ATI RN
Exam Questions on Cells Tissues and Organs Questions
Question 1 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 2 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 3 of 5
The primary function of mitochondria is the:
Correct Answer: C
Rationale: Mitochondria produce ATP via oxidative phosphorylation in cellular respiration.
Question 4 of 5
If one strand of a DNA molecule has the base sequence ACGGCAC, the other strand will have the sequence:
Correct Answer: D
Rationale: Complementary strand: TGCCGTG (A-T, C-G pairing); UGCCGUG is RNA, not DNA.
Question 5 of 5
Which statement best describes connective tissue?
Correct Answer: C
Rationale: Connective tissue arises from mesoderm and has abundant extracellular matrix for support.