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

4. Protein Structure

Protein Folding

Biochemistry

4. Protein Structure

Protein Folding

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Multiple Choice

The proper three-dimensional shape and folding of a protein is assisted by _________.

ribosomes

molecular chaperones

phospholipids

DNA polymerases

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Verified step by step guidance

Understand the concept of protein folding: Proteins are synthesized as linear chains of amino acids, but they must fold into specific three-dimensional shapes to become functional. This folding process is critical for their biological activity.

Learn about molecular chaperones: Molecular chaperones are specialized proteins that assist in the proper folding of other proteins. They prevent misfolding and aggregation, ensuring the protein achieves its correct structure.

Eliminate incorrect options: Ribosomes are involved in protein synthesis, not folding. Phospholipids are components of cell membranes and do not assist in protein folding. DNA polymerases are enzymes involved in DNA replication, unrelated to protein folding.

Recognize the correct answer: Molecular chaperones are the correct choice because they directly assist in the folding and stabilization of proteins during and after synthesis.

Connect the concept to broader biochemistry: Protein folding is essential for maintaining cellular function, and molecular chaperones play a key role in preventing diseases caused by misfolded proteins, such as Alzheimer's and Parkinson's.