Multiple Choice
The term metabolism is best defined as ________.
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7. Energy and Metabolism
Introduction to Metabolism
Multiple Choice
The waste product bilirubin is produced from the breakdown of which molecule in the body?
A
Glucose
B
Hemoglobin
C
ATP
D
Cholesterol
Verified step by step guidance1
Step 1: Begin by understanding the context of the question. Bilirubin is a waste product that is produced during the breakdown of certain molecules in the body. It is primarily associated with the recycling of red blood cells.
Step 2: Recall the structure and function of hemoglobin. Hemoglobin is a protein found in red blood cells that carries oxygen throughout the body. When red blood cells are broken down, hemoglobin is also degraded.
Step 3: Learn the process of hemoglobin breakdown. Hemoglobin is broken down into its components: globin (protein), iron, and heme. The heme group undergoes further degradation to form biliverdin, which is then converted into bilirubin.
Step 4: Compare the other options provided in the question. Glucose, ATP, and cholesterol are not involved in the production of bilirubin. Glucose is a sugar used for energy, ATP is the energy currency of the cell, and cholesterol is a lipid involved in cell membrane structure and hormone synthesis.
Step 5: Conclude that bilirubin is specifically produced from the breakdown of hemoglobin, making it the correct answer in this context.
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