chloroplasts Flashcards
1
Q
state the 4 layers of the chloroplast from outer to innermost
A
- outer membrane
- inner membrane space
- inner membrane
- stroma
2
Q
what are granum
A
stacked thylakoids
3
Q
what are thylakoids
A
folded membranes containing photosynthetic pigments involved in light dependent reactions
4
Q
what is the stroma
A
fluid interior containing enzymes involved in the light independent reaction
5
Q
what are the 2 primary pigments
A
chlorophyll a and b
6
Q
what is an example of an accessory pigment
A
carotenoids
7
Q
chlorophyll a absorbs which colours?
A
yellow, green
8
Q
chlorophyll b absorbs which colours
A
blue, green
9
Q
carotenoids absorb which colour
A
orange
10
Q
where are pigments located
A
embedded in thylakoid membrane
11
Q
what do the pigments do?
A
form light harvesting systems - each pigment absorbs a different wavelength of light
12
Q
summarise the process of separating pigments using TLC
A
- crush leaf and grind with sand & propanone to extract pigments
- transfer to watch glass & dry to evaporate moisture
- add propanone to absorb pigments
- add spot to TLC paper and place tip in running solvent
13
Q
A
