Life on Earth - Photosynthesis

Question 1

Photosynthesis word equation

Answer 1

carbon dioxide + water –(light & chlorophyll)–> glucose + water

Question 2

Stage 1 of Photosynthesis

Answer 2

name: light dependant (photolysis)

light—> water —> oxygen—> released into atmosphere
____\/_______\/__
___ATP___hydrogen
____\/_______\/__
moves onto stage 2

Question 3

Stage 2 of Photosynthesis

Answer 3

name: light dependant (carbon fixation)

hydrogen + ATP (from S1) and Carbon Dioxide (from air)
|
V
enzyme controlled reaction
|
V
ADP + Pi and glucose

glucose has three fates:
- used for respiration
- starch (storage carbohydrate)
- cellulose (structural carbohydrate)

Question 4

Limiting factors of Photosynthesis

what is a limiting factor, name them

Answer 4

a limiting factor is a factor that will slow down (limit) the rate of photosynthesis when it is short supply
the rate of photosynthesis can be limited by the following:
- light intensity
- carbon dioxide concentration
- temperature

Question 5

ATP

Answer 5

Adenosine Triphosphate is a high energy compound which provides chemical energy for cellular processes

Question 6

Cellulose

Answer 6

complex carbohydrate used to construct cell walls

Question 7

Starch

Answer 7

a complex carbohydrate stored in plant cells