MCQ Collection
Pakistan MCQs
Practice Pakistan questions with answers and explanations.
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Correct Answer: B. Synthesis and processing of secreted and membrane proteins
Explanation:
Rough ER has ribosomes attached to its surface.
It folds and modifies proteins entering the endomembrane system.
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Correct Answer: C. Phospholipid bilayer
Explanation:
Phospholipids form a bilayer with hydrophilic heads and hydrophobic tails.
Proteins and other molecules are embedded within it.
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Correct Answer: C. Synthesis and processing of secreted and membrane proteins
Explanation:
Rough ER has ribosomes attached to its surface.
It folds and modifies proteins entering the endomembrane system.
Choose an option to check your answer.
Correct Answer: D. Phospholipid bilayer
Explanation:
Phospholipids form a bilayer with hydrophilic heads and hydrophobic tails.
Proteins and other molecules are embedded within it.
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Correct Answer: D. Lipid synthesis and detoxification
Explanation:
Smooth ER lacks ribosomes.
It synthesizes lipids and helps detoxify chemicals.
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Correct Answer: A. The dynamic arrangement of lipids and proteins in membranes
Explanation:
Membrane components can move laterally within the bilayer.
The membrane is flexible rather than rigid.
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Correct Answer: A. Lipid synthesis and detoxification
Explanation:
Smooth ER lacks ribosomes.
It synthesizes lipids and helps detoxify chemicals.
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Correct Answer: B. The dynamic arrangement of lipids and proteins in membranes
Explanation:
Membrane components can move laterally within the bilayer.
The membrane is flexible rather than rigid.
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Correct Answer: B. Lipid synthesis and detoxification
Explanation:
Smooth ER lacks ribosomes.
It synthesizes lipids and helps detoxify chemicals.
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Correct Answer: C. The dynamic arrangement of lipids and proteins in membranes
Explanation:
Membrane components can move laterally within the bilayer.
The membrane is flexible rather than rigid.
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Correct Answer: C. Modification, sorting, and packaging of proteins and lipids
Explanation:
The Golgi receives materials from the ER.
It modifies and directs them to their destinations.
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Correct Answer: D. Nucleus
Explanation:
The nucleus stores chromosomes in eukaryotic cells.
It also regulates gene expression and cell activities.
