7Biochemical Tests Laboratory MethodsMedium1 mark
Three food samples are tested with reagents for the presence of different biological molecules.
Each sample contains a different biological molecule.
Which row correctly shows the food samples that contain carbohydrate?
key
✓ = food sample that contains carbohydrate
✗ = food sample that does not contain carbohydrate
| food sample that turns reagent black | food sample that turns reagent purple | food sample that turns reagent green | |
|---|---|---|---|
| A | ✓ | ✓ | ✗ |
| B | ✗ | ✓ | ✗ |
| C | ✗ | ✗ | ✓ |
| D | ✓ | ✗ | ✓ |