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 best describes tropomyosin?

A fibrous protein that binds along actin filaments and regulates muscle contraction

A globular protein that transports oxygen in the blood

A membrane protein involved in electron transport in mitochondria

An enzyme that catalyzes the hydrolysis of peptide bonds in proteins

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Verified step by step guidance

Understand the role of tropomyosin in muscle contraction. Tropomyosin is a fibrous protein that binds along actin filaments in muscle cells. Its primary function is to regulate the interaction between actin and myosin during muscle contraction.

Eliminate incorrect options by analyzing their descriptions. For example, the option describing a globular protein that transports oxygen in the blood refers to hemoglobin, not tropomyosin.

Consider the option describing a membrane protein involved in electron transport in mitochondria. This refers to proteins like cytochrome c, which are part of the electron transport chain, not tropomyosin.

Evaluate the option describing an enzyme that catalyzes the hydrolysis of peptide bonds in proteins. This describes proteases, such as trypsin or pepsin, which are unrelated to tropomyosin.

Select the correct option: Tropomyosin is a fibrous protein that binds along actin filaments and regulates muscle contraction. This matches the biological function of tropomyosin in muscle cells.