Amino acids are substituted methanes. What are the four substituent groups occupying the four valency positions?

Question

Amino acids are substituted methanes. What are the four substituent groups occupying the four valency positions? (A) Hydrogen, carboxyl group, amino group and a variable group (R) (B) Two carboxyl groups, amino group and OH (C) Two hydrogen, one carboxyl group, amino group and a variable group (R) (D) Two amino groups, one hydrogen and one carboxyl group

Tardigrade Admin · Accepted Answer

The four substituent groups occupying the four valency positions in an amino acids are hydrogen, carboxyl group, amino group and a variable group designated as R-group.

Q. Amino acids are substituted methanes. What are the four substituent groups occupying the four valency positions?

Hydrogen, carboxyl group, amino group and a variable group (R)

Two carboxyl groups, amino group and OH

Two hydrogen, one carboxyl group, amino group and a variable group (R)

Two amino groups, one hydrogen and one carboxyl group

The four substituent groups occupying the four valency positions in an amino acids are hydrogen, carboxyl group, amino group and a variable group designated as $R$ -group.