If tyrosine becomes a conditionally essential amino acid in the body, which of the following statements is true? a. Tyrosine should be taken in through the diet as the body is unable to produce it. b. Tyrosine is produced in excess by the body, and its intake through the diet should be limited. c. Phenylalanine is produced using tyrosine and should be supplied in adequate quantities. d. The excess absorption of phenylalanine prevents the absorption of tyrosine by the body. e. Tyrosine is not required by the body for the synthesis of other essential amino acids.

Tyrosine is an organic chemical compound. It performs important biological tasks as an intracellular transmitter (it can be phosphorylated by protein kinases), and is also a precursor to important hormones and biologically active substances (thyroxine, triiodothyronine, adrenaline, noradrenaline and dopamine).

It is an endogenous amino acid, which means that the human body and most animals are able to synthesize it provided that there is sufficient supply of phenylalanine, from which tyrosine differs by the presence of one hydroxyl group.

Tyrosine is very important for the proper functioning of the thyroid and pituitary gland. Lack of this amino acid causes hypothyroidism, which can manifest itself in the form of fatigue and exhaustion. Reducing the amount of tyrosine in the body causes a deficiency of norepinephrine and dopamine, which can cause depression.

Larus Larus · Answer 2 · 2022-03-15T12:57:27+01:00

Of the given statements, the correct statement would be that tyrosine should be taken in through the diet as the body is not able to generate it.

What are conditionally essential amino acids?

These are the amino acids, which become essential or important in some of the circumstances. Some of the non-essential amino acids like cysteine and tyrosine are known as conditionally essential or semi-essential amino acids as they seem to run low at the time of health conditions like being sick or during infancy.

These amino acids are generally non-essential, however, they are required to be supplied by the diet during special situations like during health conditions and during infancy when the requirement for it enhances the tendency of the body to generate it.

Thus, the correct answer is option a.

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