Chapter 8 - Photosynthesis

Question 1

photosystem I

Answer 1

-

Question 2

photosystem II

Answer 2

-

Question 3

Cyclic photophosphorylation

Answer 3

-

Question 4

Non-cyclic photophosphorylation

Answer 4

-

Question 5

photosynthesis (defn and formula)

Answer 5

*

* Formula: 6CO2 + 6H2O -> C6H12O6 + 6H2O + 6O2

Question 6

light dependent reactions

Answer 6

• capture energy from sunlight

* make ATP and reduce NADP+ to NADPH

Question 7

light independent reactions

Answer 7

• also called carbon fixation reactions

* use ATP and NADPH to synthesize organic molecules from CO2

Question 8

chlorophyll

Answer 8

• chlorophyll a – primary pigment in plants and cyanobacteria that absorbs violet-blue and red light
• chlorophyll b – secondary pigment absorbing light wavelengths that chlorophyll a does not absorb

Question 9

stroma

Answer 9

semiliquid substance surrounding thylakoid membranes

Question 10

thylakoid

Answer 10

• In the chloroplast
• internal membrane arranged in flattened sacs
• contains chlorophyll and other pigments

Question 11

grana

Answer 11

stacks of thylakoid membranes

Question 12

chloroplast

Answer 12

An organelle in plant cells where photosynthesis takes place.

Question 13

Calvin Cycle

Answer 13

• biochemical pathway in photosynthesis that allows for carbon fixation
• occurs in the stroma
• uses ATP and NADPH as energy sources
• incorporates CO2 into organic molecules

Question 14

ribulose biphosphate carboxylase

Answer 14

-

Question 15

rubisco

Answer 15

-

Question 16

CAM

Answer 16

-

Question 17

C3

Answer 17

-

Question 18

C4

Answer 18

-

Question 19

NADPH

Answer 19

• Reduced NADP
• Made by light-dependent reactions
• Used by carbon-fixation reactions to synthesize organic molecules from CO2.

Question 20

photon

Answer 20

• a particle of light
• acts as a discrete bundle of energy
• energy content of a photon is inversely proportional to the wavelength of the light