Active Transport

Question 0

What is required for active transport to take place?

Answer 0

ENERGY

Question 1

What is active transport?

Answer 1

Opposite to osmosis
When the concentration is lower outside the cell it must be actively transported into the cell
It does this by moving AGAINST A CONCENTRATION GRADIENT.

Question 2

What can active transport do that osmosis can’t?

Answer 2

Move salts and minerals from an area of LOW concentration to an area of HIGH concentration

Question 3

What is an example of were active transport needs to take place?

Answer 3

Uptake of nitrate ions by root hair cells

Question 4

What is the process of root hair cells taking up nitrate ions?

Answer 4

Nitrate ions can’t be diffused
Have to be actively transported
From soil water (low nitrate concentration) to inside plant cells (high nitrate concentration)

Question 5

What will effect the rate of active transport?

Answer 5

Any factor that effects the rate of respiration as active transport requires energy and it gets it from respiration

Question 6

Examples of things that get energy from respiration….

Answer 6

Glucose concentration (resp needs it)
Oxygen (aerobic needs it)
Temperature (enzymes controlling resp)
Toxic substances (e.g. cyanide stops resp)