ATI RN
Exam Questions on Cells Tissues and Organs Questions
Question 1 of 5
Survival of plants in terrestrial environment has been made possible by the presence of
Correct Answer: B
Rationale: Xylem and phloem are the complex permanent tissues called vascular bundle which are present in higher plants and help to survive without water in terrestrial environment.
Question 2 of 5
When a mast cell reacts to an irritation, which of the following chemicals does it release?
Correct Answer: B
Rationale: Mast cells release histamine, triggering inflammation and allergic responses.
Question 3 of 5
Which is not a component of a nucleic acid?
Correct Answer: D
Rationale: Nucleic acids (DNA/RNA) include a sugar, phosphate, and bases (purine/pyrimidine), not glycerol (found in lipids).
Question 4 of 5
Which of the following is classified as a disaccharide?
Correct Answer: D
Rationale: Lactose is a disaccharide (glucose + galactose); others are monosaccharides.
Question 5 of 5
The primary function of mitochondria is the:
Correct Answer: C
Rationale: Mitochondria produce ATP via oxidative phosphorylation in cellular respiration.