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2.9 Photosynthesis

QuestionAnswer
photosynthesis production of carbon compounds in cells using light energy
organelle where photosynthesis occurs chloroplast
starting reactants of photosynthesis CO2 and H2O
final products of photosynthesis glucose and O2
range of visible light 700nm to 400nm: red, orange, yellow, green, blue, indigo, violet
chlorophyll main site of light absorption in light dependent stage
chlorophyll a absorbs red and violet light
chlorophyll b absorbs blue and orange light
color chlorophyll reflects green
action spectrum and absorption spectrum absorption spectrum shows the wavelengths absorbed whereas action spectrum shows the rate for each wavelength
chromatography -used to separate photosynthetic pigments -pigments include chlorophylls, carotenes, etc -indetified by Rf value
Rf value distance moved by spot/distance moved by solvent
fixation conversion of an inorganic form of an element to an organic form
limiting actors of photosynthesis temperature, light intensity, CO2 concentration
role of limiting actors change rate of photosynthesis
effect of temperature bell curve
effect of light plateaus
effect of CO2 concentration plateaus
effects of increasing oxygen oceans: had large amounts of iron that became oxidized, atmosphere: initially had trapped oxygen, rocks: have iron ore and oceans rocks precipitate down into the sediment
structure and function of a chloroplast relationship thylakoids: space for H+ to accumulate, grana: thylakoids increase surface area, stroma: proper enzyme and light for LIR
location of light dependent reaction thylakoids
products of light dependent reaction O2, ATP, NADPH
photolysis of water lights splits water molecules, making O2 and H+
noncyclic phosphorylation ps 1 and 2 absorb light, ps2's excited electrons move through ETC, ps2 electrons replace ps21 electrons, photolysis of water replaces ps2 electrons
products of noncyclic phosphorylation ATP and NADPH+
phosphorylation through chemiosmosis High H+ concentration in thylakoid, chemiosmosis causes H+ to return to stroma, travels through ATP synthase, produces ATP
cyclic phosphorylation ps 1 absorbs light, excited electrons travel down ETC, electrons produce ATP, electrons return to ps 1
products of cyclic phosphorylation ATP
light dependent reaction light excites electrons in ps 1 and 2, electrons travel through ETCs in noncyclic and cyclic, ATP is made through phosphorylation, photolysis produces O2 and H+
Melvin Calvin used a lollipop apparatus to track radioactive carbon in chlorella and then used paper chromatography to look at the fixation of carbon
products of LDR needed in LIR NADPH and ATP
location of light independent reaction stroma
action spectrum and absorption spectrum relationship positive correlation with large peak at blue and smaller peak at red
Created by: luciepike
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