2.1.3 Active Transport

Question 1

Active Transport

Answer 1

Allows cells to move substances from an area of low concentration to area of high concentration

Question 2

Energy?

Answer 2

As particles are moving against concentration gradient, energy must be transferred from energy store
-ATP is required from respiration

Question 3

Rate of active transport

Answer 3

• Depends on rate of respiration (required to produce needed ATP)
• Cells that carry out need many mitochondria so they can respire rapidly + produce lots of ATP

Question 4

Carrier proteins

Answer 4

Special proteins that span the width of cell membrane. A molecule cell needs, binds to carrier protein, energy is transferred from an energy source to the protein so it can rotate or change shape + transport molecule into cell