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 of the following enzymes does NOT complete the digestion of disaccharides into absorbable monosaccharide units in the human small intestine?

Maltase

Amylase

Sucrase

Lactase

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Verified step by step guidance

Understand the role of each enzyme listed in the problem. Maltase, sucrase, and lactase are enzymes that specifically act on disaccharides to break them down into monosaccharides. Amylase, on the other hand, is involved in the digestion of polysaccharides, not disaccharides.

Recall that disaccharides are composed of two monosaccharide units. For example, maltose is broken down by maltase into two glucose molecules, sucrose is broken down by sucrase into glucose and fructose, and lactose is broken down by lactase into glucose and galactose.

Recognize that amylase is an enzyme that hydrolyzes starch (a polysaccharide) into smaller polysaccharides and maltose, but it does not act on disaccharides directly to produce monosaccharides.

Identify that the question is asking for the enzyme that does NOT complete the digestion of disaccharides into absorbable monosaccharides. Based on the roles of the enzymes, amylase does not perform this function.

Conclude that amylase is the correct answer because it is involved in the initial breakdown of polysaccharides, not the final digestion of disaccharides into monosaccharides.