Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)
12th Edition
ISBN: 9780135755785
Author: Gerald Audesirk, Teresa Audesirk
Publisher: PEARSON+
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Chapter 32, Problem 2MC
Summary Introduction
Introduction:
Animals are divided into two categories based on their capacity to regulate body temperature by metabolic process: ectotherm and endotherm. During the break down of food at the cellular level, energy and heat are generated. In certain organisms, the heat generated helps them to regulate their body temperature, while in others the heat generated is in small quantity and hence, does not have much contribution in maintaining the body temperature of the organism.
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Which 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.
Ectotherms cannot be considered homeotherms, since they do not use mechanisms to keep their internal body temperatures at a constant temperature.
A. True
B. False
which of the following statements are true about homeostasis? Select all that apply.
a. The selective permeability of the cell membrane allows for thermoregulation.
b. Homeostasis is an organism‘s way of maintaining constant and balanced internal processes.
c. Ectotherms rely on environmental heat to maintain homeostasis.
d. Homeostasis works by a system of positive feedback.
Chapter 32 Solutions
Pearson eText Biology: Life on Earth with Physiology -- Instant Access (Pearson+)
Ch. 32.1 - Prob. 1CSCCh. 32.1 - Prob. 1HYEWCh. 32.1 - What would happen if a cold, shvering mammal...Ch. 32.1 - Prob. 2CSCCh. 32.1 - define homeostasis and explain why organisms...Ch. 32.1 - explain the difference between ectotherms and...Ch. 32.1 - Prob. 3CYLCh. 32.1 - Prob. 4CYLCh. 32.2 - By pumping carbon dioxide and other greenhouse...Ch. 32.2 - Prob. 1TC
Ch. 32.2 - Prob. 1CYLCh. 32.2 - describe the four types of tissues?Ch. 32.2 - name and describe the major human organ systems?Ch. 32.2 - Prob. 2CTCh. 32 - Which of the following statements is False? a....Ch. 32 - Prob. 2MCCh. 32 - Prob. 3MCCh. 32 - Prob. 4MCCh. 32 - Which of the following statements is True? a....Ch. 32 - The ability of the body to maintain its internal...Ch. 32 - Prob. 2FIBCh. 32 - Prob. 3FIBCh. 32 - Glands with ducts connecting them to the...Ch. 32 - Prob. 5FIBCh. 32 - Define homeostasis, and explain how negative...Ch. 32 - Define and compare ectotherms and endotherms....Ch. 32 - Prob. 3RQCh. 32 - Prob. 4RQCh. 32 - Prob. 5RQCh. 32 - what property distinguishes connective tissue from...Ch. 32 - Prob. 7RQCh. 32 - Prob. 8RQCh. 32 - Why does life on land present particular...Ch. 32 - Prob. 2ACCh. 32 - Imagine you are a health care professional...
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- The process of monitoring and adjusting of the body’s condition, such as temperature and pH, is known asa. exothermy.b. homeostasis.c. osmoregulation.d. ectothermy.arrow_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_forwardWhich of the following animals would you predict to have the lowest vitamin D3 requirement? Select one: a. Desert lizard and forest salamander because they are both ectotherms b. Forest salamander c. Human d. Howler monkey e. Desert lizardarrow_forward
- Which of these statements about homeostasis is true? a.The internal environment is maintained absolutely constant. b.Negative feedback mechanisms act to correct deviations from a normal range within the internal environment. c.Homeostasis is maintained by turning effectors on and off. d.All of these are true.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_forwardResearch the behaviours of a specific ectothermic animal. How do specific behaviours allow for the animal to control its body temperature in cool and hot conditions? How do specific parts of the animal’s anatomy help with thermoregulation? Use a feedback diagram to show how this animal uses thermoregulation in one of these conditions: ectotherm in cool conditions ectotherm in hot conditions Be sure to use ⊕ and ⊝ symbols in the feedback diagram to add important details.arrow_forward
- What is the trade-off of ectotherms with regard to maintaining an internal environment that doesn’t vary much? Ectotherms are larger than endotherms because they need to have a larger surface area to volume ratio in order to either increase or lower their temperature. Ectotherms usually have fur in order to conserve heat when they live in very cold environments. Ectotherms are smaller than endotherms because they need more surface area to dissipate heat relative to their insides. Ectotherms can survive in a wider variety of habitats because they are smaller and can behaviorally adapt to a wide variety of temperatures.arrow_forwardSweating is an example of variable. It is also an example of negative feedback mechanism. a. Both statements are true b. Both statements are false c. First is true, Second is false d. First is false, Second is truearrow_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
- Mark the following statements as true or false. If a statement is false, correct it to make a true statement. a. Structure and function are closely related at the organ level only. b. Homeostasis is the condition of having a dynamic equilibrium of the internal environment. c. Positive feedback loops are triggered by a deviation from a homeostatic set point and are shut down when conditions return to the set point. d. The effects of negative feedback loops are amplified to create an escalating response. e. Cell-cell communication is required to coordinate the activities of the whole bodyarrow_forwardWhy to humans shiver when the environment gets cold?a. To keep the body temperature equal to the external environment.b. To increase body temperature.c. To decrease body temperature.d. To regulate urine concentration.arrow_forwardWhich of the following is an endotherm? a. a shark b. a frog c. a monkey d. a snakearrow_forward
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