How Many Different Forms of Vitamin a Are Active in the Body

question 2

Multiple Choice

How many different forms of vitamin A are active in the body?

• A)1
• B)2
• C)3
• D)5

---

Definitions:

Cochlea

A spiral-shaped, fluid-filled inner ear structure responsible for converting sound waves into nerve signals that the brain interprets as sound.

Cortex

The outermost layer of the brain, responsible for complex functions including thought, memory, sensory processing, and voluntary movement.

Whale Songs

Complex sequences of vocalizations produced by whales, particularly males, that are thought to play a role in communication and mating behaviors.

Functions

The natural purpose or activities associated with a person, organ, or system in biology, or a specific role or activity in more general contexts.