Food and nutrition

The reaction is an example of

• condensation.

• oxidation.

• hydrolysis.

• hydrogenation.

Which of the following food substances most readily provide energy for the body?

• lipids

• proteins

• monosaccharides

• vitamins

Taking fish liver oils (魚肝油) may help people suffering from rickets (佝僂病) to obtain the nutrients they are deficient in. This is because fish liver oils are rich in

• iron.

• lipids.

• vitamin D.

• vitamin A.

The diets of vegetarians usually include beans to make up for the lack of

• proteins.

• carbohydrates.

• vitamins.

• lipids.

People who suffer from bleeding gums (牙肉出血) may lack

• calcium.

• iron.

• vitamin C.

• vitamin D.

People who suffer from anaemia (貧血) may lack

• calcium.

• iron.

• vitamin C.

• vitamin D.

Calcium is important for the formation of

• haemoglobin.

• bones and teeth.

• hair.

• skin.

Which of the following are the functions of proteins in humans?

(1) for making enzymes

(2) for growth

(3) for repairing body tissues

• (1) and (2) only

• (1) and (3) only

• (2) and (3) only

• (1), (2) and (3)

Which of the following can be used to test for the presence of reducing sugars?

• Benedict’s test

• iodine test

• DCPIP solution

• grease spot test

Which of the following food substances most readily provide energy for the body?

• lipids

• proteins

• monosaccharides

• vitamins