1. autotrophs ("self use light energy to drive the synthesis of organic mole-
feeders") cules from CO2 and water
2. Photosynthesis harnesses sunlight to make carbohydrate (sugar)
3. Chloroplasts the site of photosynthesis in plants
4. endergonic reac- requires energy to react
tion
5. Photosynthesis - plants take in CO2 and H2O, and with the aid of sunlight
as a REDOX (energy) synthesis carbohydrate (glucose) and release
process O2
- carbon is reduced
- oxygen is oxidized
- endergonic
6. Cell wall - provides mechanical strength
- consists of rods or fibres of cellulose in a matrix of other
polysaccharides and proteins
7. Plasmodesmata connects cells through cell walls
8. central vacuole storage, waste breakdown
9. chloroplasts - site of photosynthesis
- have double membrane
- have fluid filled stroma
- has hundreds of membrane-bound thylakoids (= 3rd
membrane system)
10. Characteristic of thing, flexible, primary cell wall
young plant cell
walls
, BISC 101 - Plant Midterm Exam Test with Verified Answers
11. thylakoids pancake-like grana (sing. granum),
12. enzymes and thylakoid membrane or stroma
pigments held
here
13. pigments substances that absorb visible light (a form of energy
14. Chlorophyll appears green b/c it absorbs violet-blue and red wave-
length light while reflecting green light
15. How does when a photon of light strikes chlorophyll molecule energy
chlorophyll cap- is transferred to an electron, the electron is raised to a
ture light ener- higher energy state (if the electron falls back to its lower
gy? state it emits energy as heat and light)
16. How can the en- chlorophyll molecules of an antenna complex to a reaction
ergy in chloro- centre and then the electron is transferred to an electron
plasts be passed acceptor
to an electron ac-
ceptor?
17. What happens to fluorescence, resonance, or reduction/oxidation
"excited" elec-
trons in pho-
tosynthetic pig-
ments?
18. Photosystems antenna complex, reaction centre and electron acceptor
on the thylakoid
membrane
contain:
19. name the struc-
tures of the
electron trans-
port chain
20. meristems generate cells for primary and secondary growth