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photosynthesis

lectures 19-22

QuestionAnswer
autotroph makes its own food
photoautotroph autotroph that uses light energy
heterotroph must ingest/obtain chem energy & organic molecules from other sources
oxygen produced by autotrophs used by heterotrophs
photoautotroph uses light energy to make its own food & contains photosynthetic pigments
photoheterotroph needs light energy & needs organic compounds to make new structures & biomolecules. cannot fix carbon
chemoheterotroph doesn't use light energy & cannot fix carbon. obtain energy via oxidation of e- donors in the environment. (in/)organic e- sources are used to create new molecules.
chemoautotroph get energy from chem rxns. fixes carbon. inorganic sources of energy (h2s, nh3, fe2+).
photosynthesis needs h2o & co2
photosynthesis produces c6h12o6 & o2
light reaction involves light energy. thylakoid. splits water. generates ATP & NADPH
dark reaction does not involve light energy. stroma. generates c6h12o2.
co2 is ________ into c6h12o6 and is a(n) _________ agent reduced, oxidizing
h2o is ________ into o2 and is a(n) _________ agent oxidized, reducing
photosynthesis is an ________ redox process endergonic
NADH and FADH2 are _______ that _______ when reduced and ______ when oxidized coenzymes, carry e- in high energy states, lose H+ & e- to become NAD+ & FAD
NAD+ is used in ________ and NADP+ is used in ________ cellular respiration, photosynthesis
electromagnetic radiation light travelling in waves, each one with distinct wavelength
light entering chloroplasts may be ___________ (3) absorbed, transmitted, or reflected
photosynthetic pigments absorb mainly ________ light visible
chlorophyll a & b absorb mainly ____________ light, making plants appear __________ in color red, blue, & violet. green
carotenoids absorb _________ light and reflect __________ light and the excess that may damage the _______ green, blue, & violent. red, orange, & yellow. chlorophyll.
chlorophyll e- _________ as they absorb light and release _________ when they relax. excite & jump to higher energy levels. heat and light energy
PSII is the __________ reaction center, PSI is the ____________ reaction center. P680, P700
chemiosmosis energy coupling of concentration gradients & bio processes
Created by: knorrod
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