He concluded that they could represent three parts of a cell. Which parts could they represent?
A
P - Cytoplasm , Q - Nucleus , R - Cell wall
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B
P - Cell membrane, Q - Cytoplasm, R - Nucleus
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C
P - Cell wall , Q - Cytoplasm, R - Nucleus
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D
P - Cell membrane, Q - Cell wall, R - Cytoplasm
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Solution
The correct option is B P - Cell membrane, Q - Cytoplasm, R - Nucleus Cell membrane is a selectively permeable membrane and allows only certain molecules to pass through. Cytoplasm is a jelly-like substance. Nucleus is the brain of a cell and controls all the activities of the cell.