Biology Answer the following questions

The amount of heat liberated by complete combustion of lg food in a bomb calorimeter is termed as gross calorific (gross energy) value.

The process of swallowing is called deglutition. Medulla oblongata controls the deglutition.

Balanced diet is a diet which contains proper amount of carbohydrates, fats, vitamins, proteins and minerals to maintain a good health.

The life processes which are essential and provide us energy are nutrition and respiration.

Salivary amylase = 6.8
Trypsin = 8
Nucleotidase = 7.5
Pepsin = 2

Major causes of disorders like Kwashiorkor and Marasmus are unavailability of nutritious food. Poverty, large family size, ill spacing of children, early termination of breast feeding and overdiluted milk arc a few causes.

The absorbed food material finally reaches the tissue and becomes a part of protoplasm. This is called as assimilation.

Simple diffusion, osmosis, facilitated transport and active transport.

Peristaltic movements of muscularis layer help in proper mixing of digestive juices with chyme.

The intestinal juice contains various enzymes like dipeptidases, lipases, disaccharidases, maltase, sucrase and lactase.

The gastro-oesophageal sphincter controls the passage of food into the stomach.

Saliva contains 98% water and 2% other constituents like electrolytes (sodium, potassium, calcium, chloride, bicarbonates), digestive enzyme, salivary amylase and lysozyme.

The study of teeth with respect to their number, arrangement, development etc. is known as dentition.

Digestion is defined as the process by which the complex, non-diffusible and non-absorbable food substances are converted into simple, diffusible and assimilable substances.

Carbohydrates, proteins, fats, vitamins, minerals, water and fibres in adequate amount are the dietary needs of human being.