Factors affecting Photosynthesis

Question 1

What happens to the photosynthesis rate when light intensity increases?

Answer 1

The rate of photosynthesis increases too untill it reaches a saturation point

Question 2

What could be the light saturation point happen cause of

Answer 2

Enzymes in the chloroplasts are all used up or operating at full capactity
One of the reactants for photosyntheisis is a limiting factor

Question 3

What is the difference in light intensity affecton photosynthsis on C3, C4 AND CAMplants?

Answer 3

No difference, they all undergo light dependent reactions

Question 4

WHAT CHLOROPHYL pigment absorbs the most amount of light

Answer 4

Chlorophyll a and chlorophyll B

Question 5

Why does water availability affect the rate of photosynthesis

Answer 5

Photosynthesis requires water as an input
2. When the water loses water too much, the stomata closes and then therefore preventing gas exchange which decreases photosynthsis

Question 6

Generally higher the tempreature the higher the photosynthesis rate? True or false

Answer 6

True until it reaches its optimal temp

Question 7

Why cant a plant temp go past its optimal temp

Answer 7

Because the photosynthetic enzymes begin to denature
2. Or Rubsico will have a higher affinity to oxygen than co2 in plants ( except c4)

Question 8

What are all the factoes that affect rate of photosynthesis

Answer 8

1. Light availability
2. Temp
3. pH level
4. Water availability
5. Carbon dioxide concentration

Question 9

Increasing the CO2 in the athmosphere is good for the plant yes?

Answer 9

No as an increasing C02 concentration increases tempreature, wchich increases the affinity for Rubisco to bind with Oxygen instead of C02

Question 10

What is the 2 reasons for saturation point of Concentration dioxide

Answer 10

1. Enzymes in chloroplasts is used up
2. Another factor needed for photosynthesis is a llimiting factor

Question 11

What do competitive inhibtors do

Answer 11

They bind to the active site and compete with the substrate

Question 12

What do non compettives inhibitors do

Answer 12

They bind to the alloesteric stie of an enzyme anf changes the enzyme shape preventing subtrates from binding

Question 13

Talk about the effect of increasing substrate concentration when competive inhbitors are present

Answer 13

The effect of competitive inhibitors can be overcomes as the substrate concentration is increased as there is a higher chance for subtrates to be bind with the enzyme