Light Dependent ReeCtions Of Photosynthesis

Question 1

What is the general formula for photosynthesis?

Answer 1

Carbon dioxide +water +light energy = glucose and oxygen

Question 2

What are the key sites of photosynthesis in plant cells?

Answer 2

Stroma 
Stroma lammalae 
Thylakoids 
Grana
Inner and outer membrane

Question 3

What is the Stroma?

Answer 3

The fluid like substance within the inner membrane

Question 4

What do the stroma lamellae do?

Answer 4

Connect grana

Question 5

What are thylakoids?

Answer 5

Round disks that contain chlorophyl pigments

Question 6

What are grana?

Answer 6

Stacks of thylakoids

Question 7

What is chlorophyl?

Answer 7

A pigment that reflects the colour green

Question 8

What is so significant about chlorophyl A?

Answer 8

It is the only pigment that can transfer light energy to the reactions of photosynthesis.

Question 9

What is chlorophyl b and what does it do?

Answer 9

Chlorophyl B is an accessory pigment that can harness light energy and pass it on to chlorophyl a where it can then be used in the reactions of photosynthesis.

Question 10

What is stage 1 of the light reactions?

Answer 10

Photoexcitation

Question 11

What does photosystem 1 contain?

Answer 11

Chlorophyl a 700

Question 12

What are the three ways a proton gradient is made

Answer 12

Water splits releasing H protons into the lumen

Pq pulls hydrogens out of the stroma and down to the lumen

NADP reductase pulls hydrogens from stroma to reduce NADP

Question 13

Make sure you can draw and explain the light reactions of photosynthesis

Answer 13

Draw it