OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They are ingested but not used in protein synthesis.
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They are stored in adequate amounts so are not needed in the diet.
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They are less important in cells than essential amino acids.
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They can be synthesised from essential amino acids.
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Detailed explanation-1: -Nonessential means that our bodies can produce the amino acid, even if we do not get it from the food we eat. Nonessential amino acids include: alanine, arginine, asparagine, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine.
Detailed explanation-2: -Synthesis of Nonessential Amino Acids The liver has enzymes such as transaminases and is responsible for nonessential amino acid synthesis through a process called transamination.
Detailed explanation-3: -Nonessential amino acids can also be made from other amino acids. For example, the essential amino acid phenylalanine is a precursor of the nonessential amino acid, tyrosine.
Detailed explanation-4: -Nonessential amino acids are mainly synthesized from glucose (alanine, arginine [from the urea cycle in hepatic cells], asparagine, aspartate, cysteine, glutamate, glutamine, glycine, proline, and serine), except for tyrosine, which is synthesized from phenylalanine.