Cell :The Building Block of Life
CBSE · Class 9 · Science
Most important questions from Cell :The Building Block of Life for CBSE Class 9 Science board exam 2026. MCQs, short answer, and long answer questions with marks.
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Which is the correct thickness range of the cell membrane?
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7 to 10 nanometres
The cell membrane is extremely thin, about 7 to 10 nanometres thick.
Which model explains the structure of the cell membrane?
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Fluid-mosaic model
The arrangement of lipids and proteins in the cell membrane is explained by the fluid-mosaic model.
Which type of membrane does the cell membrane have?
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Selectively permeable
The cell membrane allows some substances to pass through while blocking others, so it is selectively permeable.
Which of the following is present in plant, fungi, and bacterial cells but absent in animal cells?
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Cell wall
Cell walls are found in plant, fungi, and bacterial cells, but not in animal cells.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
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