Use the Following Figure to Answer the Question

question 22

Multiple Choice

Use the following figure to answer the question.

Refer to the accompanying figure and the molecules labeled A, B, C, D, and E. If the carbon atom of each of the incoming CO₂ molecules is labeled with a radioactive isotope of carbon, which organic molecules will be radioactively labeled after one cycle?

• A) C only
• B) B, C, D, and E
• C) C, D, and E only
• D) B and C only

---

Definitions:

Colon

The part of the large intestine, extending from the cecum to the rectum, that absorbs water and salts from food remnants.

Inflammation

A biological response to injury or infection, resulting in redness, warmth, swelling, and pain in the affected area.

Tenderness

A sensation of pain or discomfort when an area of the body is touched or pressed, often indicating inflammation or an underlying condition.

Discomfort

A mild physical or emotional state of feeling unwell or uneasy.