Multiple Choice
2. Which of the following is NOT a catabolic process?
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7. Energy and Metabolism
Introduction to Metabolism
Multiple Choice
In animals, what typically happens to excess carbohydrates after immediate energy needs are met?
A
They are immediately broken down into amino acids.
B
They are used to synthesize nucleic acids directly.
C
They are converted into glycogen and stored in the liver and muscles.
D
They are excreted unchanged in the urine.
Verified step by step guidance1
Understand the role of carbohydrates in animals: Carbohydrates are primarily used as a source of energy. When consumed, they are broken down into glucose, which is used for immediate energy needs through cellular respiration.
Recognize what happens when energy needs are met: If the body has sufficient energy, excess glucose is not immediately used. Instead, it is stored for future use.
Learn about glycogen synthesis: Excess glucose is converted into glycogen through a process called glycogenesis. This occurs primarily in the liver and muscles, where glycogen serves as a storage form of energy.
Understand why other options are incorrect: Carbohydrates are not directly broken down into amino acids or used to synthesize nucleic acids. Additionally, they are not excreted unchanged in the urine unless there is a medical condition like diabetes.
Conclude the correct process: Excess carbohydrates are converted into glycogen and stored in the liver and muscles, ensuring the body has a reserve of energy for later use.
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