Nokea
Negative feedback can be described as...?
- A. As the concentration of the product increases it inhibits stimulation and consequently decreases product synthesis
- B. As the concentration of the product decreases it decreases stimulation and consequently further decreases product synthesis
- C. Product concentration has no effect on stimulation - another control mechanism is put in place to change rate of production
- D. As the concentration of the product increases it increases stimulation and consequently further increases product synthesis
Correct Answer: A
Rationale: Negative feedback reduces the stimulus as the product accumulates, maintaining homeostasis.
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Fungiform papillae appear as red spots on tongue surface because:
- A. Secondary papillae are covered by the same epithelial cap
- B. Fungiform papillae have no taste buds.
- C. Covered by pseudostratified epith.
- D. Its connective tissue contains Von Ebner's glands
Correct Answer: A
Rationale: Fungiform papillae appear red due to their thin epithelium and rich vascularity in the connective tissue, not because of secondary papillae structure.
The kidneys, skin, and lungs are each a part of the system.
- A. integumentary
- B. respiratory
- C. excretory
- D. digestive
Correct Answer: C
Rationale: The kidneys, skin, and lungs are all part of the excretory system, removing various wastes.
How should the student explain the normal function of the pancreas in the process of digestion?
- A. Produces enzymes for digestion
- B. Stores bile
- C. Secretes gastrin
- D. Absorbs nutrients
Correct Answer: A
Rationale: The pancreas produces digestive enzymes (e.g., trypsin, amylase) for breaking down proteins, carbohydrates, and fats.
After digestion, Protein is converted into ?
- A. Glucose
- B. Sucrose
- C. Fat
- D. Amino Acid
Correct Answer: D
Rationale: Proteins are broken down into amino acids during digestion, primarily by enzymes like pepsin in the stomach and trypsin in the small intestine, for absorption and use by the body.
Which of the following enzymes formed in the pancreas aids in protein digestion?
- A. Amylase
- B. Lipase
- C. Trypsinogen
- D. Trypsin
Correct Answer: D
Rationale: Trypsin, activated from trypsinogen, is a pancreatic enzyme that digests proteins.