Question

In chloroplast, the energy of light is captured by chlorophyll molecules and transferred by vibrational energy to a 'photochemical reaction center' that contains two molecules of a special chlorophyll that releases the electrons. These special chlorophyll molecules are called:

a. chlorophyll a
b. NADH
c. ATP synthase
d. pheophytin
e. plastoquinone

Answer 1

The special chlorophyll molecules in the photochemical reaction center of chloroplasts that can give up an electron are known as chlorophyll a. However, the pheophytin is the initial electron acceptor in photosystem II.

Step-by-step explanation:

In chloroplasts, the energy of light is captured by chlorophyll molecules and transferred by vibrational energy to the photochemical reaction center. This center houses a pair of chlorophyll a molecules with the unique ability to give up an electron upon excitation, a process known as a photoact. These special chlorophyll molecules undergo oxidation and are crucial steps in photosynthesis where light energy is converted into an excited electron, which is then used in the production of ATP and NADPH. The correct answer to the question is d. pheophytin, which serves as the initial electron acceptor in photosystem II and is incorrectly listed as an option for the special chlorophyll molecules in the reaction center.