Answered

The pH inside the stomach is acidic (1.5 to 3.5). The activity levels of four enzymes at various pH ranges are shown in the table.

| pH Range | Enzyme I Activity | Enzyme II Activity | Enzyme III Activity | Enzyme IV Activity |
|----------|-------------------|--------------------|---------------------|--------------------|
| 2-4 | Inactive | Inactive | High | Low |
| 4-6 | Inactive | Low | Low | High |
| 6-7 | Low | High | Inactive | Low |
| 7-9 | High | Low | Inactive | Inactive |
| 9-11 | Low | Inactive | Inactive | Inactive |

Based on the information shown, which enzyme would work best in the stomach?

A. Enzyme I
B. Enzyme II
C. Enzyme III
D. Enzyme IV



Answer :

GinnyAnswer
To determine which enzyme would work best in the stomach based on the given pH range of 1.5 to 3.5, we need to look at the activity levels of the enzymes within the relevant pH range provided in the table.

Given the pH range of the stomach is 1.5 to 3.5, we should consider the enzyme activity in the pH range closest to this, which is the 2-4 range. Here is the activity of each enzyme in that range:

- Enzyme I: Inactive
- Enzyme II: Inactive
- Enzyme III: High
- Enzyme IV: Low

Since we need an enzyme that is most active in the acidic environment of the stomach (pH 1.5 to 3.5), our best candidate will be the enzyme with the highest activity in the 2-4 pH range.

From the table:

- Enzyme I is inactive in the 2-4 range.
- Enzyme II is inactive in the 2-4 range.
- Enzyme III has high activity in the 2-4 range.
- Enzyme IV has low activity in the 2-4 range.

Therefore, the enzyme with the highest activity in the relevant pH range is Enzyme III.

Answer: C. Enzyme III

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