Porins are proteins that form large pores in the outer membranes of which of the following?

  • A
    Mitochondria
  • B
    Plastids
  • C
    Some bacteria
  • D
    All of the above

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Similar Questions

Peroxisomes are rich in

Match Column $I$ with Column $II$ and choose the correct option.
Column $I$Column $II$
$A$. Centrioles$I$. Non-membrane bound organelle which helps in cell division
$B$. Fimbriae$II$. Special structure of bacteria which help them to attach to rocks in streams
$C$. Endomembrane system$III$. Includes those organelles whose functions are coordinated
$D$. Mitochondria$IV$. Divide by fission and site of aerobic respiration

Assertion $A$: Organelles in eukaryotic cells are membrane-bound.
Reason $R$: Organelles in prokaryotic cells are non-membrane-bound.
Which option is correct for Assertion $A$ and Reason $R$?

Which of the following is an endomembrane system component?

Microtubules are absent in

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