Question

Which of the following statement is not true?

In passive transport no energy is needed and in active transport
energy is required.
In passive transport materials are moving with the concentration
gradient and in active transport they are moving against the
concentration gradient.
In passive transport smaller molecules such as carbon dioxide are
transported and in active transport larger molecules such as
complex sugars are transported.
In passive transport materials move from a low concentration to a
high concentration and in active transport materials move from a
high concentration to a low concentration.

Answer 1

Passive transport moves materials from high to low concentration without requiring energy, while active transport moves materials from low to high concentration with the use of energy.

The statement 'In passive transport materials move from a low concentration to a high concentration and in active transport materials move from a high concentration to a low concentration' is not true.

In passive transport, materials move from an area of high concentration to an area of low concentration without the need for energy.

This occurs down the concentration gradient. Examples of passive transport include diffusion and osmosis.

In active transport, energy is required to move materials against the concentration gradient, from an area of low concentration to an area of high concentration.

This process involves the use of ATP and membrane proteins.