BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Lipids are an efficient source of energy (9kcal per gram) that the body stores in relative abundance. They also play an important role as building blocks for cell membranes, hormones, and physiologically active substances.

Detailed explanation-2: -To obtain energy from fat, triglycerides must first be broken down by hydrolysis into their two principal components, fatty acids and glycerol. This process, called lipolysis, takes place in the cytoplasm. The resulting fatty acids are oxidized by -oxidation into acetyl CoA, which is used by the Krebs cycle.

Detailed explanation-3: -The answer is e) All statements about lipids are correct. They are all hydrophobic which means that they are soluble in organic solvents and insoluble in water.

Detailed explanation-4: -Fats (lipids) Fats are the primary long-term energy storage molecules of the body. Fats are very compact and light weight, so they are an efficient way to store excess energy.