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Which of the following is a direct result of antidiuretic hormone?

A.

Increased urine acidity

B.

Increased urine volume

C.

Increased urine salinity

D.

Decreased urine volume

Answer and Explanation

The Correct Answer is D

A. Increased urine acidity: Antidiuretic hormone (ADH) primarily affects water reabsorption in the kidneys, not urine acidity. It does not have a direct effect on the acidity of the urine.

 

B. Increased urine volume: ADH works to conserve water by increasing water reabsorption in the kidneys, which decreases urine volume.

 

C. Increased urine salinity: While ADH does increase water reabsorption, which could concentrate the urine, its direct action is on water retention, not specifically on increasing urine salinity. 

 

D. Decreased urine volume: ADH promotes water reabsorption in the kidneys, leading to decreased urine output. This is the direct and correct result of ADH action.


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View Related questions

Correct Answer is C

Explanation

A. Lactose; lactase: Lactase is the enzyme that breaks down lactose, not the other way around.

B. Lipases; micelles: Lipases break down lipids (fats) into fatty acids and glycerol, not micelles. Micelles are formed as part of the digestion process but are not the substrate for lipases.

C. Peptidases; proteins: Peptidases (or proteases) break down proteins into smaller peptides and amino acids. This is the correct answer.

D. Lactase; glucose: Lactase breaks down lactose into glucose and galactose, not just glucose.

Correct Answer is D

Explanation

A. Metabolic water; cutaneous transpiration: Metabolic water refers to the water produced during metabolic processes within the body. However, most body water intake comes from drinking fluids, not metabolic water.

B. Drinking; cutaneous transpiration and expired air: While drinking is indeed the main source of water intake, the greatest loss of water from the body is through urine, not cutaneous transpiration and expired air.

C. Drinking; radiation: While drinking is the primary source of water intake, radiation is not a significant way the body loses water.

D. Drinking; urine: Drinking fluids is the main source of water intake, and urine excretion is the primary way the body loses water.

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