ATI RN
Exam Questions on Cells Tissues and Organs Questions
Question 1 of 5
While doing work and running, you move your organs like hands, legs etc. Which among the following is correct?
Correct Answer: D
Rationale: Skeletal muscles or striated muscles are present in the body wall and the limbs, i.e biceps and triceps of arms, legs whose contraction and relaxation are in the control of organism, called voluntary muscles attached to the bones by tendons. When they contract, the tendon moves the bone for the movement of limbs.
Question 2 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 3 of 5
Under the microscope, a tissue specimen shows cells located in spaces scattered in a transparent background. This is probably
Correct Answer: D
Rationale: Hyaline cartilage has cells (chondrocytes) in lacunae scattered within a transparent matrix, unlike the fibrous structure of tendons or loose connective tissue.
Question 4 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 5 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).