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

Previous problemNext problem

Struggling with Biochemistry?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which of the following reactions is catalyzed by carnitine acyltransferase?

Conversion of pyruvate to acetyl-CoA

Transfer of an acyl group from acyl-CoA to carnitine, forming acyl-carnitine and CoA

Phosphorylation of glucose to glucose-6-phosphate

Hydrolysis of ATP to ADP and inorganic phosphate

Previous problemNext problem

Verified step by step guidance

Step 1: Understand the role of carnitine acyltransferase. This enzyme is involved in fatty acid metabolism, specifically in the transport of fatty acids into the mitochondria for β-oxidation. It facilitates the transfer of acyl groups from acyl-CoA to carnitine, forming acyl-carnitine and CoA.

Step 2: Analyze the given options. The first option, 'Conversion of pyruvate to acetyl-CoA,' is catalyzed by pyruvate dehydrogenase, not carnitine acyltransferase. The second option, 'Transfer of an acyl group from acyl-CoA to carnitine, forming acyl-carnitine and CoA,' matches the function of carnitine acyltransferase. The third option, 'Phosphorylation of glucose to glucose-6-phosphate,' is catalyzed by hexokinase or glucokinase. The fourth option, 'Hydrolysis of ATP to ADP and inorganic phosphate,' is a general reaction catalyzed by ATPases.

Step 3: Focus on the correct reaction. Carnitine acyltransferase specifically catalyzes the transfer of an acyl group from acyl-CoA to carnitine, forming acyl-carnitine and CoA. This reaction is crucial for the transport of long-chain fatty acids into the mitochondria.

Step 4: Relate the reaction to its biological significance. The formation of acyl-carnitine allows fatty acids to cross the inner mitochondrial membrane, where they can undergo β-oxidation to produce energy in the form of ATP.

Step 5: Summarize the key concept. Carnitine acyltransferase is essential for fatty acid metabolism, and its specific role is the transfer of acyl groups from acyl-CoA to carnitine, enabling the transport of fatty acids into the mitochondria for energy production.