The notes and everything I promised will be up by Thursday, yes, today...
There seems to be something wrong with my connection between the scanner and desktop...
Anyway, anwsers for Biology Practical Test -- Digestion. Decided that I should type it out.
1. Describe the steps you will carry out to test for the presence of glucose in unknown solutions A, B and C.
- 1) Equal volume of Benedict's solution to unknown solution.
- 2) Shake well and heat in boiling water for 2 - 3 minutes.
- 3) If glucose is present, so it turns brick-red precipiate.
3. Record your observations and results in the table below. (Describe the color changes observed)
(click for larger image.) Keywords have been highlighted. Miss Vanessa say we have to state what type of state it is, like is it a solution, precipitate all these. And and we can't just simply write one word "blue" or "brown". We have to be specific =)
4a. From your observations above, indicate if glucose or starch is present(YES or NO).
b. From your results above, state where in the alimentary canal can you find the unknown solution.
Alright, that's it.
Shall update the revision worksheet later on. My father's waking up. I don't wish to get nagged! =x
Much Loves,
geokshan :)
geokshan :)