Multiple Choice
What is the first step in the anaerobic glycolysis process?
115
views
8. Respiration
Glycolysis
Multiple Choice
What is the net gain of ATP molecules produced per molecule of glucose during glycolysis?
A
2 ATP
B
8 ATP
C
6 ATP
D
4 ATP
Verified step by step guidance1
Understand the process of glycolysis: Glycolysis is the first step in cellular respiration, where one molecule of glucose (C₆H₁₂O₆) is broken down into two molecules of pyruvate. This occurs in the cytoplasm and does not require oxygen.
Identify the ATP usage and production during glycolysis: Glycolysis involves an initial investment of 2 ATP molecules during the energy investment phase. Later, 4 ATP molecules are produced during the energy payoff phase.
Calculate the net gain of ATP: To determine the net gain, subtract the ATP used from the ATP produced. Use the formula:
Recognize that glycolysis also produces other molecules: In addition to ATP, glycolysis generates 2 NADH molecules and 2 pyruvate molecules, which are used in subsequent steps of cellular respiration.
Review the answer choices and match the net ATP gain: Based on the calculation, the net gain of ATP per molecule of glucose during glycolysis is 2 ATP. This matches one of the provided answer choices.
Related Videos
Related Practice
