Nokea
Enzyme maltase in human gut acts on food at a pH of -
- A. More than 7 to change starch into maltose.
- B. Less than 7 to change starch into maltose.
- C. More than 7 to change maltose into glucose.
- D. Less than 7 to change maltose into glucose.
Correct Answer: C
Rationale: Maltase works in the small intestine (pH > 7) to convert maltose into glucose.
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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.
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.
Which of the following enzyme is secreted by pancreas -
- A. Maltase
- B. Trypsin
- C. Rennin
- D. Lactase
Correct Answer: B
Rationale: Trypsin, a proteolytic enzyme, is secreted by the pancreas.
Match each term with the correct description: produces enzymes
- A. rectum
- B. esophagus
- C. pancreas
- D. liver
Correct Answer: C
Rationale: The pancreas produces digestive enzymes that aid in breaking down food.
Match: Carbohydrate
- A. major source of energy composed of carbon, hydrogen, and oxygen
- B. composed of amino acids
- C. made of glycerol and fatty acids
- D. used for insulation
Correct Answer: A
Rationale: Carbohydrates serve as the body's primary energy source and consist of carbon, hydrogen, and oxygen atoms.