Chapter 10 Photosynthesis

Question 1

Photosynthesis

Answer 1

Process plants use to take CO2, H20 and sunlight to make carbohydrate (sugars) and O2

Question 2

Photosynthesis formula

Answer 2

nCO2 + nH20 + Photons –> (CH2O)n (carbohydrates) + nO2

Question 3

2 stages of photosynthesis

Answer 3

Light dependent reactions

Dark reactions

Question 4

Light reactions

Answer 4

Take place in thylakoid membrane
Requires continuous supply of light

This is where cholorophylls absorb light energy and it is converted into chemical energy through the ofrmation of ATP and NADPH

Water molecules are also converted to oxygen gas

Question 5

NADPH

Answer 5

Reducing agent like NADH with an extra phosphate group

Question 6

Calvin Cycle

Answer 6

Takes in ATP and NADPH and CO2 and produces PGAL, G3P
Phosphoglyseraldehyde

Takes place in stroma and does not require light
Uses the ATP and NADPH from lighjt dependent reactions to fix carbon dioxide and produce 3 carbon sugars G3P which join up to form glucose

Question 7

Phosphoglyseraldehyde

Answer 7

3 carbons with a phosphate group attached
Used to produce carbohydrates like glucose

Question 8

Mesophyll

Answer 8

Cells in a middle layer of lead tissue called the mesophyll are primary site of photosynthesis

Question 9

Stomata

Answer 9

Small pores on the surface of leaves that let carbon dioxide diffuse into the mesophyll layer and oxygen diffuse out.

Question 10

Chloroplasts

Answer 10

Organelles in the mesophyll cell that are specialized to carryo ut the reactions of photosynthesis

Question 11

Thylakoids

Answer 11

Disc-like structures in choloroplasts that contain chlorophylls in the membrane

Question 12

Chlorophylls

Answer 12

Green colored pigments in the membrane of thylakoid that absorb light

Question 13

grana

Answer 13

stacks of thylakoids

Question 14

stroma

Answer 14

fluid filled space around the grana

Question 15

photosystems

Answer 15

large complexes of proteins and pigments that are optimized to harvest a key role in light reactions

Question 16

What are the two types of photosystems

Answer 16

Photosystem 1 and Photosystem 2

Question 17

What are the special pairs of chlorophyll molecules found at the core of the photosystem.

Answer 17

The special pair of photosystem 1 is called P700 and the special pair of photosystem 2 is called P680