Ions have - Nurselytic

ATI RN

ATI RN Test Bank

Ions have:

A. only positive charges B. only negative charges C. either positive or negative charges D. no charge

Correct Answer: C

Rationale: Ions are charged (positive cations or negative anions) due to electron gain/loss.

The molecule to which an amino acid is attached preparatory to protein synthesis is:

A. ribosomal RNA B. messenger RNA C. transfer RNA D. viral RNA

Correct Answer: C

Rationale: tRNA carries amino acids to the ribosome, matching codons via anticodons.

An exocrine gland in which a portion of the secretory cell is discharged with the secretion is termed:

A. apocrine B. merocrine C. endocrine D. holocrine

Correct Answer: A

Rationale: Apocrine glands (e.g., mammary) release part of the cell with secretion; holocrine release whole cells.

Tissue fluid would most likely be found in:

A. loose connective tissue B. reticular tissue C. adipose tissue D. elastic tissue

Correct Answer: A

Rationale: Loose (areolar) connective tissue contains tissue fluid (interstitial fluid) between cells.

Describe the structure of the nuclear envelope.

A. It is double layered with pores. B. It is single layered and solid. C. It is double layered and solid. D. It is single layered with pores.

Correct Answer: A

Rationale: The nuclear envelope is a double membrane with pores for material exchange.

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