Chapter 8

Question 1

Photosynthesis

Answer 1

1. Anabolic

2. Endergonic

Question 2

Biomass

Answer 2

Source of world’s food supply

Question 3

Chloroplast

Answer 3

Where energy harvesting is done

Question 4

2 Stages of photosynthesis

Answer 4

Light dependent and light independent reactions

Question 5

Overview of photosynthesis

Answer 5

1. splits water apart
2. oxygen is a waste product
3. Put high energy electrons through photosynthetic ETC
4. Calvin Cycle: CO2 comes in sugar comes out
5. ATP and NADPH travel through stroma to the calvin cycle

Question 6

Light dependent reaction

Answer 6

1. Harvesting of light energy
2. Conversion to chemical energy
3. Converting to reducing power NADPH
4. Endergonic- energy provided by light energy
5. Water consumed, oxygen released

Question 7

Light independent reaction

Answer 7

1. CO2 is incorporated into organic compounds in a process called carbon fixation
2. consumes ATP, NADPH produced
3. The ATP never leaves the chloroplast-not a source of energy for the cell
4. Calvin Cycle- Metabolic Pathway

Question 8

Calvin Cycle

Answer 8

1. goal is to produce 6C6H12O6
2. Carbon fixaion
3. ATP and NADPH needed to synthesize carbohydrates using CO2

Question 9

Carboxylation

Answer 9

1. First part of Calvin Cycle

2. CO2 added to 5-Carbon molecule

Question 10

Reduction

Answer 10

1. Second part of Calvin Cycle
2. 3PGA yield 3-carbon sugar
3. requires ATP and NADPH

Question 11

Regeneration

Answer 11

1. Third part of Calvin Cycle

2. Regenerates 5-carbon molecule needed for carboxylation

Question 12

Photosystem

Answer 12

Collection of photosynhetic pigments

Question 13

light energy

Answer 13

Chlorophyll reflects and transmits green

Question 14

Photon

Answer 14

Unit of light energy

Question 15

PSII

Answer 15

1. Starts the whole system
2. Makes ATP
3. Supplies electrons at the beginning of the Electron Transport Chain

Question 16

PSI

Answer 16

1. Generates NADPH by energizing electrons with a second input of light energy

Question 17

Reaction Center

Answer 17

Where light energy is sent

Question 18

Photolysis

Answer 18

Breaking of water to build high energy electrons

Question 19

Photophosphorylation

Answer 19

The production of ATP from ADP using light energy

Question 20

Photosynthetic Electron Transport Chain

Answer 20

Absorption of light by protein pigment complexes

known as phoyosystems

Question 21

Thylakoid Membrane

Answer 21

1. 3rd highly folded membrane in chloroplasts

2. Where Photosynthetic Electron Transport Chain is located

Question 22

Granum/Grana

Answer 22

Thylakoids grouped into structures

Question 23

Stroma

Answer 23

Surrounds the thylakoid

Question 24

RuBP

Answer 24

5-Carbon molecule

Question 25

Rubisco

Answer 25

1. Enzyme that catalyzes RuBP 2. Slow 3. Must produce large amounts 4. Doesn't increase amount of energy by itself-carbon compounds must be reduces as well