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

1. Introduction to Biochemistry

Proteins

Biochemistry

1. Introduction to Biochemistry

Proteins

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Multiple Choice

What does a long chain of amino acids create?

A fatty acid

A protein

A polysaccharide

A nucleic acid

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Verified step by step guidance

Step 1: Understand the structure of amino acids. Amino acids are organic molecules that contain both an amino group (-NH₂) and a carboxyl group (-COOH), along with a unique side chain (R group) that determines their properties.

Step 2: Learn how amino acids link together. Amino acids are joined by peptide bonds, which are formed through a dehydration reaction between the carboxyl group of one amino acid and the amino group of another.

Step 3: Recognize the result of this linkage. A long chain of amino acids linked by peptide bonds forms a polypeptide. Polypeptides are the building blocks of proteins.

Step 4: Understand the relationship between polypeptides and proteins. Proteins are functional molecules that consist of one or more polypeptides folded into specific three-dimensional structures. These structures are essential for their biological functions.

Step 5: Eliminate incorrect options. Fatty acids, polysaccharides, and nucleic acids are not formed from chains of amino acids. Fatty acids are components of lipids, polysaccharides are carbohydrates, and nucleic acids are composed of nucleotides.