The number of calories to keep a body functioning at rest.arrow_forward
- With regard to thermoregulation in humans, what could be considered an accurate consequence of the outside temperature dropping below the lower critical temperature? A. The individual will begin to breathe in less oxygen and exhale less carbon dioxide. B. The metabolic needs of the individual will increase if they remain below the lower critical temperature for sufficient time-frames. C. Capillaries (i.e. blood vessels) near the surface of the skin will dilate in order to allow blood to circulate more freely throughout the organism, distributing heat to raise temperature. D. The person's Basal Metabolic Rate will be lowered to match the Standard Metabolic Rate of an ectotherm of comparable size. E. Hormones from the hypothalamus will be released, which lead to the initiation of a positive feedback response that amplifies muscle contraction, leading to shivering.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_forwardIn a fully grown animal (i.e., one that is not growing), ingested energy becomes O excreted chemical energy + absorbed chemical energy. O heat + chemical energy accumulated in body tissues. heat + excreted chemical energy + mechanical energy of external work + absorbed energy O heat + absorbed chemical energy.arrow_forward
- Which of the following does NOT increase basal metabolic rate (BMR)? a. Stress b. Added muscle mass c. Aging d. Growth O e. Increased body temperaturearrow_forwardChoose the best (of these options) human condition for measuring a proper basal metabolic rate. A. 15 minutes AFTER a light jog B. 15 minutes AFTER breakfast C. In the early morning BEFORE breakfast D. While swimming in a hot tub E. While sick with a coldarrow_forwardThe following statements describe the reason why water is most essential nutrient, except: A. Water makes up about 60% of the adult human weight and is not caloric. B. Essential nutrients are dissolved in water. C. Water regulates body temperature. D. Water is needed for various metabolic processes in the body.arrow_forward
- When energy in is greater than energy out, this is termed and usually weight gain occurs. a. thermic effect of food O b. positive energy balance Oc. non exercise activity thermogenesis d. negative energy balancearrow_forwardShivering to keep the body warm is an example ofa. anabolism.b. catabolism.c. metabolism.d. homeostasis.arrow_forwardlight stimulus Refer to the figure below to answer the question that follows: 40 Bobcat (endotherm) H Enake (netother) 10 10 40 20 30 Ambient temperature (°C) 51. The diagram above shows the body temperature vs ambient temperature for a bobcat and snake. The Despite this extra energy animal that is expending more energy at lower temperatures is the expenditure, the payoff is that a. snake; it can be active during a wide range of temperatures b. bobcat; it can conserve energy c. snake; it can conserve energy d. bobcat; it can be active during a wide range of temperatures snake; it can hide for longer in Mr. vonk's physics room e. Body temperature (°C) 20arrow_forward
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