Question

Energy from light reaction is transferred to the dark reaction in the form of:
A. ADP
B. ATP
C. Chlorophyll
D. RuBP

Answer 1

Hint: A molecule which acts as a cell’s power currency is the form in which energy is transmitted from light to dark reaction. It is the molecule which enables the cell to store and transfer energy momentarily into the cell in order to facilitate endergonic chemical reactions.

Complete answer:
Adenosine diphosphate is known as ADP. It is also known as adenosine pyrophosphate. It is also one of the most numerous and one of the most essential energy molecules in the body. ADP is an essential molecule which is required for the energy flow in the living organism. ADP cycling supplies energy to the body in order to carry out the different biological processes. ADP can be converted into ATP through the process of releasing chemical energy supplied by the food taken by the organism. In plants, storage of energy available is done in the form of ADP which can be converted into ATP. However, it does not play any distinct no role in light reaction apart from storage of energy.

The energy of light absorbed by pigment molecules is used to produce high energy electrons with considerably potentially reduced potential. The pigment molecules that are responsible for the photosynthetic mechanism are called chlorophylls. They are the chief component essential in the process of photosynthesis as they allow the plants to absorb the energy from sunlight.

The electrons are used in a sequence of reactions called light reactions in order to generate both ATP and NADPH. The NADPH and ATP produced by a light effect then convert the molecules of carbon dioxide into one molecule of glucoses, by a series of reactions. This process is called the Calvin cycle. It is also known as the dark reactions as it occurs in the stroma of the chloroplast. In his process, it is finally converted into 3-phosphoglycerate.

Ribulose 1, 5-bisphosphate (RuBP) is an organic photosynthesis material. It's a colorless anion, ketopentose or ketone-sugar with five carbon atoms. It is a dual phosphate ester. Three carbon dioxide molecules are attached to three ribulose bisphosphate molecules (RuBP) in the Calvin cycle. ATP and NADPH for the Calvin cycle are the primary requirements for the dark reaction.

Hence, The correct answer is option (B).

Note: The power currency of a living cell is the ATP or adenosine triphosphate. The assimilating ability is the capacity of plants in the form of ATP and NADPH to obtain food (in the form of carbohydrates) from carbon dioxide reduction during photosynthesis. ATP is responsible for providing necessary energy to the different biological processes in a living organism. It is known to be present in all living organisms.