Cell Transport (Passive and Active)

Question 1

What is passive transport?

Answer 1

The movement of substances across the cell membrane without the use of energy coming from the cell.

Question 2

Explain an example of cells doing passive transport:

Answer 2

Diffusion.

Question 3

What is active transport?

Answer 3

The movement of substances across a cell membrane which requires energy because it is moving against the concentration gradient.

Question 4

Explain an example of cells doing active transport:

Answer 4

Proton Pump.

Question 5

What is diffusion?

Answer 5

Diffusion is the natural process in which molecules move from a place with high concentration to a place with low concentration.

Question 6

Is concentration the same as amount? Explain.

Answer 6

No it is not. Amount refers to the total of something while concentration refers to the total volume something occupies.

Question 6

What is the difference between facilitated diffusion (passive transport) and a protein pump (active transport)?

Answer 6

Facilitated diffusion requires no energy but a protein pump does and facilitate diffusion moves away from the crowd while a protein pump moves toward it.

Question 7

Define hypotonic, isotonic, and hypertonic:

Answer 7

Hypotonic: Less concentration
Isotonic: Equal concentration to solution
Hypertonic: More concentration

Question 8

A cell with 13% solute is placed in a solution of 45% solute. In which direction will osmosis occur?

Answer 8

It will move out of the cell.