Cell Structure and Function — Important Questions
Telangana Open School (TOSS) · Class 12 · Biology
47 important questions from Cell Structure and Function for Telangana Open School (TOSS) Class 12 Biology, with answers. Written for the board exams 2027.
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Important Questions from Cell Structure and Function
What does the term 'protoplasm' include?
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Cytoplasm and nucleus
Protoplasm is the living content of a cell, consisting of both cytoplasm and nucleus, which carry out essential life processes.
Which of the following organisms lacks a well-defined nucleus?
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Bacteria
Bacteria are prokaryotes and lack a well-defined nucleus. Their DNA floats freely in the cytoplasm.
What is the main function of the plasma membrane?
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To regulate entry and exit of substances
The plasma membrane is selectively permeable and controls the movement of substances into and out of the cell.
Which model explains the structure of the plasma membrane?
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Fluid mosaic model
The fluid mosaic model, proposed by Singer and Nicolson in 1972, is widely accepted and describes the plasma membrane as a lipid bilayer with embedded proteins.
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