AP BIOLOGY

LABORATORY REVIEW

CELL RESPIRATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
NADP is important in photosynthesis because it:
A
becomes oxidized to form NADPH
B
NADPP is needed to form chlorophyll.
C
provides additional oxygen atoms for the formation of glucose
D
carries high-energy electrons that are harvested at photosystem II that is needed to produce glucose.
Explanation: 

Detailed explanation-1: -What is the role of NADP+ in photosynthesis? It assists chlorophyll in capturing light. It acts as the primary electron acceptor for the photosystems. As part of the electron transport chain, it manufactures ATP.

Detailed explanation-2: -From photosystem II, electrons are carried by plastocyanin (a peripheral membrane protein) to photosystem I, where the absorption of additional photons again generates high-energy electrons. Photosystem I, however, does not act as a proton pump; instead, it uses these high-energy electrons to reduce NADP+ to NADPH.

Detailed explanation-3: -The full form of NADPH is nicotinamide adenine dinucleotide phosphate hydrogen. It plays a crucial role in many of the chemical reactions that make up the procedure of the photosynthesis.

Detailed explanation-4: -Photosystem I (PSI) is also capable of absorbing light energy. Electrons from its reaction center pigment P700 are transferred to the protein ferredoxin, which can then donate the electrons to the electron carrier NADP+ to form NADPH or to the electron transport chain resulting in the production of additional ATP.

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