Read the following statements regarding porins and select the correct option given below:
$I$. Porins are transport proteins.
$II$. Channel proteins are a type of transport protein,which are usually gated.
$III$. Carrier protein binds the particular solute to be transported.
$IV$. Particular solute is delivered to the other side of the membrane by carrier proteins.

  • A
    $I, II$ and $III$
  • B
    $I, III$ and $IV$
  • C
    $I, II, III$ and $IV$
  • D
    $I$ and $IV$

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Similar Questions

Compare the following processes of transport and choose the correct option:
$S.no.$ Property Facilitated diffusion Active Transport Simple Diffusion
$I.$ Highly specific Yes Yes No
$II.$ Energy as $ATP$ No Yes No
$III.$ Saturation point reached when all carrier proteins are used Yes Yes No
$IV.$ Require transport proteins Yes Yes No

Which of the following processes requires membrane proteins?

Choose the correct sentences for diffusion:
$(1)$ In diffusion,molecules move in a random fashion.
$(2)$ Diffusion rates are affected by the gradient of concentration.
$(3)$ Diffusion is a slow process and is dependent on a 'living system'.
$(4)$ Movement by diffusion is passive.

State the characteristics of facilitated diffusion.

Which of the following types of transport are included in passive transport?

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