What does the light dependent reaction of photosynthesis produce?

Answer 1

NADPH and ATP

In the non cyclic photophosphorylation light first hits photosystem II where it excites electrons to a higher energy level. The electrons come from the photolysis of a water molecule producing #O_2# and #H^+# in the thylakoid space. The electron moves through some proteins in the electron transport chain which move #H^+# from the stroma to the thylakoid space making a proton gradient.

The electron then moves to photosystem I where it gets excited to a higher energy level again. Then the electron is moved to #NADP^+# reductase, where #NADP^+# are reduced by the electrons.

The proton gradient created between the stroma and thylakoid space cause the #H^+# to flow back into the stroma through proteins in the thylakoid membrane called ATP synthase. The movement of the #H^+# powers the ATP synthase causing the phosphorylation of ADP to ATP.

For more information on the process of photosynthesis, I suggest this animation.

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Answer 2

Julian Aguilar

Photosynthesis can broadly be classified into two parts. They are Light Reactions and Dark Reactions.

Oxygen escapes into the atmosphere, leaving behind ATP, NADPH, and oxygen as end products of the light reaction. The ATP and NADPH produced are referred to as assimilatory power, and they are used in the dark reactions of photosynthesis.

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Answer 3

Easton Bailey

NADPH (nicotinamide adenine dinucleotide phosphate) and ATP (adenosine triphosphate) are the byproducts of photosynthesis, a light-dependent process.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.