Chapter 10 Flashcards
absorption spectrum
plot of wavelengths absorbed by a
pigment
action spectrum
plot of photosynthetic rate
against wavelength of light
autotroph
make their own food
bundle sheath cell
a leaf cell type that forms a tightly packed layer surrounding the veins
C3 plants
?
C4 Plants
Calvin Cycle
uses the ATP and NADPH
plus CO 2 to produce
carbohydrates
carboxylase
an enzyme that catalyzes the addition of a carbon monoxide (CO) molecule into an organic substrate
chlorophyll
a pigment that absorbs blue and red light and scatters green
crassulacean acid metabolism (CAM)
a specialized photosynthetic process that allows plants to conserve water and photosynthesize in arid conditions
cyclic electron transport
uses photosystem I and electron
transport to produce ATP instead of NADPH
electromagnetic radiation
propagated as waves and as
particles
heterotroph
cannot produce its own food, derives it from other plants or animals
light reactions
converts light energy to chemical
energy as ATP and NADPH
light harvesting complex
responsible for the absorption of solar energy and transfer of excitation energy to the reaction centers
light independent reactions
uses the ATP and NADPH
plus CO 2 to produce
carbohydrates
noncyclic electron transport
uses two photosystems to produce
ATP and NADPH
photon
packets of energy
photophosphorylation
the process by which plants use light energy from the sun to convert ADP into ATP
photorespiration
RuBP reacts with O2
photosynthesis
6CO2 + 6H2O arrow (light reactions) C6H12O6 + 6O2
Photosystem I
Produces NADPH
photosystem II
produces ATP
pigment
molecules that absorb specific wavelengths in the
visible range
reaction center
a complex of proteins, pigments, and other co-factors that convert light energy into chemical energy in photosynthesis
rubisco
incorporates CO2 into plants during photosynthesis
stoma
pores on leaf surface
where CO2 enters and O2 and
H2O exit
