Question

Which of the following statements is true?

A.During active transport a material maybe move from an area of low concentration to an area of high concentration.
B. During passive transport energy is used to move materials against a concentration gradient.
C. During active transport water is pumped across a membrane to equalize the concentration of salts on both sides.
D. During passive transport osmosis allow salts to move from one side of the membrane to the other to equalize concentration on both sides.

Answer 1

During active transport a material perhaps move from a region of low concentration to a high concentration area.

Answer: A

Explanation:

The reason for considering alternative statement as false are:

• Throughout passive transport energy isn't used to move materials against a concentration gradient whereas in active transport, energy is employed to move materials against a concentration difference.

• Throughout passive transport osmosis enable solvents to pass from the one end to the opposite end of the membrane to equalize concentration on each side. It doesn’t permit salt to move.