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 protein-based filament fiber is known for its natural luster?

Elastin

Keratin

Collagen

Silk

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Verified step by step guidance

Understand the question: The problem is asking about a protein-based filament fiber that is known for its natural luster. This requires knowledge of the structural and functional properties of proteins.

Review the options: Elastin, Keratin, Collagen, and Silk are provided as choices. Each of these is a protein or protein-based material with distinct characteristics.

Analyze the properties of each option: Elastin is a protein that provides elasticity in tissues, Keratin is a structural protein found in hair and nails, Collagen is a major structural protein in connective tissues, and Silk is a protein-based fiber produced by silkworms, known for its smooth texture and natural shine.

Focus on the key term 'natural luster': Among the options, Silk is widely recognized for its natural luster due to its smooth surface and ability to reflect light effectively.

Conclude the reasoning: Based on the analysis, Silk is the correct answer as it matches the description of a protein-based filament fiber with natural luster.