Multiple Choice
Which of the following occurs only in anaerobic metabolism of glucose?
25
views
8. Respiration
Fermentation & Anaerobic Respiration
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
What is the fate of the NAD$^+$ newly regenerated by fermentation?
A
It is broken down into amino acids for protein synthesis.
B
It is exported out of the cell as a waste product.
C
It is converted into ATP during oxidative phosphorylation.
D
It is reused in glycolysis to accept electrons.
Verified step by step guidance1
Understand the role of NAD$^+$ in cellular respiration: NAD$^+$ is a coenzyme that acts as an electron carrier during metabolic processes, including glycolysis.
Recall the purpose of fermentation: Fermentation occurs in anaerobic conditions to regenerate NAD$^+$, allowing glycolysis to continue producing ATP in the absence of oxygen.
Identify the connection between NAD$^+$ and glycolysis: NAD$^+$ is reused in glycolysis to accept electrons from glucose as it is broken down into pyruvate.
Eliminate incorrect options: NAD$^+$ is not broken down into amino acids, exported as waste, or converted into ATP during oxidative phosphorylation (which requires oxygen).
Conclude that the regenerated NAD$^+$ is essential for glycolysis to proceed, ensuring the cell can continue producing ATP anaerobically.
7:51mWatch next
Master What Happens to Aerobic Organisms if There's No Oxygen? with a bite sized video explanation from Jason
Start learningRelated Videos
Related Practice
Fermentation & Anaerobic Respiration practice set
Problem sets built by lead tutorsExpert video explanations