Lipids, Fats, and Biochemistry

This option is correct. Administration of sphingosine-1-phosphate protects oocytes from chemotherapeutic agents in vitro as well as in vivo.

This option is correct. Resolvin is a metabolite of the polyunsaturated omega-3 fatty acids, whereas saulpholipid is a lipid which possesses a sulphur-containing functional group.

The triglycerides are esters of glycerol with long chain fatty acids. Fatty acids always have an even number of carbons and may be saturated e.g, palmitic acid (C₁₅H₃₁COOH) and stearic acid (C₁₇H₃₅COOH) or unsaturated e.g., oleic acid (C₁₇H₃₃COOH) and linolenic acid (C₁₇H₂₉COOH). The three fatty acids in triglycerides may be same or different. Fats are glycerides of saturated fatty acids e.g., triplamitin and tristearin.

Cholesterol is a constituent of membrane structure and it synthesizes bile acids, hormones and vitamin D. It is the principal sterol of higher animals, abundant in nerve tissues and gallstones.

There are esters of long chain saturated and unsaturated fatty acids with long chain monohydroxy alcohols. The fatty acids range between C₁₄ and C₃₆ and the alcohols range from C₁₆ to C₃₆. Most of the waxes are mixtures.

All are the functions of fats.

Phospholipids are used as detergents to emulsify fat for transport within the body. They act as cellular metabolic regulators.They protect internal organs, serve as insulating materials and give shape and smoothness to the body.They serve as a source of fat soluble vitamins.

The triglycerides are esters of glycerol with long chain fatty acids. Fatty acids always have an even number of carbons and may be saturated e.g, palmitic acid (C₁₅H₃₁COOH) and stearic acid (C₁₇H₃₅COOH) or unsaturated e.g., oleic acid (C₁₇H₃₃COOH) and linolenic acid (C₁₇H₂₉COOH). The three fatty acids in triglycerides may be same or different. Fats are glycerides of saturated fatty acids e.g., triplamitin and tristearin. Oils contains unsaturated fatty acids e.g., tristearin. Oils contain unsaturated fatty acids e.g., triolein. a-oleo-b-palmito-a'- stearin is an example of mixed glyceride.

A candle is a solid block of fuel (commonly wax) and an embedded wick, which is lit to provide light, and sometimes heat. Gel candles are made from a mixture of paraffin and plastic.

The triglycerides are esters of glycerol with long chain fatty acids. Fatty acids always have an even number of carbons and may be saturated e.g, palmitic acid (C₁₅H₃₁COOH) and stearic acid (C₁₇H₃₅COOH) or unsaturated e.g., oleic acid (C₁₇H₃₃COOH) and linolenic acid (C₁₇H₂₉COOH).The three fatty acids in triglycerides may be same or different. Fats are glycerides of saturated fatty acids e.g., triplamitin and tristearin. Oils contains unsaturated fatty acids e.g., tristearin.

Phospholipids are the constituents of cell mebrane and regulate membrane permeability. Phospholipids are also used as detergents to emulsify fat for transport within the body. They act as cellular metabolic regulators.They protect internal organs, serve as insulating materials and give shape and smoothness to the body. Accumulation of fat in liver is prevented by phospholipids.

The triglycerides are esters of glycerol with long chain fatty acids. Fatty acids always have an even number of carbons and may be saturated e.g, palmitic acid (C₁₅H₃₁COOH) and stearic acid (C₁₇H₃₅COOH) or unsaturated e.g., oleic acid (C₁₇H₃₃COOH) and linolenic acid (C₁₇H₂₉COOH).The three fatty acids in triglycerides may be same or different.Oils contains unsaturated fatty acids e.g., tristearin. Oils contain unsaturated fatty acids e.g., triolein. A-oleo-b-palmito-a'- stearin is an example of mixed glyceride.

Fats can be kept fresh and unrancid longest by keeping at very cool temperatures and in the dark, and away from exposure to oxygen & moisture of the atmosphere. Ideally this would mean in refrigeration without light or in a light-blocking container, and either vacuum-sealed or else with airspace filled with nitrogen or other nontoxic gas without oxygen.

Main reserve food in plants is starch and in animals is glycogen.

Simple lipids are known as triglycerides or triacyl glycerols . Some of these are solids at room temperature , while others are liquids . Solids are known as fats and liquids are known as oils . Some examples are tripalmitin , tristearin and triolein .