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

8. Protein Function

Antibody

Biochemistry

8. Protein Function

Antibody

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Multiple Choice

Immunoglobulin/antibody classes are distinguished by:

The light chains they possess.

Carbohydrates on their light chains.

Constant regions in their light chains.

The heavy chains they possess.

None are true.

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Verified step by step guidance

Understand the structure of immunoglobulins: Immunoglobulins, or antibodies, are Y-shaped proteins that play a crucial role in the immune response. They consist of two main types of chains: heavy chains and light chains.

Identify the role of heavy chains: The heavy chains are responsible for determining the class of the immunoglobulin. There are five main classes of immunoglobulins (IgG, IgA, IgM, IgE, and IgD), each defined by the type of heavy chain they possess.

Clarify the role of light chains: Light chains are present in all classes of immunoglobulins and come in two types: kappa and lambda. However, they do not determine the class of the immunoglobulin.

Examine the constant regions: The constant regions of the heavy chains are what differentiate the classes of immunoglobulins. These regions are specific to each class and are not found in the light chains.

Conclude with the correct distinguishing factor: The class of an immunoglobulin is determined by the type of heavy chain it possesses, not by the light chains, carbohydrates on light chains, or constant regions in light chains.