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Exam 15: Thermal Physiology

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Question 41

Multiple Choice

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The mechanism by which bumblebees and certain moths generate preflight heat in thoracic muscles involves

A) a metabolic futile cycle in carbohydrate metabolism
B) the simultaneous contraction of antagonistic flight muscles.
C) rapid wing movement that avoids lift.
D) all of the above

E) A) and C)
F) A) and B)

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Question 42

Multiple Choice

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Of the major classes of macromolecules,only __________ are substantially affected by temperature over the normal range experienced by animals.

A) proteins and lipids
B) carbohydrates
C) nucleic acids
D) all of the above

E) A) and B)
F) None of the above

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Question 43

Short Answer

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__________ are animals that thrive in the extreme cold.

Thermogenic pathways rely on __________ cycling in which chemical potential energy is spent to generate heat.

Which of the following is most synonymous with the term ectotherm?

The antifreeze glycoproteins (AFGPs) share a common ancestry with

The observation that a given enzyme retains its kinetic properties in different species adapted to different temperature regimes is a phenomenon known as

The central thermostat of birds appears to reside in the

The use of skeletal muscles to generate heat in birds and mammals is referred to as __________.(two words)

Some fish have the ability to keep certain parts of their body warm by the use of retia.Retia are

Cells can remodel their membranes to preserve fluidity in a process known as __________ adaptation.