What is the chemical test for starch?
Iodine solution turns blue-black
Biuret reagent turns purple
Iodine turns yellow-brown
What is the function of water in the diet?
Prevent constipation
Used as a solvent
Makes haemoglobin
Fat is needed in the diet for energy and what other function?
Insulation
Growth and repair
A brick red precipitate forms when a solution is heated with Benedict's reagent. What could this solution contain?
Glucose
Protein
Lipase
Which component of the diet prevents constipation?
Fat
Carbohydrate
Fibre
Which of these can cause skin cancer?
HPV
UV
Alcohol
Which substance in tobacco can cause emphysema?
Tar
Nicotine
Carbon monoxide
What is a long-term effect of excessive alcohol use?
Blurred vision.
Liver damage.
Pale skin.
Why are proteins important in a balanced diet?
They provide vital minerals
They are a high energy source
They are needed for growth and repair
Which biological molecule contains the most energy?
Which reagent is used to test for the presence of fat?
Biuret
Limewater
Ethanol