The Molecule That Is Found at the Beginning and End

question 6

Multiple Choice

The molecule that is found at the beginning and end of the citric acid cycle is

• A) a C₄ molecule.
• B) pyruvate.
• C) lactate.
• D) glucose.
• E) RuBP.

---

Definitions:

Reagent

A substance or compound added to a system to cause a chemical reaction or test if a reaction occurs.

Transesterified

The process of exchanging the organic group R″ of an ester with the organic group R' of an alcohol.

Biodiesel

A renewable, biodegradable fuel made from vegetable oils or animal fats through a process called transesterification.

Trans Double Bond

A type of double bond where the substituents are on opposite sides, resulting in a more linear and less polar structure compared to cis double bonds.