Q. What is the main purpose of the feedback mechanisms in homeostasis?
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A.
To amplify changes
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B.
To maintain stability
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C.
To initiate responses
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D.
To increase metabolic rate
Solution
Feedback mechanisms, such as negative feedback, help maintain stability in the body's internal environment.
Correct Answer:
B
— To maintain stability
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Q. What is the primary function of the liver in metabolism?
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A.
Storage of glucose
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B.
Production of bile
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C.
Detoxification of substances
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D.
All of the above
Solution
The liver plays multiple roles in metabolism, including storage of glucose, production of bile, and detoxification of harmful substances.
Correct Answer:
D
— All of the above
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Q. What is the primary role of the hypothalamus in homeostasis?
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A.
Regulating heart rate
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B.
Controlling body temperature
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C.
Managing blood glucose levels
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D.
Stimulating digestion
Solution
The hypothalamus plays a key role in regulating body temperature and maintaining homeostasis through various mechanisms.
Correct Answer:
B
— Controlling body temperature
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Q. What is the role of insulin in the body?
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A.
Increase blood glucose levels
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B.
Decrease blood glucose levels
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C.
Stimulate protein synthesis
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D.
Promote fat breakdown
Solution
Insulin is a hormone that decreases blood glucose levels by facilitating the uptake of glucose into cells.
Correct Answer:
B
— Decrease blood glucose levels
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Q. Which of the following is a primary function of the respiratory system?
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A.
Transporting nutrients
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B.
Gas exchange
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C.
Hormone production
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D.
Waste elimination
Solution
The primary function of the respiratory system is gas exchange, allowing oxygen to enter the blood and carbon dioxide to be expelled.
Correct Answer:
B
— Gas exchange
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Q. Which of the following is NOT a function of the endocrine system?
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A.
Regulating metabolism
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B.
Controlling growth and development
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C.
Facilitating voluntary muscle movement
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D.
Maintaining homeostasis
Solution
The endocrine system regulates various bodily functions, but it does not control voluntary muscle movement, which is managed by the nervous system.
Correct Answer:
C
— Facilitating voluntary muscle movement
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Q. Which organ system is primarily responsible for the regulation of body temperature?
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A.
Nervous system
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B.
Endocrine system
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C.
Integumentary system
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D.
Muscular system
Solution
The integumentary system, including the skin, plays a crucial role in regulating body temperature through mechanisms such as sweating and blood flow.
Correct Answer:
C
— Integumentary system
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Q. Which part of the nervous system is responsible for the 'rest and digest' response?
-
A.
Sympathetic nervous system
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B.
Parasympathetic nervous system
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C.
Central nervous system
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D.
Somatic nervous system
Solution
The parasympathetic nervous system is responsible for the 'rest and digest' response, promoting relaxation and energy conservation.
Correct Answer:
B
— Parasympathetic nervous system
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