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

How can variations in amino acid sequences within proteins affect an organism?

They only affect the organism if the sequence is found in DNA, not in proteins.

They always result in the organism producing more energy.

They have no effect, since all proteins function the same regardless of sequence.

They can alter protein structure and function, potentially impacting the organism's traits or health.

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Verified step by step guidance

Understand that proteins are composed of amino acids, and their sequence determines the protein's structure and function. Variations in amino acid sequences can arise due to mutations in the DNA that codes for the protein.

Recognize that the sequence of amino acids affects the folding of the protein into its three-dimensional structure. This folding is crucial for the protein's ability to perform its specific function in the organism.

Consider how changes in the protein's structure can impact its function. For example, a mutation might lead to a loss of function, reduced efficiency, or even a gain of a new function, depending on the nature of the change.

Understand that altered protein function can have downstream effects on the organism's traits or health. For instance, a defective enzyme might lead to metabolic disorders, or a mutated structural protein might affect cell integrity.

Conclude that variations in amino acid sequences within proteins can significantly impact an organism by altering protein structure and function, which in turn can affect biological processes and overall health.