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Omnis cellula-e cellula' i.e., new cells...

Omnis cellula-e cellula' i.e., new cells arise from prexisting cells , this statement was given by

A

Schleiden and Schwann

B

Rudolf Virchow

C

Robert Brown

D

Robert Hooke.

Text Solution

Verified by Experts

The correct Answer is:
B
Rudolf Virchow modified the cell theory and gave the concept of 'omnis cellula-e cellula' - means new cells develop by division of the pre-existing cells. This is called theory of cell lineage or common ancestry.
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Knowledge Check

  • For a redox reaction to proceed in a cell, the e.m.f. must be

    A
    positive
    B
    negative
    C
    zero
    D
    fixed

  • Deduce from the following E^@ values of half cells , what combination of two half cells would result in a cell with largest potential : (i) A^(3-) rarr A^(2-) + e , E^@=1.5 V (ii) B^(2+) +e rarrB^+ ,E^@ =-2.1V (iii) C^(2+)+e rarrC^+,E^@=+0.5V (iv) DrarrD^2 +2e,E^@=-1.5V

    A
    `(i) and (iii)`
    B
    `(i) and (iv)`
    C
    `(ii) and (iv)`
    D
    `(iii) and (iv)`

  • Deduce from the following E^@ values of half cells , what combination of two half cells would result in a cell with largest potential : (i) A^(3-) rarr A^(2-) + e^- , E^@=1.5 V (ii) B^(2+) +e^- rarrB^+ ,E^@ =-2.1V (iii) C^(2+)+e^- rarrC^+,E^@=+0.5V (iv) DrarrD^2 +2e^-,E^@=-1.5V

    A
    `(i) and (iii)`
    B
    `(i) and (iv)`
    C
    `(ii) and (iv)`
    D
    `(iii) and (iv)`

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