Last molar tooth in human beings is called:

1. Adult tooth
2. Wisdom tooth
3. Child tooth
4. Elder's tooth

The hardest substance in your body is:

1. Dentine
2. Bone
3. Cement
4. Enamel

Saliva converts starch into:

1. Glucose
2. Sucrose
3. Maltose
4. Lactose

Proteins of the milk are converted into curd by the enzyme:

1. Trypsin
2. Rennin
3. Pepsin
4. Erepsin