Nokea
Which vitamin is produced by intestinal bacteria?
- A. B12
- B. A
- C. C
- D. D
Correct Answer: A
Rationale: Intestinal bacteria synthesize vitamin B12, which is absorbed in the ileum with intrinsic factor. Vitamins A, C, and D are not produced by gut bacteria.
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Posterior part of soft palate, hangs down in pharynx, called-
- A. Palatine
- B. Tonsils
- C. Velum Palati
- D. Jacobson's organ
Correct Answer: C
Rationale: The velum palati (uvula) is the posterior part of the soft palate that hangs down in the pharynx.
is the instant source of energy.
- A. Glucose
- B. Fructose
- C. Galactose
- D. Maltose
Correct Answer: A
Rationale: Glucose is the body's primary and most immediate source of energy.
Amylase is an example of a(n)
- A. accessory organ
- B. carbohydrate
- C. enzyme
- D. vitamin
Correct Answer: C
Rationale: Amylase is an enzyme that breaks down starches into sugars.
Which of the following is not a function of saliva?
- A. to initiate protein digestion
- B. to aid in cleansing the teeth
- C. to lubricate the pharynx
- D. to assist in formation of the bolus
Correct Answer: A
Rationale: Saliva contains amylase for carbohydrate digestion, but it does not initiate protein digestion.
What is the role of mucus secreted by the stomach?
- A. To protect the lining of the stomach
- B. To digest fats
- C. To kill the germs in the food
- D. To digest the proteins
Correct Answer: A
Rationale: Mucus or Gastric mucus is a gel barrier secreted by epithelial cells & glandular cells in the stomach wall. It protects the inner lining of the stomach from HCl.