Photosynthesis Flashcards
what is the source of energy and carbon for most living things
photosynthesis
what does present of O2 allow
most efficient cell respiration
ozone layer -> life on land
how many stages does photosynthesis have
2
what is the name and what happens in the 1st stage of photosynthesis
light-capturing reactions;
light energy harnessed to produce chemical energy
- what transformation of chemicals happens in the mist stage?(not the only one
H20 -> O2
what happens in the 2nd stage of photosynthesis?
takes the chemical energy from the 1st stage and produce 2nd form of chemical energy
the 2nd form of chemical energy is in bonds of a carb, where is the carbons come from?
C02
What happened in progress of 2nd stage?
regenerates energy carriers for 1st stage
ATP —- ADP + Pi
NADPH —- (NADP+) + (H+)
What is the key to everything going on
regeneration of carriers (NADPH & ATP)
everything will stop without this;
like the ETC and first 3 stages of cell respiration
what is the site of photosynthesis?
chloroplast
Chloroplast exist in what kinds of organisms
plants and other photosynthetic eukaryotes
why are chloroplasts in leaves but not in roots
light for the first stage of photosynthesis
which stage of photosynthesis is chloroplasts use?
both
how many membranes does chloroplast have
3
what does the flattened structures called
thylakoids
what is the benefits of thylakoids?
increase surface area, houses important enaymes
what is the pace between thylakoid membrane and the middle “inner membrane” called?
stroma
what are pigments?
also part of thylakoid membrane
color of a pigment due to ______
wavelength not absorbed
why are plants green
this color is not used in photosynthesis
what light is absorbed the most
violet/blue and red light
(algal cells and aerotactic bacteria) oxygen seeking bacteria will gather in what color of light?
violet/blue, red
left and right sides
two main forms of photosynthesis pigments
chlorophylls and carotenoids
chlorophylls and carotenoids differ in
structure
absorption spectrum
main function
