Which type of epithelial tissue is specialized for

ATI RN

ATI RN Test Bank

Which type of epithelial tissue is specialized for rapid diffusion of gases and filtration in the lungs and kidneys?

A. Simple squamous B. Stratified cuboidal C. Stratified squamous D. Transitional epithelium

Correct Answer: A

Rationale: Simple squamous epithelium is thin and ideal for diffusion and filtration.

What is the primary function of goblet cells in the respiratory tract?

A. Contraction B. Secretion of enzymes C. Transmission of nerve impulses D. Production of mucus for trapping foreign particles

Correct Answer: D

Rationale: Goblet cells produce mucus to trap particles in the respiratory tract.

What is the primary function of the cell membrane?

A. Synthesizing proteins B. Storing genetic material C. Providing structural support D. Regulating the passage of substances in and out of the cell

Correct Answer: D

Rationale: The cell membrane controls what enters and exits the cell, maintaining homeostasis.

Which molecule serves as a common second messenger in many intracellular signaling pathways?

A. DNA B. RNA C. cAMP (cyclic adenosine monophosphate) D. ATP (adenosine triphosphate)

Correct Answer: C

Rationale: cAMP acts as a second messenger, amplifying signals in many pathways.

Which type of cellular transport requires energy and involves the movement of substances using transport proteins?

A. Passive transport B. Diffusion C. Facilitated diffusion D. Active transport

Correct Answer: D

Rationale: Active transport uses energy and transport proteins to move substances.

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