Question

The diagram below shows two processes (Process 1 and Process 2) in which cells can release energy from food. The process used depends on the presence or absence of oxygen.

Use the diagram below to help you respond to the following:

1. Identify Process 1 and Process 2.
2. List the number of ATP produced by Process 1 and Process 2.

diagram showing that krebs cycle and electron transport chain occur with oxygen. lactic acid fermentation or alcoholic fermentation occur without oxygen.

Answer 1

process 1 is aerobic respiration

process 2 is anaerobic respiration

process 1 produces 38 ATP molecules

process 2 produces 2 ATP molecules

Step-by-step explanation:

In both lactic and alcoholic fermentation, only 2 molecules of ATP are formed when a molecule of glucose is broken down in absence of oxygen. In aerobic respiration, glucose is broken down in presence of oxygen forming 38 ATP molecules.