Question

What is the difference between photosystem 1 and photosystem 2?

Answer 1

Hint:To answer this question, we first need to understand what a photosystem is. Photosystems are photosynthesis' functional units, defined by a certain pigment organization and association patterns, whose job is to absorb and transfer light energy, which entails electron transfer. Photosystems are physically present in the thylakoid membranes.

Complete step-by-step solution:
Photosystem - A multi unit complex found in the cytoplasmic membranes of photosynthetic bacteria and the thylakoid membranes of plants and algae. Its main function is to capture light and produce a sequence of redox reactions.
The light processes take place in the photosystem. Photosystem I and photosystem II have been discovered in plants and algae. Chlorophyll molecules, accessory pigments, proteins, and other components make up each of them. Both are responsible for the release and transportation of energized electrons to the electron transport chain. They differ in the chlorophylls that make up their reaction systems (P700 and P680), as well as the metabolic reactions in which they participate.
Difference between photosystem 1 and photosystem 2 –

Photosystem 1	Photosystem 2
It is Pigment system I or Photosystem I.	It is Pigment system II or Photosystem II.
Located in non-appressed part of grana thylakoids as well as stroma thylakoids.	Present in the affected part of grana thylakoids.
Reaction center is P700.	Reaction center or photo center is P680.
Chlorophyll: Carotenoids is 30: 1.	Chlorophyll: Carotenoids is 7: 1.
Chlorophyll a content is more than chlorophyll b.	Chlorophyll b is more than chlorophyll a.

Note:A reaction center, where the photochemistry takes place, and an antenna complex, which surrounds the reaction center, make up each photosystem. Hundreds of chlorophyll molecules make up the antenna complex, which funnels excitation energy to the photosystem's center. The energy will be trapped and transferred to a high-energy molecule at the reaction center.