Photosynthesis

Question 1

Photosynthesis

Answer 1

The way in which plants make glucose using light energy

Question 2

Photosynthesis word equation

Answer 2

Carbon
Dioxide+Water → Glucose + Oxygen

Question 3

Balanced chemical equation

Answer 3

6CO2 + 6H20 → C6H12O6+602

Question 4

What is needed for Photosynthesis

Answer 4

Carbon dioxide, light energy, chlorophyll, water

Question 5

What is produced during Photosynthesis

Answer 5

Glucose+waste oxygen

Question 6

Energy conversion that occurs during Photosynthesis

Answer 6

Light → Chemical

Question 7

Is Photosynthesis catabolic or anabolic?

Answer 7

Anabolic

Question 8

Events of light stage

Answer 8

Light is absorbed, energised, high energy electrons, move with an electron accepter molecule 🚕. 2 pathways given

Question 9

Light stage path 1

Answer 9

Some electrons return to the chlorophyll. Lose energy. Energy released is trapped by ADP and a phosphate used to form ATP and water (cyclic photophosphorylation)

Question 10

Light stage pathway 2

Answer 10

Electrons don’t return. Pass through 2 at a time through another set electron accepter molecules 🚖. Energy loss again makes ATP. The electrons pass through NADP+ (Nicotinamide Adenine Dinucleotide) forming NADP-
Light absorbed splits water into oxygen, electrons and H+ ions (protons). H ions mix with NADP- forming NADPH

Question 11

Light stage products

Answer 11

ATP, NADPH, Oxygen

Question 12

Dark stage events

Answer 12

Co2 released from air enters chloroplast, reduced (H added) to become glucose. NADPH made in the light stage remakes the NADP+
When ATP releases 3rd phosphate, ADP is reformed