AP BIOLOGY

PHOTOSYNTHESIS

THE CHLOROPLAST

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the name of the process that uses light to split water molecules
A
photosystem 1
B
photosynthesis
C
photolysis
D
photosystem 2
Explanation: 

Detailed explanation-1: -Splitting of H2O molecules into hydrogen ions and oxygen in the presence of light and stroma is photolysis.

Detailed explanation-2: -In a process called photolysis (’light’ and ‘split’), light energy and catalyst s interact to drive the splitting of water molecules into protons (H+), electrons, and oxygen gas.

Detailed explanation-3: -Photolysis is the splitting of water molecules in the presence of light into proton, electron and oxygen. It takes place during non-cyclic photophosphorylation. The protons are used to reduce NADP and electrons are fed to photosystem II. Oxygen is released as a waste product. Was this answer helpful?

Detailed explanation-4: -photolysis, chemical process by which molecules are broken down into smaller units through the absorption of light. The best-known example of a photolytic process is the experimental technique known as flash photolysis, employed in the study of short-lived chemical intermediates formed in many photochemical reactions.

Detailed explanation-5: -During photolysis, the light activates chlorophyll and at the same time, it splits the water molecule into hydrogen ions and oxygen gas. This process also involves a catalyst that is found in chlorophyll. It attaches the water molecule into place before it is split.

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