ATI RN
Questions on Cells Tissues and Organs Questions
Question 1 of 5
The osmolality of
Correct Answer: A
Rationale: Osmolality affects freezing point (colligative property); ICF and ECF osmolality are equal (~290 mOsm/kg).
Question 2 of 5
A patient with an uncompensated respiratory alkalosis may have
Correct Answer: C
Rationale: Hyperventilation (e.g., altitude) lowers PCO2, raising pH and causing tetany; pH > 7.45 in uncompensated cases.
Question 3 of 5
A raised level of calcium in the blood (hypercalcaemia)
Correct Answer: D
Rationale: Hypercalcemia (e.g., from hyperparathyroidism) increases urinary stone risk; it reduces excitability.
Question 4 of 5
Which is not a function of epidermis?
Correct Answer: C
Rationale: Epidermis is the outermost layer of cells in a plant which protect the plant from injury, adverse conditions, to reduce water loss, in gaseous exchange and transpiration with the help of stomata. Xylem helps in Conduction of water.
Question 5 of 5
The dead element present in the phloem is
Correct Answer: B
Rationale: Phloem is a complex permanent tissue to conduct organic food from leaves to different parts of plants. Phloem fibres are dead.