-
A.
The process of cell division
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B.
The maintenance of a stable internal environment
-
C.
The growth of tissues
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D.
The response to external stimuli
Solution
Homeostasis refers to the maintenance of a stable internal environment despite changes in external conditions.
Correct Answer:
B
— The maintenance of a stable internal environment
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Q. What role does the hypothalamus play in the endocrine system?
-
A.
It produces insulin
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B.
It regulates body temperature
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C.
It controls the pituitary gland
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D.
It filters blood
Solution
The hypothalamus controls the pituitary gland, which in turn regulates various endocrine functions.
Correct Answer:
C
— It controls the pituitary gland
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Q. Which electrolyte is most important for muscle contraction?
-
A.
Sodium
-
B.
Potassium
-
C.
Calcium
-
D.
Magnesium
Solution
Calcium is crucial for muscle contraction as it interacts with proteins in muscle cells to enable contraction.
Correct Answer:
C
— Calcium
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Q. Which organ is primarily responsible for filtering blood and producing urine?
-
A.
Liver
-
B.
Heart
-
C.
Kidney
-
D.
Lungs
Solution
The kidneys filter blood and produce urine as part of the body's waste management system.
Correct Answer:
C
— Kidney
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