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

Which of the following is true about proteins?

Proteins are made up of nucleotides joined by phosphodiester bonds.

Proteins are composed of amino acids linked by peptide bonds.

Proteins cannot function as enzymes in biological systems.

Proteins are the primary source of genetic information in cells.

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Verified step by step guidance

Step 1: Begin by identifying the basic building blocks of proteins. Proteins are composed of amino acids, not nucleotides. Nucleotides are the building blocks of nucleic acids like DNA and RNA.

Step 2: Understand the type of bond that links amino acids together in proteins. Amino acids are joined by peptide bonds, which are formed through a condensation reaction between the amino group of one amino acid and the carboxyl group of another.

Step 3: Evaluate the statement about proteins functioning as enzymes. Proteins can indeed function as enzymes in biological systems. Enzymes are specialized proteins that catalyze biochemical reactions.

Step 4: Analyze the claim about proteins being the primary source of genetic information. This is incorrect because genetic information is stored in nucleic acids (DNA and RNA), not proteins.

Step 5: Conclude that the correct statement is: 'Proteins are composed of amino acids linked by peptide bonds.' This aligns with the fundamental structure and function of proteins in biochemistry.