Chapter 11: Photosynthesis Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

Where does Photosynthesis take place

A

Chloroplast

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What absorbs light energy

A

Chlorophyll

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What pathway is Oxygen produced

A

Pathway 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Equation for Photosynthesis

A

6CO2 + 6H2O –> (chlorophyll &sunlight) –> C6H12O6 + 6O2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is needed for Photosynthesis

A
Carbon dioxide ---- Atmosphere/Respiration
Water ---- Soil
Light ---- Sun/Artificial
Chlorophyll ---- Chloroplast
Temperature ---- 25 °c
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the 2 Phases

A

Light Phase - Grana in Chloroplast

Dark Phase - Stroma in Chloroplast

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How is Oxygen produced

A

Photolysis of water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

The fate of the oxygen produced

A

Released into the atmosphere or used in respiration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

The fate of the carbon dioxide in the dark stage

A

Combines with H+ and e- from NADPH to form C6H12O6

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the dark stage controlled by

A

Enzymes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Energy source in dark stage

A

ATP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Dark Stage of Photosynthesis

A

◘ NADPH from light stage supplies H+ and e- and NADP+
◘ NADP transports electrons
◘ Carbon dioxide from air is reduced to form C6H12O6
◘ Energy source comes from ATP
◘ NADP and ADP are regenerated

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Uses for products in dark stage

A

Respiration
Conversion to carbohydrates
NADP and ADP used again in light stage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Advantages of Genetically Modified Crops

A

Greater crop yield

Resistance to drought

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Light Stage

Pathway 1 - Cyclic

A

◘ Light knocks en electron from chlorophyll pigments
◘ This becomes a high energy electron
◘ It passes through the electron transport chain
◘ Energy is released and it becomes a low energy electron

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Pathway 2 - Non-Cyclic Phosphorylation

A

◘ Water splits into e- + 2H+ 1/2O2
◘ The hydrogen goes to the hydrogen pool
◘ Light is knocked out of chlorophyll pigments to become high energy electrons
◘ They pass to the electron acceptor and NADPH is formed
◘ It passes through energy carriers. O2 is released and ATP is produced