Choose the incorrect statement regarding cells:

1. Mycoplasma, the smallest cell, is only 0.3 μm in length, while bacteria could be 3 to 5 μm.
2. Hemoglobin-associated human cells are about 7μm in diameter.
3. The shape of the cell may not vary with the function they perform.
4. Nerve cells are longest cells.
Subtopic:  Introduction to Cell |
 84%
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Choose incorrect statement

1. Leeuwenhoek first saw and described a living cell
2. Robert Brown discovered cell
3. Electron microscope revealed all the structural details of cell
4. A large cell has a higher volume: surface ratio than a smaller cell 
Subtopic:  Introduction to Cell |
 84%
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Cell is the fundamental structural and functional unit of all living organisms because:

1. Anything less than a complete structure of a cell does not ensure independent living.
2. The metabolic reactions can only occur inside a living cell.
3. Nucleic acids present in the cells ensure living state.
4. The membrane bound organelles cause differentiation for proper functioning.

Subtopic:  Introduction to Cell |
 79%
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Identify the cell organelles labelled as A, B, C and D. Mark the correct option with respect to organelle and its function.

1. A - Major site for synthesis of lipid.
2. B - Performs the function of packaging materials, to be delivered to only intracellular targets.
3. C - Sites of anaerobic respiration.
4. D - Main arena of cellular activities 
Subtopic:  Introduction to Cell |
 67%
From NCERT
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