The total number of carbon atoms present in tyrosine, an amino acid, is _____

We need to find the total number of carbon atoms in tyrosine.

Tyrosine is an amino acid with the molecular formula C9H11NO3.

Its structure is 4-hydroxyphenyl alanine: it has a benzene ring (6 carbons) with an OH group, connected via a -CH2- group to the amino acid backbone -CH(NH2)-COOH.

Counting carbon atoms:

- Benzene ring: 6 carbons

- CH2- group: 1 carbon

- alpha-carbon (CH): 1 carbon

- Carboxyl group (COOH): 1 carbon

Total = 6 + 1 + 1 + 1 = 9 carbon atoms.

The answer is 9