NUMS Mdcat 2022 | Solved with Explanation | mosaicbro.com

NUMS Mdcat 2022 | Solved with Explanation

7 of 157 questions (Page 2 of 23)

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8 Why is the plasma membrane asymmetrical?
Correct Answer: C
Explanation: Asymmetry arises from differing lipid/protein compositions on each side.
9 Cell membranes contain ______ for material transport:
Correct Answer: A
Explanation: Lipids and proteins facilitate transport mechanisms.
10 The ______ part of the plasma membrane controls fluidity:
Correct Answer: C
Explanation: Lipids (e.g., cholesterol) maintain membrane fluidity.
11 A group of ribosomes on mRNA is called a polysome, controlled by:
Correct Answer: B
Explanation: Magnesium ions stabilize ribosome-mRNA binding.
12 An automatic, involuntary response to change is called:
Correct Answer: A
Explanation: Reflexes are rapid, involuntary responses.
13 Resting membrane potential measures:
Correct Answer: B
Explanation: Neurons maintain a resting potential of ~-70 mV.
14 Touch receptors are:
Correct Answer: C
Explanation: Meissner's corpuscles detect light touch.
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