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

Which enzyme is primarily responsible for breaking down starch into simpler sugars during digestion?

Lactase

Protease

Lipase

Amylase

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Verified step by step guidance

Understand the role of starch in digestion: Starch is a polysaccharide composed of glucose units. During digestion, it needs to be broken down into simpler sugars (e.g., maltose and glucose) for absorption.

Identify the enzyme responsible for breaking down starch: Enzymes are biological catalysts that target specific substrates. The enzyme that targets starch is amylase.

Clarify the function of amylase: Amylase hydrolyzes the glycosidic bonds in starch, converting it into maltose and other smaller sugar molecules. This process begins in the mouth with salivary amylase and continues in the small intestine with pancreatic amylase.

Differentiate amylase from other enzymes: Lactase breaks down lactose (milk sugar), protease breaks down proteins, and lipase breaks down lipids (fats). None of these enzymes target starch, confirming amylase as the correct enzyme.

Conclude that amylase is the enzyme primarily responsible for breaking down starch into simpler sugars during digestion, as it specifically catalyzes the hydrolysis of starch molecules.