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Question

What is the simplest type of transport?


A

Active transport

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B

Passive transport

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C

Diffusion

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D

Faciliated Diffusion

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Solution

The correct option is B

Passive transport


The correct option is B.

Explanation of correct answer:

  1. Simple diffusion is a type of passive transport.
  2. It is from higher concentration to lower concentration and does not require energy.

Explanation of incorrect option:

Option A:

  1. In cellular biology, active transport is the movement of molecules against the concentration gradient across a cell membrane from an area of lower concentration to a region of greater concentration.
  2. Cellular energy is needed for active transport in order to achieve this movement.

Option C:

  1. Transport that is done passively is called diffusion.
  2. Until the concentration is the same throughout space, a single substance has a tendency to travel from an area of high concentration to an area of low concentration.

Option D:

  1. The passive transport of molecules down the concentration gradient is known as facilitated diffusion.
  2. It is a selective process, meaning that only specific molecules and ions can pass through the membrane.
  3. However, it blocks the passage of other molecules across the membrane.

Final answer: Passive Transport is the simplest type of transport.


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