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Cell is the basic unit of life.Discuss in brief.

Class 11 Biology
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Multicellular organisms have division of labour. Explain.

Class 11 Biology
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What are the characteristics of prokaryotic cells?

Class 11 Biology
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Name two cell-organelles that are double membrane bound. What are the characteristics of these two organelles? State their functions and draw labelled diagrams of both?

Class 11 Biology
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How do neutral solutes move across the plasma membrane? Can the polar molecules also move across it in the same way? If not, then how are these transported across the membrane?

Class 11 Biology
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What is a mesosome in a prokaryotic cell? Mention the functions that it performs.

Class 11 Biology
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Which of the following is correct? (a) Cells of all living organisms have a nucleus. (b) Both animal and plant cells have a well defined cell wall. (c) In prokaryotes, there are no membrane bound organelles. (d) Cells are formed de novo from abiotic

Class 11 Biology
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Match the following

Class 11 Biology
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New cells generate from (a) bacterial fermentation (b) regeneration of old cells (c) pre-existing cells (d) abiotic materials.

Class 11 Biology
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Which of the following is not correct? (a) Robert Brown discovered the cell. (b) Schleiden and Schwann formulated the cell theory. (c) Virchow explained that cells are formed from pre-existing cells. (d) A unicellular organism carries out its life activities within a single cell.

Class 11 Biology
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