Some Fish Have the Ability to Keep Certain Parts of Their

question 61

Multiple Choice

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

• A)countercurrent heat exchangers.
• B)found in locomotor muscles of certain species of large fish,such as tuna and lamnid sharks.
• C)special adipose cells that generate heat.
• D)A and B

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Definitions:

Covalent Bonds

Chemical bonds formed by the sharing of electron pairs between atoms, contributing to the stability of molecules.

Molecular Oxygen

A diatomic molecule \(\text{O}_2\) that is essential for respiration in aerobic organisms and acts as the final electron acceptor in cellular respiration.

Electrons

Subatomic particles with a negative charge that orbit the nucleus of an atom.

Positive Charge

An electrical charge with more protons than electrons, resulting in a net surplus of positive electric charge.