Protein catalysts are known as

ATI RN

ATI RN Test Bank

Protein catalysts are known as:

A. acids B. buffers C. enzymes D. genes

Correct Answer: C

Rationale: Enzymes are proteins that catalyze biochemical reactions.

Pseudostratified ciliated columnar epithelium is found lining most of the

A. digestive tract B. blood vessels C. respiratory tract D. cranial cavity

Correct Answer: C

Rationale: Pseudostratified ciliated columnar epithelium lines the respiratory tract, moving mucus with cilia.

Identify the type of connective tissue cushions organs, stores energy and provides insulation.

A. Adipose tissue B. Areolar tissue C. Dense connective D. Reticular connective

Correct Answer: A

Rationale: Adipose tissue cushions organs, insulates, and stores energy as fat.

Identify the type of muscle tissue(s) that is(are) primarily under voluntary (conscious) control.

A. Smooth muscle B. Cardiac muscle C. Skeletal muscle D. Skeletal and smooth muscle

Correct Answer: C

Rationale: Skeletal muscle is voluntary; smooth and cardiac are involuntary.

Identify the extracellular junction that ensures a synchronized contraction in smooth and cardiac muscle.

A. tight junction B. gap junction C. adhesion junction D. interstate junction

Correct Answer: B

Rationale: Gap junctions synchronize contractions by passing ions in cardiac and smooth muscle.

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