CAPE Biology Unit 1 · 2011 · Paper 1 · Question Q4
Item 4 refers to the following information.
Samples of a solution containing carbohydrates are treated as follows:
| Sample | Treatment | Result |
|---|---|---|
| 1. | Benedict's Reagent | No colour change |
| 2. | HCl acid (warm); \text{Na}_2\text{CO}_3; Benedict's Reagent | Brick-red precipitate |
| 3. | Amylase added, then Benedict's solution | Brick-red precipitate |
Which of the following carbohydrates are MOST likely present in the solution?
- (A)Sucrose and starch
- (B)Maltose and starch
- (C)Glucose, sucrose, glycogen
- (D)Glucose, maltose, glycogen
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