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 is a long chain of amino acids called?

Nucleic acid

Triglyceride

Polypeptide

Polysaccharide

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Verified step by step guidance

Step 1: Begin by understanding the structure and function of amino acids. Amino acids are the building blocks of proteins and consist of an amino group (-NH₂), a carboxyl group (-COOH), and a unique side chain (R group).

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 term for a chain of amino acids. When multiple amino acids are linked together by peptide bonds, the resulting structure is called a polypeptide. Polypeptides can fold into functional proteins.

Step 4: Differentiate between the given options. Nucleic acids are polymers of nucleotides, triglycerides are composed of glycerol and fatty acids, and polysaccharides are chains of sugar molecules. None of these are related to amino acid chains.

Step 5: Conclude that the correct term for a long chain of amino acids is 'polypeptide,' as it specifically refers to the polymer formed by amino acids linked via peptide bonds.