Question

A photosynthetic unit contains about 230 molecules of chlorophyll, this unit is
a. Photon
b. Quantasome
c. Quantum
d. All of the above

Answer 1

Hint: The photosynthetic device is a complex of pigments and proteins attached to a reaction core where the initial separation of photosynthetic reactions by light-driven charge takes place. The photosynthetic unit's 'size' is defined as the number of pigment molecules that absorb light that add excitation energy to a reaction core.

Complete answer:
A photon is a tiny molecule of electromagnetic radiation that consists of waves. Photons are just electric fields flowing across space, as seen by Maxwell. Photons have no fee, no mass at rest, and fly at light speed. A quantum is the minimal quantity in an interaction with any physical being involved.

Quantasomes are the morphological expression on the inner membrane of the thylakoid lamellae of physiological photosynthetic units.
In 1952, under the electron microscope, Steinman found granular patterns in chloroplast lamellae. Later, these granular structures were confirmed as physiological units of photosynthesis by Park and Biggins (1964) and the term Quantasome was coined. According to them, roughly 230 chlorophyll molecules comprise one quantasome.

In a photochemical reaction, a minimum amount of chlorophyll and other accessory pigments work together to release one oxygen or decrease one carbon dioxide molecule. It forms a unit of photosynthetics. Centered on a flickering light experiment, Emerson and Arnold (1932) found that 2500 chlorophyll molecules were required to repair one carbon dioxide molecule. The reduction or fixation of one carbon dioxide, however, involves 10 amounts of light, such that each unit will contain 1/10 of 2500, i.e. 250 molecules.

Hence, the correct answer is option (B).

Note: As a biochemical unit of photosynthesis, 200 to 300 chlorophyll molecules are generally considered. According to Emerson, for the release of one oxygen molecule or the reduction of one carbon dioxide molecule, 8 light quanta are needed.