Nokea
Homeostasis is best described as:
- A. The process by which we change our external environment so that we are comfortable
- B. A process that uses hormones to adjust our bodily functions
- C. A process by which nerves and hormones operate together to keep the internal environment stable no matter what the external conditions
- D. A process by which the nerves make us respond to danger
Correct Answer: C
Rationale: Homeostasis maintains internal stability using nerves and hormones despite external changes.
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Sweating during exercise will cause loss of water to the body. It is important to replace the water or could set in:
- A. leukemia
- B. dehydration
- C. heart disease
- D. diabetes
Correct Answer: B
Rationale: Dehydration occurs when water loss exceeds intake, a common risk during exercise.
Cheek teeth are-
- A. Incisors and Canines
- B. Canines and Premolars
- C. Premolars and Molar
- D. Canines and Molars
Correct Answer: C
Rationale: Cheek teeth refer to premolars and molars, located in the back of the mouth for grinding food.
In human body, the digestion of protein begins in which of the following organs?
- A. Liver
- B. Mouth
- C. Small intestine
- D. Stomach
Correct Answer: D
Rationale: The digestion of protein begins in the stomach, where pepsin, activated by hydrochloric acid, starts breaking down proteins into smaller peptides.
Which of the following is not a source of protein?
- A. broccoli
- B. red meat
- C. beans
- D. rice
Correct Answer: A
Rationale: Broccoli contains some protein but is primarily a source of vitamins and fiber, not a primary protein source like meat or beans.
What happens during defecation?
- A. Food is chewed
- B. Nutrients are absorbed
- C. Chyme is formed
- D. Undigested waste is expelled
Correct Answer: D
Rationale: Defecation is the final stage where undigested waste (feces) is eliminated via the anus.