Semester 2, Test One Flashcards
Photosynthesis
the conversion of light energy into chemical energy
autotroph
an organism that is self feeding by photosynthesis and is a producer
heterotroph
other feeders and are producers, humans are these
cuticle
a wax covering on the outside of the leaf to prevent water loss
Mesophyl
the interior of the leaf, there are 30-40 chloroplasts in each mesophyl cell
Stemata
where the CO2 comes in and the oxygen goes out, only on the underside of the leaf
Choloplasts
double membrane, contain grana (thylocoids)
stroma
inside the chloroplasts, jelly like`
Where do light reactions occur?
photosystems in theThylocoid
Where do dark reactions occur?
stroma
What do light reactions need to occur?
light and water
What are the results of the light reactions?
oxygen, ATP, and NADPH
NADPH
an electron carrier
What does the dark reaction need to occur?
CO2, ATP, NADPH
What is the product of the Dark Reaction?
Sugar
photosystem
integral, contains chorophill (green)
Other names for the Dark Reaction
Calvin Cycle, light independent, C3 Pathway
p680
Photosystem 2
p700
Photosystem 1
The 2 proteins in Photosystem 2
Pc and Pq, Plastocynan, plastoquinine
Explain how the concentration grandient affects the process of ATP synthesis
H+ high in the thylakoid, low in stroma so H+ goes through ATP Synthase
What goes in and out of Photosystem 2
in: light and h2o
out: electron Os H+
What in and out Photosystem 1
in: electron and light
out: electron
