Active Transport

Question 1

What is active transport?

Answer 1

Active transport is the movement of ions and molecules through the cell membrane from a lower concentration of the ions/ molecules to a higher concentration of the ions/ molecules.

Question 2

Does active transport require energy? Why?

Answer 2

Yes. Because it moves ions/molecules against a concentration gradient.

Question 3

What substance moves through the cell membrane by active transport?

Answer 3

Sodium.

Question 4

Do the particles move from low to high or high to low concentration?

Answer 4

Low to high

Question 5

Do the particles move down or against a concentration gradient?

Answer 5

Against

Question 6

Is energy required?

Answer 6

Yes

Question 7

Is active transport passive or active?

Answer 7

Active

Question 8

In an investigation to find the weight change of potato cubes in different sucrose concentrations. The best reason to compare the percentage change is the

Answer 8

Potato cubes were not the same weight at the start.

Question 9

Explain why the pond plant cells need large numbers of mitochondria.

Answer 9

More mitochondria do more aerobic respiration which make more energy for more active transport.