Subject SAT (College Board) Biology: Questions 1 of 824
MCQ▾
Question
The element found in all amino acids that is NOT found in carbohydrates is
Choices
| Choice (5) | Response | |
|---|---|---|
a. |
Hydrogen |
|
b. |
Oxygen |
|
c. |
Nitrogen |
|
d. |
Sulphur |
|
e. |
Carbon |
|
Answer
c.
Explanation
Nitrogen is the major atom that is present in amino acids that are not present in carbohydrates.
Amino acids derive their name from the amine group that bonds to one of the four covalent bonds of the central carbon atom.
The amine group consists of one nitrogen and two hydrogens and is found in all molecules known as amino acids. The amine group forms a peptide bond with the COOH complex of an adjoining amino acid in the construction of a polypeptide.
Image Showing Proteins in the Body