Lipids, Fats, and Biochemistry

Carbohydrates are the primary energy source in most human diets, typically comprising 45-65% of total caloric intake. They are the body's preferred fuel for energy production. Proteins are needed for tissue repair and growth, lipids (fats) provide concentrated energy and cell membrane structure, while minerals are required in smaller amounts for various metabolic functions as micronutrients.

Coenzyme is a vitamin that acts with an enzyme and enhances its activity.

This is the case when there is tremendous increase in the amount of blood sugar level. Here first glycogenesis begins and when the capacity of liver and muscles is full then the remaining extra glucose starts getting converted into fat.

Fats act as storage medium  of energy and organ heat insulator.

Animal protein is complete protein and contains all 20 amino acids, which are used by the body to synthesize new proteins.

They are the cheapest and most readily available sources of energy. Simple carbohydrates are digested faster and converted into glucose which is used by the body for energy in the blood as glucose or stored in either the muscles or the liver as glycogen. If we eat more carbohydrates than we need for our energy requirements, the excess is converted to fat which is stored in our body.

Phospholipids are phosphorus-containing lipids, such as lecithin and cephalin that are composed mainly of fatty acids, and a phosphate group. Chemically DPL is phospholipid. Phospholipid is the main component of biological membranes.

Fats contain larger proportion of carbon and hydrogen. 

Cream is an example of animal fat.

This is the correct option. Fats give 2.25 times more energy than carbohydrates.

This is the correct option. Fats and carbohydrates are the nutrients that are used by an organism mainly as a source of energy.

Cholesterol comprises 26% of total lipids in the human myelin sheath.

Cholesterol comprises 25% of total lipids in RBC cell membrane.

The meibomian glands or tarsal glands are a special kind of sebaceous gland at the rim of the eyelids inside the tarsal plate responsible for the supply of meibum, which is an oily substance that prevents evaporation of the eye's tear film. Meibum prevents tear spillage onto the cheek, trapping tears between the oiled edge and the eyeball, and makes the closed lids airtight.

Sweets, fried foods, butter, and bakery products are all high in fats. Sweets contain fats from butter/oil, fried foods absorb cooking oils, butter is nearly 100% fat, and bakery products use butter/oil. These foods do not contain roughage (fiber), significant proteins, minerals, or vitamins - their primary macronutrient is fat.