WorksheetsLevel 1 Biological Molecules - Nutrients
Total questions: 10
Worksheet time: 5mins
Q1 When I add iodine solution to a piece of bread (bread contains starch), what is the final colour of iodine?
Q2 When I add iodine solution to a piece of paper towel, what is the final colour of iodine?
Q3 When I conduct a Benedict's test on a solution of grape juice, what will I observe?
Q4 When I conduct a Benedict's test on a solution of very dilute grape juice, what will I observe?
Blue Benedict's solution will turn blue-black
Q5 After adding Benedict's solution to my food sample in a boiling tube, what is the next step to conduct the test?
Q6 When I add biuret solution to a solution of egg white (contains proteins), what is my final colour?
Q7 When I add biuret solution to a solution of oil, what is my final colour?
Q8 When I conduct the ethanol emulsion test to a liquid food sample of nuts, what will I observe
Q9 When I conduct the ethanol emulsion test to a solid biscuit, what will I observe?
The clear solution will remain clear
The clear solution will form a cloudy white emulsion
The clear solution will turn violet
The clear solution will form a brick-red precipitate
The table shows the composition of four foods A, B, C and D, in grams per 100 g portion.
Which food sample would be most useful for building new cells?
A
B
C
D
