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are granular structures first observed u...

_________ are granular structures first observed under electron microscope as dense particles by _______ (1955).

A

Ribosomes, George Palade

B

Ribosomes, Perner

C

Lysosomes, de Duve

D

Peroxisomes, de Duve

Text Solution

Verified by Experts

The correct Answer is:
A
Ribosomes are granular structures which were discovered by Robinson and Brown (1953) in plant cell and by palade (1955) in animal cell. Palade (1955) also coined the term ribosomes hence, they are also called palade particles. Ribosomes occur in both prokaryotic and eukaryotic cells.
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Knowledge Check

  • (a) granular structure (b) first observed under the electron microscope as dense particles by Geprge Palade ( c ) composed of RNA and proteins not surrounded by any membrane Above given statements are true for which cell organelle?

    A
    Nucleolus
    B
    Ribosomes
    C
    Cristae
    D
    Chloroplast

  • Ribosomes were first observed under the EM as dense particles by

    A
    Robert Brown
    B
    Camillo Golgi
    C
    George Palade
    D
    T.O. Diener

  • Golgi apparatus was first seen under electron microscope by

    A
    Novikroff
    B
    Dalton and Felix
    C
    Rhodin
    D
    De Robertis and Franchi

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