Monday, 6 April 2020

TNPSC STUDY MATERIAL -ENGLISH MEDIUM - BIOLOGY - 4

FAT-SOLUBLE VITAMINS

Vit.A(Retinol) – Xerophthalmia due to non function of lacrimal gland of conjunctiva. night-blindness

Vit.D (Ergocalciferol and Cholecalciferol) – Rickets, Osteomalacia

Vit E (Tocopherol) – Reversible sterility

Vit K (Phylloquinone) - Haemorrhages


Water:     - Important in digestion, transportation, excretion and to regulate body temperature (body contains 65% water)

ROUGHAGE

- Fibrous material present in the cell wall of plants.

- Mainly contains cellulose.

- It does not provide energy but only helps in retaining water in the body.

Note:

- Excessive intake of food calories leads to obesity. It leads to high B.P. and heart problems and the person gets prone to diabetes, hypertension and other disorders.

- Excessive intake of saturated fats like butter, ghee, etc, leads to hypercholesterolemia. 

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