Nokea
Nutrients like calcium and zinc are often referred to as
- A. proteins
- B. minerals
- C. fats
- D. vitamins
Correct Answer: B
Rationale: Calcium and zinc are classified as minerals, essential inorganic nutrients.
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Striated ducts, the following is true except:
- A. Lined by ion transporting cells
- B. Contain basal basophilic granules
- C. Contain basal acidophilic granules
- D. Present in salivary gland duct system.
Correct Answer: B
Rationale: Striated ducts have basal acidophilic striations due to mitochondria, not basophilic granules.
Mucus is secreted by the :-
- A. Stomach
- B. Duodenum
- C. Large intestine
- D. All of the above
Correct Answer: D
Rationale: Mucus is secreted by the stomach, duodenum, and large intestine for protection and lubrication.
Which of the given enzymes is responsible for the digestion of milk protein?
- A. Erepsin
- B. Trypsin
- C. Pepsin
- D. Rennin
Correct Answer: D
Rationale: Rennin is responsible for the digestion of milk protein. Rennin is present in the human body in its inactive form called prorenin. When we consume milk, it reacts with the hydrochloric acid present in the stomach. Hydrochloric acid activates the inert prorenin and converts it into active Rennin.
Carboxypeptidase requires _______ for its activity
- A. Copper
- B. Niacin
- C. Iron
- D. Zn
Correct Answer: D
Rationale: Carboxypeptidase is a zinc-dependent enzyme that breaks down proteins into amino acids.
The juxtaglomerular cells secrete what hormone?
- A. Renin
- B. ADH
- C. Angiotensin
- D. Adrenalin
Correct Answer: A
Rationale: Juxtaglomerular cells secrete renin to regulate blood pressure and filtration.