Which Five-Carbon Molecule Is the Starting Compound of the Calvin-Benson

question 50

Multiple Choice

Which five-carbon molecule is the starting compound of the Calvin-Benson cycle?

• A) PGA
• B) RuBP
• C) NADPH
• D) carbon dioxide
• E) ATP

---

Definitions:

Optic Tract

Tract that extends from the optic chiasma to the lateral geniculate nucleus of the thalamus.

Melanin Pigment

A natural pigment found in most organisms, responsible for coloration in the skin, hair, and eyes.

Visual Acuity

A measure of the sharpness or clarity of vision, typically assessed by the ability to discern letters or numbers at a standardized distance.

Sphincter Pupillae

A ring of smooth muscle fibers around the edge of the pupil in the eye, which constricts the pupil in bright light.