Nokea
How is food processed to distribute nutrients to the body's cells?
- A. Ingested, digested, absorbed, assimilated
- B. Absorbed directly from the mouth
- C. Excreted immediately
- D. Stored in the stomach indefinitely
Correct Answer: A
Rationale: Food is ingested (taken in), digested (broken down), absorbed (taken into blood), and assimilated (distributed to cells).
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Which of the following would MOST directly affect the operations of the digestive system?
- A. osteoporosis
- B. liver damage
- C. heart attack
- D. kidney failure
Correct Answer: B
Rationale: Liver damage directly impacts digestion by reducing bile production, essential for fat breakdown.
By which process, most of glucose and amino acids are absorbed in the small intestine?
- A. Active transport
- B. Passive transport
- C. Osmosis
- D. Selective absorption
Correct Answer: A
Rationale: Glucose and amino acids are primarily absorbed via active transport in the small intestine.
Which one differ from the category of other three-
- A. Gastrin
- B. Glucagon
- C. Secretin
- D. Ptyalin
Correct Answer: D
Rationale: Ptyalin is an enzyme, while the others are hormones.
Food tests were carried out on four different substances. Which substance contained both protein and reducing sugar?
- A. substance A
- B. substance B
- C. substance C
- D. substance D
Correct Answer: A
Rationale: Substances testing positive for both the biuret test (protein) and Benedict's test (reducing sugar) indicate the presence of both protein and reducing sugars.
Match each term with the correct description: organ that holds urine until it leaves the body
- A. urethra
- B. urinary system
- C. bladder
- D. kidneys
Correct Answer: C
Rationale: The bladder stores urine until it is excreted.