Tuentlying the importance of essential amino aclay
there are twenty amino acids in living organisms. ten of these are referred to as essential amino acids.
why are they called essential amino acids?

a: these amino acids are the only ones that are important for the body to function properly.

b: these amino acids cannot be made by the human body and must be consumed in one's diet.

c: these amino acids are the only ones that are made by the human body.

The correct answer is B: These amino acids cannot be made by the human body and must be consumed in one"s diet.

Explanation:

The amino acids those are not synthesized by our body but should be consumed by us through diet to meet the body"s demand for those amino acids.These amino acids are known as essential amino acids.

Example  methionine,threonine,phenylananine,valine tryptophan,lysine,leusine,isoleucine,histidine.

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it has one origin of replication, but it proceeds in two directions - d)