Midterm 2 - Photosynthesis Flashcards
1
Q
light reactions
A
- energy from light used to create temporary chemical energy
2
Q
CO2 fixation
A
- inorganic carbon converted to organic compounds by living organisms
2
Q
NADPH
A
- coenzyme
- anabolic pathways
3
Q
calvin cycle
A
- light-independent
(calvIN, independent) - convert carbon dioxide into carbs
(cc= Carbon dioxide to Carbs)
4
Q
thylakoid membrane
A
- inside chloroplast
- where light-dependent reactions of photosynthesis take place
5
Q
thylakoid space
A
- empty tubular space inside the thylakoid membrane
5
Q
chloroplast
A
- organelle in which photosynthesis takes place
6
Q
stroma
A
- fluid-filled space inside chloroplast
- where light-independent reactions happen
7
Q
chlorophylls
A
- A: absorbs violet-blue and red light, bluish-green colour
- B: absorbs blue and red-orange light, yellowish-green tint
8
Q
carotenoids
A
- photosynthetic pigment
- functions to dispose excess energy
9
Q
phycobilins
A
- capture light
10
Q
visible light
A
- electromagnetic radiation at wavelengths
11
Q
absorption spectrum
A
- range of wavelengths of electromagnetic radiation absorbed by a given substance
12
Q
action spectrum
A
- graph of the rate of biological effectiveness plotted against wavelength of light
13
Q
photosystem
A
- light-dependent
- absorb light energy and convert to chemical energy
14
Q
light-harvesting complex
A
- passes energy from sunlight to reaction center in each photosystem
15
Q
reaction center complex
A
- chlorophyll molecules and a primary electron acceptor
- can undergo oxidation and reduction
16
Q
reaction center chorophyll a
A
- site of photosynthetic reactions
17
Q
chlorophyll oxidation
A
- removal of electron from chlorphyll
18
Q
primary electron acceptor
A
- pigment or other organic molecule
- accepts an energized electron from reaction center
19
Q
photophosphorylation
A
- conversion of ADP to ATP
20
Q
non-cyclic photophosphorylation (z-scheme)
A
- results in the movement of electrons in a non-cyclic manner for synthesizing ATP molecules
21
Q
H+ gradient
A
- concentration difference between the inner and outer mitochondrial membrane
22
Q
cyclic photophosphorylation
A
- organisms accomplish the conversion of ADP to ATP for immediate energy for the cells
22
Q
14C tracer
A
- estimates the uptake and assimilation of dissolved inorganic carbon
23
Q
rubisco
A
- 1st enzyme of calvin cycle
24
Q
RuBP
A
- 1st reaction of calvin cycle
25
Q
1-glyceraldehyde-3-phosphate
A
- net gain of calvin cycle
