5C: Factors affecting the rate of photosynthesis

Question 1

Rate

Answer 1

The speed at which a chemical reaction proceeds

Question 2

Plateau

Answer 2

To reach a state where no further change occurs

Question 3

Saturation point

Answer 3

The point at which a substance (e.g. an enzyme)

cannot receive more of another substance (e.g. a substrate)

Question 4

Limiting factor

Answer 4

A factor that prevents the rate of reaction from increasing

Question 5

Affinity

Answer 5

The tendency of a molecule/atom to bind or react with another molecule/atom

Question 6

Reasons Causing Plateau

Answer 6

• maximum rate is reached due to the plant hitting its saturation point of the variable
• there is not enough of one of the reactants needed therefore it is a limiting factor