ATI RN
Cells and Tissues Multiple Choice Questions Questions
Question 1 of 5
Molecules composed only of hydrogen and carbon are called:
Correct Answer: D
Rationale: Hydrocarbons are organic molecules with only carbon and hydrogen, unlike carbohydrates which include oxygen.
Question 2 of 5
Endoplasmic reticulum with attached ribosomes is called:
Correct Answer: D
Rationale: Rough ER has ribosomes for protein synthesis; smooth ER lacks them.
Question 3 of 5
The 'backbone' of DNA consists of repetitive sequences of phosphate and:
Correct Answer: B
Rationale: DNA's backbone is alternating phosphate and deoxyribose sugar units.
Question 4 of 5
An example of a holocrine gland would be a:
Correct Answer: D
Rationale: Sebaceous glands are holocrine, releasing entire cells with secretion; others are merocrine.
Question 5 of 5
Intercalated discs are found in:
Correct Answer: A
Rationale: Intercalated discs are unique to cardiac muscle, aiding synchronized contractions.