Nokea
Ficks law, describes the effects of various factors on the rate of diffusion. Which statement is true?
- A. The smaller the difference in concentrations the greater the rate of diffusion
- B. The larger the surface area/volume ratio the greater the rate of diffusion
- C. The use of a Transporter Room (as seen in Star Trek) the greater the rate of diffusion
- D. The thicker the exchange surface the greater the rate of diffusion
Correct Answer: B
Rationale: Fick's law states that diffusion rate increases with a larger surface area, steeper concentration gradient, and thinner membrane.
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Brunner's glands are located in :
- A. Oesophagus
- B. Duodenum
- C. Intestine
- D. Stomach
Correct Answer: B
Rationale: Brunner's glands are specifically found in the duodenum.
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.
(Auerbach's) plexus found in:
- A. Muscularis externa
- B. Submucosa
- C. Mucosa
- D. Serosa
Correct Answer: A
Rationale: Auerbach's plexus is located between the circular and longitudinal layers of the muscularis externa, controlling gut motility.
The enzyme_________________________________ is made by the pancreas and breaks longer amino acid chains into short amino acid chains.
- A. secretin
- B. pepsin
- C. erepsins
- D. trypsin
Correct Answer: D
Rationale: Trypsin, secreted by the pancreas, breaks down larger polypeptides into shorter peptide chains during protein digestion.
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.