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Photosynthesis AP Biology

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Section 1

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light reactions

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1 / 33

Biology Science

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6 years ago

Date created

Mar 1, 2020

Cards (33)

Section 1

(33 cards)

light reactions

Front

light energy is converted to chemical energy in molecules of ATP and NADPH

Back

carbon fixation

Front

rubisco binds CO2 to RuBP as the 1st step of the Calvin Cycle

Back

phloem

Front

vascular tissue through which food moves within plants

Back

chlorophyll a

Front

the primary pigment that absorbs sunlight for photosynthesis (absorbs red and violet light)

Back

photosynthesis

Front

transforms energy from sunlight into chemical energy in carbohydrates

Back

G3P

Front

molecule that is made in the Calvin cycle; glucose is formed when two of these molecules combine

Back

endergonic reaction

Front

photosynthesis stores energy in the bonds of sugars

Back

electron transport chain (ETC)

Front

a series of proteins which move electrons within the thylakoid membrane

Back

NADPH

Front

this electron carrier is formed by combining NADP+, e-, and H+

Back

plants, algae, and some bacteria

Front

organisms which conduct photosynthesis

Back

photosystem I

Front

pigment molecules which absorb light energy 700nm

Back

water

Front

supplies the e- and H+ for photosynthesis

Back

rubisco

Front

the enzyme that "fixes" CO2 into the Calvin Cycle

Back

reduction

Front

the 2nd step in the Calvin Cycle in which NADPH releases e-

Back

stroma

Front

colorless fluid that surrounds the grana inside the chloroplast. It is where the Calvin cycle occurs.

Back

accessory pigments

Front

pigments other than chlorophyll that absorb other wavelengths of light

Back

xylem

Front

vascular tissue that carries water and nutrients from the roots to the rest of the plant

Back

thylakoid

Front

membrane disks filled with chlorophyll within chloroplasts

Back

NADPH and ATP

Front

high energy compounds produced by the light reactions that move into the Calvin Cycle

Back

stomata

Front

mall openings on the underside of a leaf through which O2 and CO2 can move

Back

chemiosmosis

Front

the movement of H+ down its gradient, which generates ATP production

Back

phosphorylate

Front

the process of adding a phosphate to a molecule

Back

O2

Front

released as a result of the splitting of water

Back

guard cells

Front

cells that control the opening and closing of stomata

Back

ATP synthase

Front

enzyme that makes ATP from ADP and inorganic phosphate

Back

cytochrome

Front

the protein which moves H+ in the ETC of light reactions

Back

transpiration

Front

loss of water from a plant through its leaves

Back

capillary action

Front

the movement of water upward through a plant

Back

photosystem II

Front

pigment molecules which absorb light energy 680nm

Back

light-dependent reactions

Front

reactions of photosynthesis that use energy from light to produce ATP and NADPH

Back

Calvin Cycle

Front

reactions of photosynthesis in which energy from ATP and NADPH is used to build high-energy compounds such as sugars

Back

granum

Front

a stack of thylakoid membranes within a chloroplast

Back

pigments

Front

molecules that absorb photons of light making photosynthesis possible

Back