Light Activation of P680 Results in Which of the Following $\to$

question 6

Multiple Choice

Light activation of P680 results in which of the following?
(I) electron transfer as follows: Q_A $\to$ Q_B $\to$ Chlα $\to$ Pheoα
(II) electron transfer from PSI directly back to the Pheoα-Q_A complex
(III) reduction of S₄ of the OEC to S₁ of the OEC
(IV) reduction of cytochrome b₆f

• A)I,III,IV
• B)I,II
• C)II,III
• D)I only
• E)IV only

---

Definitions:

Fluid Volume Overload

A condition where there is an excessive accumulation of fluid in the body, often leading to swelling and other health complications.

Blood Transfusion

The process of transferring blood or blood products from one person into the circulatory system of another to replace lost components of the blood.

Anaphylactic Shock

A severe, potentially life-threatening allergic reaction characterized by sudden drop in blood pressure and difficulty breathing.

Metabolic Acidosis

A condition where the body produces too much acid, or the kidneys are not removing enough acid, causing a decrease in blood pH.