Chapter 8 Flashcards
1
Q
Photosynthesis
A
- Anabolic
2. Endergonic
2
Q
Biomass
A
Source of world’s food supply
3
Q
Chloroplast
A
Where energy harvesting is done
4
Q
2 Stages of photosynthesis
A
Light dependent and light independent reactions
5
Q
Overview of photosynthesis
A
- splits water apart
- oxygen is a waste product
- Put high energy electrons through photosynthetic ETC
- Calvin Cycle: CO2 comes in sugar comes out
- ATP and NADPH travel through stroma to the calvin cycle
6
Q
Light dependent reaction
A
- Harvesting of light energy
- Conversion to chemical energy
- Converting to reducing power NADPH
- Endergonic- energy provided by light energy
- Water consumed, oxygen released
7
Q
Light independent reaction
A
- CO2 is incorporated into organic compounds in a process called carbon fixation
- consumes ATP, NADPH produced
- The ATP never leaves the chloroplast-not a source of energy for the cell
- Calvin Cycle- Metabolic Pathway
8
Q
Calvin Cycle
A
- goal is to produce 6C6H12O6
- Carbon fixaion
- ATP and NADPH needed to synthesize carbohydrates using CO2
9
Q
Carboxylation
A
- First part of Calvin Cycle
2. CO2 added to 5-Carbon molecule
10
Q
Reduction
A
- Second part of Calvin Cycle
- 3PGA yield 3-carbon sugar
- requires ATP and NADPH
11
Q
Regeneration
A
- Third part of Calvin Cycle
2. Regenerates 5-carbon molecule needed for carboxylation
12
Q
Photosystem
A
Collection of photosynhetic pigments
13
Q
light energy
A
Chlorophyll reflects and transmits green
14
Q
Photon
A
Unit of light energy
15
Q
PSII
A
- Starts the whole system
- Makes ATP
- Supplies electrons at the beginning of the Electron Transport Chain
