OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They store energy
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They help build proteins
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They make up cell walls
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They provide insulation
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Detailed explanation-1: -Most of the energy required by the human body is provided by carbohydrates and lipids. As discussed in Chapter 3 “Carbohydrates", glucose is stored in the body as glycogen. While glycogen provides a ready source of energy, lipids primarily function as an energy reserve.
Detailed explanation-2: -Similarities: Complex carbohydrates (e.g. polysaccharides) and lipids both contain a lot of chemical energy and can be used for energy storage.
Detailed explanation-3: -Answer and Explanation: Carbohydrates and lipids are able to store energy in their bonds.
Detailed explanation-4: -However, the creation of triglycerides and lipids is an efficient way of storing the energy available in carbohydrates. Triglycerides and lipids, high-energy molecules, are stored in adipose tissue until they are needed.
Detailed explanation-5: -They are all organic compounds, that is, they contain the element carbon. Carbohydrates and lipids both contain carbon (C), hydrogen (H), and oxygen (0); proteins contain these three elements plus one or more from nitrogen (N), sulphur (S) and phosphorous (P).