Table of contents

1. Introduction to Biochemistry4h 34m
2. Water3h 23m
3. Amino Acids8h 10m
4. Protein Structure10h 4m
5. Protein Techniques14h 5m
6. Enzymes and Enzyme Kinetics13h 38m
7. Enzyme Inhibition and Regulation 8h 42m
8. Protein Function 9h 41m
9. Carbohydrates7h 49m
10. Lipids5h 49m
11. Biological Membranes and Transport 6h 37m
12. Biosignaling9h 45m
Review 1: Nucleic Acids, Lipids, & Membranes2h 47m
Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway3h 12m
Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism2h 26m
Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation1h 48m

3. Amino Acids

Amino Acid Groups

Biochemistry

3. Amino Acids

Amino Acid Groups

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Multiple Choice

Which of the following is the primary building block of proteins?

Fatty acids

Amino acids

Monosaccharides

Nucleotides

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Verified step by step guidance

Step 1: Understand the structure and function of proteins. Proteins are macromolecules that play critical roles in biological systems, including enzymatic activity, structural support, and signaling. Their structure is composed of chains of smaller units called amino acids.

Step 2: Review the definition of amino acids. Amino acids are organic molecules that contain both an amino group (-NH₂) and a carboxyl group (-COOH). They are the monomers (building blocks) that link together via peptide bonds to form proteins.

Step 3: Compare the other options provided in the question. Fatty acids are components of lipids, which are involved in energy storage and membrane structure. Monosaccharides are simple sugars that serve as building blocks for carbohydrates. Nucleotides are the building blocks of nucleic acids like DNA and RNA.

Step 4: Recognize that none of the other options (fatty acids, monosaccharides, nucleotides) are directly involved in forming proteins. Proteins are exclusively made from amino acids.

Step 5: Conclude that the correct answer is amino acids, as they are the primary building blocks of proteins, forming polypeptide chains through peptide bonds.