Nokea
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.
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Which type of fat can cause heart disease if consumed in high quantities?
- A. carbohydrates
- B. saturated
- C. calories
- D. unsaturated
Correct Answer: B
Rationale: Saturated fats, when consumed excessively, can increase cholesterol levels, leading to heart disease.
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.
The cells of the proximal convoluted tubule are specialised to absorb compounds back into the circulatory system. In what way?
- A. They have foot processes which wrap around the blood vessels
- B. They have pores to allow compounds through
- C. They have microvilli to increase surface area
- D. They have cilia to help the filtrate move through the tube
Correct Answer: C
Rationale: Microvilli increase the surface area for reabsorption in the proximal convoluted tubule.
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.
Teeth adapted to shear food are:
- A. premolars
- B. canines
- C. incisors
- D. molars
Correct Answer: C
Rationale: Incisors are sharp-edged teeth designed for cutting or shearing food.