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

Why are cows sometimes injected with specific proteins in agricultural or veterinary practices?

To increase the fat content of their milk

To directly increase muscle mass without additional feed

To stimulate the production of antibodies for vaccine development

To enhance their ability to digest cellulose

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Verified step by step guidance

Understand the context: In agricultural or veterinary practices, cows may be injected with specific proteins for purposes related to their health, productivity, or scientific research. This question focuses on the reason behind such injections.

Analyze the options: The first option suggests increasing the fat content of milk, which is not typically achieved by injecting proteins. The second option implies direct muscle mass increase, which is not a common practice without additional feed. The third option mentions stimulating antibody production for vaccine development, which aligns with immunological principles. The fourth option refers to enhancing cellulose digestion, which is more related to microbial activity in the rumen rather than protein injections.

Focus on the correct answer: Proteins can be used as antigens to stimulate the immune system of cows. When injected, these proteins trigger the production of specific antibodies, which are crucial for vaccine development. This process is a common practice in veterinary immunology.

Clarify the mechanism: When cows are injected with specific proteins (antigens), their immune system recognizes these proteins as foreign and mounts an immune response. This involves the activation of B cells, which produce antibodies specific to the injected protein. These antibodies can then be harvested for vaccine development or other research purposes.

Conclude the reasoning: The correct answer is 'To stimulate the production of antibodies for vaccine development,' as this practice leverages the cow's immune system to produce antibodies that can be used in scientific or medical applications.