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Flashcards in Chapter 10 Deck (20):
1

autotrophic organisms

capable of producing own energy (plants)

2

heterotrophic organisms

rely on consumption of their organisms in order to obtain energy

3

reactants of photosynthesis

6 CO2 + 6 H2O + energy

4

products of photosynthesis

C6H12O6 + 6 O2

5

respiration products and reactants

-opposite of photosynthesis
C6H12O6 + 6 O2 ===> 6 CO2 + 6 H20 + heat

6

where does light reaction of photosynthesis take place

-on the thylakoid membrane
-inside called the lumen (light dependent)
-outside called the stroma (light-independent)

7

photosystem

-in thylakoid membrane
-chlorophyll molecules and accessory pigments are organized by proteins
-form structure called antenna complex and reaction center
-complexes and molecules capture and process excited electrons

8

wavelengths / colors of light chlorophyll absorbs best, worst, transmits

-best 400-500 nm (blue)
-worst 620-700 nm (red)
-transmits 500-600nm (green)

9

role pf accessory pigments

-also called carotenoids
-absorb wavelengths of light not absorbed by chlorophyll
-extend range of light that can drive photosynthesis

10

initial step of light reaction in photosynthesis

-light energy absorbed
-creating a high energy electron

11

what forms does energy take during steps of photosynthesis

-reduced molecules,
-chemical bonds,
-gradients

12

role of H2O in photosynthesis

donate electrons that are passed in the chain that result from hydrolysis

13

major events of light reaction vs. Calvin cycle

-light reactions: light energy is converted into chemical energy that can be used by the cell wall
-Calvin cycle: fixes carbon into sugar that can be used by the cell

14

phosphorylation

-production of ATP molecules by ATP synthase
-using proton-motive force generated by light excited electrons flow through ETC during photosynthesis

15

oxidative phosporylation

-product of ATP molecules by ATP synthase
-using proton gradient established via redox reactions of ETC

16

carbons of CO2 are ________

oxidized

17

carbons of glucose are ________

reduced

18

source of electrons for reduction of carbon during Calvin cycle

each CO2 molecule requires energy from 3 molecules of ATP and 2 molecules NADPH

19

what event causes fixation

-fixation of 6 3-phosphoglycerate from 3 3 ribulose biphosphate (RuBP) and 3 CO2
-catalyzed by the enzyme rubisco

20

where does Calvin cycle take place

-in stroma of chloroplast / outside of thylakoid membrane