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

6. Enzymes and Enzyme Kinetics

Enzymes

Biochemistry

6. Enzymes and Enzyme Kinetics

Enzymes

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Multiple Choice

Proteins that speed up chemical reactions in cells are called:

Enzymes

Antibodies

Hormones

Receptors

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Verified step by step guidance

Understand the role of proteins in cellular processes: Proteins are macromolecules that perform a variety of functions in cells, including catalyzing reactions, signaling, and structural support.

Focus on the term 'speed up chemical reactions': This phrase indicates the protein's function as a catalyst, which is a substance that increases the rate of a chemical reaction without being consumed in the process.

Recall the definition of enzymes: Enzymes are specialized proteins that act as biological catalysts, lowering the activation energy required for reactions and thereby speeding them up.

Differentiate enzymes from other protein types: Antibodies are involved in immune defense, hormones are signaling molecules, and receptors are proteins that bind specific molecules to trigger cellular responses. None of these directly catalyze reactions.

Conclude that the correct answer is 'Enzymes,' as they are the proteins responsible for accelerating chemical reactions in cells.