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

The bonds found within hair that help organize protein chains in order to build hair are called:

Peptide bonds

Ionic bonds

Disulfide bonds

Hydrogen bonds

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Verified step by step guidance

Step 1: Understand the structure of hair proteins. Hair is primarily composed of keratin, a fibrous protein. Keratin molecules are organized into chains, and these chains are held together by various types of bonds.

Step 2: Learn about disulfide bonds. Disulfide bonds are covalent bonds formed between the sulfur atoms of two cysteine amino acids. These bonds play a critical role in stabilizing the three-dimensional structure of proteins, including keratin in hair.

Step 3: Compare disulfide bonds with other types of bonds mentioned. Peptide bonds link amino acids together to form the primary structure of proteins, but they do not organize protein chains. Ionic bonds involve electrostatic interactions between charged groups, and hydrogen bonds are weaker interactions that contribute to secondary and tertiary structures but do not provide the same level of stability as disulfide bonds.

Step 4: Recognize the importance of disulfide bonds in hair. Disulfide bonds are responsible for the strength and elasticity of hair. They help organize protein chains and maintain the structural integrity of keratin.

Step 5: Conclude that disulfide bonds are the correct answer because they specifically help organize protein chains in hair, unlike peptide, ionic, or hydrogen bonds.