Multiple Choice
Which component of an amino acid is primarily responsible for its unique chemical properties?
41
views
3. Amino Acids
Amino Acid Groups
Struggling with Biochemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which chemical group is considered the fundamental building block of amino acids and, consequently, proteins?
A
Carboxyl group (\(-COOH\))
B
Methyl group (\(-CH_3\))
C
Hydroxyl group (\(-OH\))
D
Amino group (\(-NH_2\))
Verified step by step guidance1
Step 1: Understand the structure of amino acids, which are the building blocks of proteins. Each amino acid contains a central carbon atom (α-carbon) bonded to four groups: an amino group (
), a carboxyl group (
), a hydrogen atom, and a variable side chain (R-group).
Step 2: Recognize that the amino group (
) is essential for the formation of peptide bonds during protein synthesis. It reacts with the carboxyl group (
) of another amino acid to form these bonds.
Step 3: Compare the chemical groups listed in the problem. The methyl group (
) and hydroxyl group (
) are not fundamental to the structure of amino acids. The carboxyl group (
) is important but not the defining feature.
Step 4: Focus on the amino group (
) as the defining chemical group that distinguishes amino acids from other organic molecules. It is this group that gives amino acids their name and plays a critical role in protein structure and function.
Step 5: Conclude that the amino group (
) is the fundamental building block of amino acids and, consequently, proteins.
Related Videos
Related Practice
Amino Acid Groups practice set
Problem sets built by lead tutorsExpert video explanations