LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

BIOCHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How does your body use lipids?
A
Primary source of energy
B
energy storage and insulation
C
speeds up chemical reaction
D
defense
Explanation: 

Detailed explanation-1: -In between meals and during exercise your body relies on these fats stores to provide energy. Lipids are also used to insulate and protect your body. You have a layer of fat just below your skin that helps to keep your internal body temperature regular despite the external temperature.

Detailed explanation-2: -Fats are used to store energy within their chemical bonds. They also serve as insulation in organisms that maintain a constant body temperature, such as mammals and birds. The building blocks of fats are triacylglycerol molecules. These molecules are composed of one glycerol and three fatty acids.

Detailed explanation-3: -Subcutaneous fat, or fat underneath the skin, insulates the body from extreme temperatures and helps keep the internal climate under control. It pads our hands and buttocks and prevents friction, as these areas frequently come in contact with hard surfaces.

Detailed explanation-4: -Triglyceride is the most common lipid that is used for energy storage. Triglycerides are the main body fat constituents for vertebrates. They are tri-esters comprising a glycerol molecule that is bound to three fatty acid molecules. The unused calories of our body are stored in the form of triglycerides.

Detailed explanation-5: -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.

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