Biochemistry

perhydrophenanthrene In a young healthy body, a constant blood cholesterol level of 2.97-8.79 mol I L (115-340 mg) is maintained. The synthesis of this steroid in tissues increases with a small intake of food and decreases with a high content of it in the products included in the diet. The daily human needfor cholesterol is 0.5-1.0 g . The normalization of impaired cholesterol metabolism is facilitated by the inclusion of sources of lipotropic substances (phosphatides, vitamins, etc.) in food . QUESTIONS AND TASKS: 1. What are lipids and what are their functions in the body? 2. Tripalmitin, triolein, palmitodiolein were found in the composition of pork fat. Write their formulas. 3. Phospholipids were found in egg yolk. Write their formulas and list the main functions. 4. What animal steroid contributes to the development of atherosclerosis of blood vessels? 5. Write the cholesterol formula and indicate its value for the human body. 6. What are the main functions of lipoproteins, glycolipids. 7. What foods are sources of polyunsaturated fatty acids? 133