ATI RN
Multiple Choice Questions on Cells Tissues and Organs Questions
Question 1 of 5
The principal solvent in the body is:
Correct Answer: B
Rationale: Water is the universal solvent in biological systems, making up ~60% of body weight.
Question 2 of 5
During protein synthesis, amino acids become linked together in a linear chain by:
Correct Answer: B
Rationale: Peptide bonds (covalent) link amino acids into polypeptides during protein synthesis.
Question 3 of 5
A transfer RNA has the anticodon sequence UAC. With which codon in the following messenger RNA will it pair?
Correct Answer: D
Rationale: tRNA anticodon UAC pairs with mRNA codon AUG (complementary base pairing).
Question 4 of 5
An infection would most likely increase activity in:
Correct Answer: D
Rationale: Reticular tissue (in lymph nodes/spleen) supports immune cells active during infections.
Question 5 of 5
What term describes how the plasma membrane controls what enters and exits the cell?
Correct Answer: A
Rationale: The plasma membrane is semipermeable, allowing selective passage of substances.