5.1-5.6 Flashcards
If there is a surplus of glucose from photosynthesis, plants store the excess as ______, a complex carbohydrate.
starch
What two molecules are REACTANTS of photosynthesis?
Water and Carbon Dioxide
What product of photosynthesis is used as a building block for the cellulose found in plant cell walls?
Glucose
Are accessory pigments arranged in an electron transport chain?
No; they cluster together
The light reactions produce _____, and the carbon reactions produce _____.
ATP and NADPH; glucose
Within a photosystem, pigment molecules funnel photon energy to a pair of special chlorophyll a molecules called the
reaction center
Within a photosystem, what pigments capture photon energy and funnel the energy to the reaction center chlorophyll?
antenna pigments
Where do the carbon reactions of photosynthesis take place?
Stroma within a chloroplast
What three-carbon carbohydrate leaves the Calvin cycle and is used to build glucose and sucrose?
phosphoglyceraldehyde (PGAL)
In what stage of photosynthesis is carbon from CO2 used to make carbohydrate molecules?
Calvin cycle
When CO2 levels in C3 plant leaves are high (stomata are open), the ______ pathway is favored; when CO2 levels in C3 plant leaves are low and O2 levels are high (stomata are closed), the ______ pathway is favored.
C3; photorespiration
What are products of calvin cycle?
glucose (from PGAL)
NADP+
ADP
What is produced in the light reactions which provides energy and reducing power for the carbon reactions?
ATP and NADPH
define how photorespiration transpires
Oxygen is used by the enzyme rubisco in an energetically wasteful reaction.
which pathway uses bundle-sheath cells?
C4
