Question 1

In vertebrates, the major integrative center of the thermostat is located in the _______.

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Question 2

The metabolic rate of a resting endotherm at a temperature within the thermoneutral zone is called the _______.

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Question 3

To calculate the sensitivity of a physiological process or reaction to temperature, you must calculate its rates both at a certain temperature and at a temperature lower by _______°C.

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Question 4

The maintenance of stable physiological conditions in the internal environment of an organism is called _______.

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Question 5

The linings of many hollow organs consist of _______ tissue.

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Question 6

If the Q₁₀ = 2.5 for a given reaction, and the reaction produces 4,000 molecules per minute, _______ molecules per minute will be produced if body temperature is raised by 10°C.

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Question 7

In mammals, most nonshivering heat production occurs in the adipose tissue called _______.

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Question 8

_______ feedback amplifies a response or increases deviation from a set point.

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Question 9

The most abundant protein in our bodies, called _______, is found in connective tissue.

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Question 10

The human immune system responds to an infection by producing _______, which cause many of the symptoms of sickness such as fever.

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The immune system responds to infections by producing endogenous pyrogens, which are chemicals that can induce fever and other symptoms of sickness. Exogenous pyrogens, which come from outside the body, can also cause fever, but they are not produced by the immune system. Thermogenins are proteins found in brown adipose tissue that can generate heat, but they are not directly involved in the immune response to infections. Therefore, the best choice is A) endogenous pyrogens.

Question 11

Measurements of a fish's Q₁₀ made during the summer often do not accurately predict its actual metabolic rate as measured in the winter, because the animal has _______ to the seasonal change.

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Question 12

The four types of tissues are epithelial, muscle, nervous, and _______.

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Question 13

Animals that can modulate their body temperature by generating metabolic heat are called _______.

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Question 14

In terms of the predominant source of heat that determines its body temperature, an animal can be classified as an endotherm, ectotherm, or _______.

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Question 15

In certain "hot" fish such as bluefin tuna, heat is exchanged between vessels carrying blood in opposite directions. This mechanism is called _______.

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Question 16

Which of the following statements about hibernation is false?

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Question 17

The sensitivity of a physiological process or reaction to temperature is described by its _______ value.

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Question 18

_______, derived from bacteria or viruses that invade the body, cause fever.

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Question 19

A Q₁₀ value of 3 indicates that a reaction rate has _______ over a temperature range of 10°C.

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Question 20

Environmental temperature influences the body temperature of many animals, especially those that live in _______ environments.

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Quiz 40: Physiology, Homeostasis, and Temperature Regulation