In photosynthesis energy from light reaction to dark reaction Is transferred in the form of:

Correct answer: C. NADPH

  • A. ADP
  • B. AMP
  • C. NADPH
  • D. Chlorophyll

Explanation

ADP (adenosine diphosphate) is a molecule that is used to store energy in cells. It is the breakdown product of ATP, which is the main energy currency of cells. However, ADP does not contain any electrons, so it cannot carry energy from the light reactions to the dark reactions. AMP (adenosine monophosphate) is a simpler molecule than ATP. It is not as efficient at storing energy as ATP, and it is not used as an energy currency in cells. It also does not contain any electrons, so it cannot carry energy from the light reactions to the dark reactions. NADPH (nicotinamide adenine dinucleotide phosphate) is a molecule that is used to carry electrons in cells. It is produced in the light reactions of photosynthesis, and it is used in the dark reactions to reduce carbon dioxide. NADPH contains two high-energy electrons, which are used to drive the dark reactions. Chlorophyll is a molecule that absorbs light energy and uses it to drive the light reactions of photosynthesis. It is not involved in the transfer of energy from the light reactions to the dark reactions. Therefore, the answer is C) NADPH NADPH is the molecule that carries energy from the light reactions to the dark reactions in photosynthesis.

Last updated

About Bioenergetics

Cellular respiration explains how cells release energy from glucose through glycolysis, the link reaction, Krebs cycle and electron transport chain. It includes ATP production, substrate-level and oxidative phosphorylation, aerobic versus anaerobic respiration, and the roles of mitochondria, oxygen and fermentation in energy transfer.

Practise Bioenergetics

1,378 free Bioenergetics MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.

Exams that ask Biology questions like this

Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.

Related questions