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Multiple Choice
Carbohydrates are used in our bodies mainly for __________.
A
membrane construction
B
structural molecules, such as hair and fingernails
C
building genetic material
D
lipid storage
E
energy storage and release
Verified step by step guidance
1
Understand the role of carbohydrates in biological systems. Carbohydrates are organic molecules composed of carbon, hydrogen, and oxygen, and they are one of the primary sources of energy for living organisms.
Recognize that carbohydrates are broken down into glucose, which is a simple sugar that cells use for energy. This process is known as cellular respiration, where glucose is converted into ATP (adenosine triphosphate), the energy currency of the cell.
Differentiate between the functions of various macromolecules. For example, proteins are often used for structural purposes (like hair and fingernails), nucleic acids are involved in genetic material, and lipids are used for long-term energy storage and membrane construction.
Identify that the primary function of carbohydrates is related to energy. They are not primarily used for membrane construction, structural molecules, building genetic material, or lipid storage.
Conclude that the main role of carbohydrates in the body is for energy storage and release, as they provide a quick source of energy through the breakdown of glucose.