What Is the Electron Donor in Anaerobic Photosystem II

question 46

Multiple Choice

What is the electron donor in anaerobic photosystem II?

• A) H₂S
• B) bacteriochlorophyll
• C) quinol
• D) all of the above
• E) none of the above

---

Definitions:

Generativity Versus Stagnation

A stage in Erik Erikson's theory of psychosocial development where adults strive to create or nurture things that will outlast them.

Middle Adulthood

A stage of human development that typically covers the period from around age 40 to 65, focusing on personal and professional growth, stability, and facing the reality of aging.

Concrete Operational Stage

A stage in Piaget's theory of cognitive development (ages 7-12) where children gain the ability to think logically about concrete events.

Conservation

The understanding that certain properties of objects or substances do not change when their external appearance is altered, a concept children grasp in the concrete operational stage according to Piaget’s theory of cognitive development.