Question

What event accompanies energy absorption by chlorophyll (or other pigment molecules of the antenna complex)?

-An electron is excited.
-A carboxylation reaction of the Calvin cycle occurs.
-ATP is synthesized from the energy absorbed.
-Electrons are stripped from NADPH

Answer 1

Energy absorption by chlorophyll in the antenna complex of a photosystem results in the excitation of an electron. This process contributes to the light-dependent reactions of photosynthesis, eventually aiding in the formation of glucose.

Step-by-step explanation:

What event accompanies energy absorption by chlorophyll in the antenna complex? The answer is - An electron is excited. When light strikes chlorophyll or an accessory pigment, the energy is absorbed, exciting electrons in the molecule to a higher energy state. This energy captures the energy. In photosystems, this leads to a series of events: For photosystem II (PS II), it begins with the absorption of a photon by the antenna pigments, which transfer the energy to chlorophyll a.

Here, the electron becomes excited and is passed to an electron transport chain, while replacing the lost electron by splitting water molecules and releasing oxygen. In photosystem I (PS I), a similar process takes place, resulting in the production of NADPH. These processes, forming part of the light-dependent reactions of photosynthesis, create ATP and NADPH, which are then used in the Calvin cycle to synthesize glucose.