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

Proteins consist of a chain of some combination of how many unique amino acids?

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Verified step by step guidance

Step 1: Understand the structure of proteins. Proteins are macromolecules made up of chains of amino acids linked together by peptide bonds.

Step 2: Learn about amino acids. Amino acids are organic molecules that serve as the building blocks of proteins. Each amino acid has a central carbon atom bonded to an amino group (-NH2), a carboxyl group (-COOH), a hydrogen atom, and a unique side chain (R group).

Step 3: Recognize the diversity of amino acids. In biochemistry, there are 20 standard amino acids that are encoded by the genetic code and used universally in protein synthesis.

Step 4: Clarify the genetic code. While the genetic code consists of 64 codons (triplets of nucleotides), only 20 of these codons correspond to the standard amino acids used in protein synthesis. The remaining codons serve as start or stop signals during translation.

Step 5: Conclude that proteins are composed of chains of 20 unique amino acids, which combine in various sequences to form the vast diversity of proteins found in living organisms.