Indicate True (T) and False (F) Statements Below Regarding the Cellular

Short Answer

Indicate true (T) and false (F) statements below regarding the cellular metabolism of nucleotides and amino acids. Your answer would be a four-letter string composed of letters T and F only, e.g. TTTT.
( ) Nitrogen fixation occurs in the mitochondria in most animal cells to generate amino acids.
( ) All 20 natural amino acids must be provided in our diet and are therefore "essential."
( ) There are NO essential nucleotides that must be provided in the diet.
( ) Catabolism of amino acids in our body leads to the production of urea which is excreted.
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