Nokea
Dental formula of adult human is -
- A. 2123/2123
- B. 2123/2122
- C. 2124/2124
- D. 2132/2132
Correct Answer: D
Rationale: The dental formula of an adult human is 2132/2132, representing 2 incisors, 1 canine, 3 premolars, and 2 molars per quadrant.
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Substances which are not related with hepatic portal circulation :-
- A. Amino acid
- B. Fatty acid
- C. Glucose
- D. Electrolytes
Correct Answer: B
Rationale: Fatty acids are absorbed into lacteals and enter the lymphatic system, not the hepatic portal vein.
The small intestine is held to the posterior abdominal wall by the:
- A. mesentery
- B. falciform ligament
- C. greater omentum
- D. lesser omentum
Correct Answer: A
Rationale: The mesentery supports and anchors the small intestine to the posterior abdominal wall.
Which element in the molecule of urea shows that it is formed from amino acids and not from glucose?
- A. carbon
- B. hydrogen
- C. nitrogen
- D. oxygen
Correct Answer: C
Rationale: Nitrogen is a key component of amino acids and is retained in urea during deamination.
What happens during the gastric phase of digestion?
- A. Food is ingested
- B. Stomach mixes food with gastric juice to form chyme
- C. Nutrients are absorbed in the intestine
- D. Bile emulsifies fats
Correct Answer: B
Rationale: The gastric phase involves the stomach churning food with gastric secretions (e.g., HCl, pepsin) to form chyme.
Which of the following vitamins helps in the maturation of red blood cells?
- A. Vitamin D.
- B. Vitamin A.
- C. Vitamin B12.
- D. Vitamin B.
Correct Answer: C
Rationale: Vitamin B12 is essential for the maturation of red blood cells and DNA synthesis.