Biology - Plant and Animals - Photosynthesis

Question 1

Word equation for photosynthesis:

Answer 1

Carbon dioxide + Water —> Oxygen + Glucose
(chlorophyll, excess water, light)

Question 2

2 stages of photosynthesis:

Answer 2

Light dependent reaction
Light independent reaction

Question 3

Location of light dependent reaction:

Answer 3

Thylakoid membrane of the grana in a chloroplast

Question 4

Process of light dependent reaction:

Answer 4

Light is used to split water (input) into hydrogen ions and electrons.
Hydrogen ions and electrons are transferred to light independent reaction while the oxygen from the water is secreted out of the cell.

Question 5

NADPH

Answer 5

A co-enzyme used in photosynthesis.
Carries hydrogen ions and electrons between light dependent reactions and light independent reactions.

Question 6

Location of light independent reaction:

Answer 6

Stroma of a choloroplast

Question 7

Process of light independent reaction:

Answer 7

Carbon dioxide gains hydrogen ions and electrons (brought by NADPH) to form glucose.
This is done by an enzyme called rubisco.

Question 8

Chlorophyll

Answer 8

A major light trapping pigment for photosynthesis which are located in the grana.

Question 9

Limiting factors

Answer 9

Factors which prevents a reaction from proceeding at a greater rate, leading to a plateau.

Question 10

Limiting factors for photosynthesis:

Answer 10

Carbon dioxide
Light intensity
Chlorophyll
Temperature