In most eukaryotic cell, the net gain of ATP per glucose molecule oxidised is 38 ATP.

Explanation

To determine the net gain of ATP per glucose molecule oxidized in most eukaryotic cells, we can break down the process of cellular respiration into its main stages: glycolysis, the citric acid cycle (Krebs cycle), and oxidative phosphorylation. Here's a step-by-step solution:

### Step 1: Glycolysis
- Glycolysis occurs in the cytoplasm and is the first step in the breakdown of glucose.
- During glycolysis, 2 ATP molecules are produced directly.
- Additionally, 2 molecules of NADH are produced, which can be converted to ATP during oxidative phosphorylation. Each NADH is equivalent to 3 ATP.

**Calculation for Glycolysis:**
...