Active Transport

Question 1

Water Often Moves Across the Cell Boundaries by ___________.

Answer 1

Osmosis.

Question 2

Two Main Ways in which Dissolved Substances Need to Move In and Out of Cells?

Answer 2

• Substances Move by Diffusion, Down a Concentration Gradient.
• The Substances Needed By a Cell have to Be Moved Against a Concentration Gradient. This is Called Active Transport.

Question 3

Active Transport Allows Cells to Move Substances From an Area of Low Concentration to an Area of _______ Concentration. This is Against the _____________.

Answer 3

High…Gradient…

Question 4

If a Cell Respires a Lot of Energy, it can Carry Out Lots of _________ Transport. Cells Involved in a Lot of Active Transport Usually have many _____________ to Release the Energy they Need.

Answer 4

Active…Mitochondria…

Question 5

By Using Active Transport, Plants Can Absorb Mineral Ions, Even Though it’s Against a ________________ Gradient.

Answer 5

Concentration.

Question 6

Sugar is Always Actively Absorbed Out of Your Gut and Kidney Tubules Into Your Blood, Often Against a ________ Concentration Gradient.

Answer 6

Large.