Ions are formed when an atom gains or loses

ATI RN

ATI RN Test Bank

Ions are formed when an atom gains or loses:

A. electrons B. neutrons C. protons D. electrons or neutrons

Correct Answer: A

Rationale: Ions form by gaining or losing electrons, altering charge without changing the element.

The molecule that body cells use as an immediate source of energy is:

A. amino acids B. deoxyribonucleic acid C. fatty acids D. glucose

Correct Answer: D

Rationale: Glucose is the primary energy source for cellular respiration.

Which of the following is NOT a lipid?

A. Amino acids B. Fats C. Phospholipids D. Steroids

Correct Answer: A

Rationale: Amino acids are protein monomers, not lipids.

A hydrolysis reaction that breaks down macromolecules is also called

A. synthesis B. degradation C. composition D. replacement

Correct Answer: B

Rationale: Hydrolysis degrades macromolecules into monomers by adding water.

Epithelial tissue receives nutrients from the the epithelial tissue.

A. blood vessels associated with B. cartilage tissue that surrounds C. connective tissue beneath D. muscle tissue beneath

Correct Answer: C

Rationale: Epithelium is avascular; nutrients diffuse from underlying connective tissue's blood vessels.

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