week 4- photosynthesis

what happen if rubisco is inhibited?

-accumulation of nadph -no carbohydrate output

calvin cycle

1) carboxylation, in which CO2 is added to a 5-carbon molecule; (2) reduction, in which energy and electrons are transferred to the compounds formed in step 1; and (3) regeneration of the 5-carbon molecule needed for carboxylation

what is the first stable product of calvin cycle?

3-pga (3 c compound that the 6-c compound broke down into)

where does The photosynthetic electron transport chain takes place?

thylakoid membrane

what is the principle product of calvin cycle

triose phosphate

what is the carbohydrate output of calvin cycle

triose phosphate (3C)

how does 3-pga transform into carbohydrate output?

Although NADPH is a powerful reducing agent, energy and electrons are transferred from NADPH only under the catalysis of a specific enzyme, thus providing a high degree of control over the fate of these electrons. In the Calvin cycle, the reduction of 3-PGA involves two steps: (1) ATP donates a phosphate group to 3-PGA, and (2) NADPH transfers two electrons plus one proton (H+) to the phosphorylated compound, which releases one phosphate group (Pi). NADPH provides most of the energy incorporated in the bonds of the carbohydrate molecules produced by the Calvin cycle

which part of the calvin cycle do rubisco catalyze?

CO2 + RuBP catalyzed by rubisco

The Calvin cycle requires both ATP and NADPH. Which of these molecules provides the major input of energy needed to synthesize carbohydrates?

NADPH supplies the major input of energy that is used to synthesize carbohydrates in the Calvin cycle.

carbon enter calvin cycle as

co2

how is Rubp regenerated?

energy from atp

where does NADPH and ATP?

generate from e transport chain using sunlight

how does plant capture sunlight into chemical form?

light energy absorbed by pigment molecules drives the flow of electrons through the photosynthetic electron transport chain. The movement of electrons through the photosynthetic electron chain leads to the formation of both NADPH and ATP.

where does the phase of the calvin cycle take place?

stroma of the chloroplast