Multiple Choice
Which two elements are always found in all amino acids?
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3. Amino Acids
Amino Acid Groups
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Which of the following is NOT a way in which amino acids can be utilized in the human body?
A
As a direct source of genetic information
B
As building blocks for protein synthesis
C
As precursors for neurotransmitter synthesis
D
As substrates for gluconeogenesis
Verified step by step guidance1
Step 1: Begin by understanding the roles of amino acids in the human body. Amino acids are versatile molecules that serve multiple functions, including protein synthesis, neurotransmitter synthesis, and energy production through gluconeogenesis.
Step 2: Analyze each option provided in the question. For example, 'As building blocks for protein synthesis' is a well-known function of amino acids, as they are the monomers that form proteins.
Step 3: Evaluate the option 'As precursors for neurotransmitter synthesis.' Certain amino acids, such as tryptophan and tyrosine, are precursors for neurotransmitters like serotonin and dopamine, respectively.
Step 4: Consider the option 'As substrates for gluconeogenesis.' Amino acids can be converted into glucose in the liver during gluconeogenesis, especially during fasting or starvation.
Step 5: Examine the option 'As a direct source of genetic information.' Amino acids do not directly encode genetic information; this is the role of nucleotides in DNA and RNA. Therefore, this option is NOT a way amino acids are utilized in the human body.
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