The richest sources of vitamin-B₁₂ are 

1. goat's liver and Spirulina

2. chocolate and green gram

3. rice and hen's egg

4. carrot and chicken's breast

Which one of the following pairs of food components in humans reaches the stomach totally undigested? 

1. Protein and starch

2. Starch and fat

3. Fat and cellulose

4. Starch and cellulose

Lactose is composed of

1. glucose + fructose

2. glucose + glucose

3. glucose + galactose

4. fructose + galactose

Which one of the following amino acids is an essential part of human diet ?

1. Glycine

2. Phenylalanine

3. Serine

4. Aspartic acid

Which of the following pair is characterised by swollen lips, thick pigmented skin of hands and legs and irritability ?

1. Thiamine      ---- Beri-Beri

2. Protein         ---- Kwashiorkor

3. Nicotinamide ---- Pellagra

4. Iodine          ---- Goitre

Fructose is absorbed into the blood through mucosa cells of intestine by the process called 

1. active transport

2. facilitated transport

3. simple diffusion

4. co-transport mechanism

What will happen if the secretion of parietal cells of gastric glands is blocked with an inhibitor?

1. Gastric juice will be deficient in chymosin

2. Gastric juice will be deficient in pepsinogen

3. In the absence of HCl secretion, inactive pepsinogen is not converted into the active enzyme pepsin

4. Enterokinase will not be released from the duodenal mucosa and so trypsinogen is not converted to trypsin

The haemorrhagic disease of new born is caused due to the deficiency of 

1. vitamin-A

2. vitamin-B₁

3. vitamin-B₁₂

4. vitamin-K

In a person of advanced age, the hair become thinner gradually. It happens because of decrease in

1. synthesis of glucose

2. synthesis of proteins

3. energy availability

4. blood supply

When breast feeding is replaced by less nutritive food low in proteins and calories; the infants below the age of one year are likely to suffer from 

1. marasmus

2. rickets

3. kwashiorkor

4. pellagra