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10 questions
Which one of the following is the basic unit of proteins?
fatty acids
amino acids
glucose
glycerol
A food was chemically tested with a solution that changed from yellow to blue/black? Which solution was the food tested with?
Biuret
ethanol
Benedict's
iodine
Glycerol and fatty acids make up which one of the following food molecules?
lipids
simple carbohydrate
complex carbohydrates
proteins
If a food is tested with ethanol and then water, what nutrient is the food being tested for?
proteins
lipids
simple sugars
complex sugars
Starch is an example of what type of food molecule?
protein
simple carbohydrate
complex carbohydrate
lipid
Which food molecule is being tested for with heating and the use of a blue coloured solution?
starch
glucose
fat
protein
All complex carbohydrates are made up of long chains of smaller molecules called
fatty acids
glycerol
amino acids
glucose
Which chemical food test involves a positive result of a cloudy white emulsion?
protein
lipid
glucose
starch
If glucose is present, which one of the following observations would occur?
yellow to blue colour change
blue to orange colour change
blue to purple colour change
brown to black colour change
Which one of the following is not one of the three main types of biological molecules that structurally make up cells?
lipids
fibre
proteins
carbohydrates
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