Multiple Choice
If oxygen is not available, what happens to the end product of glycolysis, pyruvate, in most eukaryotic cells?
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8. Respiration
Fermentation & Anaerobic Respiration
Multiple Choice
One of the byproducts of metabolism without oxygen is:
A
Lactic acid
B
Glucose
C
Oxygen
D
Water
Verified step by step guidance1
Step 1: Understand the context of the problem. Metabolism without oxygen refers to anaerobic respiration, which occurs when cells generate energy in the absence of oxygen.
Step 2: Recall the process of anaerobic respiration in humans. During this process, glucose is broken down to produce energy (ATP), and one of the byproducts is lactic acid.
Step 3: Compare the options provided. Glucose is the starting molecule, not a byproduct. Oxygen is absent in anaerobic respiration, and water is not typically produced in this process.
Step 4: Identify the correct byproduct of anaerobic respiration in humans, which is lactic acid. This occurs in muscle cells during intense exercise when oxygen is limited.
Step 5: Conclude that lactic acid is the correct answer based on the biological process of anaerobic respiration.
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