Metabolism of Lipid - Al-Hadi University Collage

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Which process involves breaking down large molecules into small particles to produce ATP?

Anabolism

Catabolism (correct)

Gluconeogenesis

Lipolysis

What hormone activates hormonesensitive triacylglycerol lipase (HSL) for hydrolyzing triglycerides?

Cortisol

Insulin

Glucagon

Epinephrine (correct)

In the metabolism of lipids, which pathway is quantitatively the most important for fatty acid oxidation?

α-Oxidation

ω-Oxidation

β-Oxidation (correct)

γ-Oxidation

Which molecule is converted to dihydroxyacetone phosphate (DHAP) for gluconeogenesis?

Glycerol Signup and view all the answers

What is the main function of lipolysis in the body's energy metabolism?

Energy production Signup and view all the answers

Which hormone does not directly influence human adipose tissue but activates hormonesensitive triacylglycerol lipase (HSL)?

Insulin Signup and view all the answers

What is the initial event in the utilization of fat as an energy source?

Hydrolysis of triacylglycerol Signup and view all the answers

Which enzyme is responsible for converting fatty acids to CoA thioesters during activation?

Acyl-CoA synthetase Signup and view all the answers

What is the role of hormone-sensitive triacylglycerol in fat metabolism?

Activate lipase enzyme Signup and view all the answers

Where does beta-oxidation, the degradation pathway of fatty acids, take place?

Mitochondria Signup and view all the answers

What happens to free fatty acids once they bind to albumin in the plasma?

Transported to tissues Signup and view all the answers

Why is fatty acid oxidation not considered the simple reverse of fatty acid biosynthesis?

Different enzymes are involved Signup and view all the answers

What is the role of carnitine in fatty acid metabolism?

Transports fatty acids across the mitochondrial membrane Signup and view all the answers

Which enzyme is responsible for transferring the fatty acyl group to carnitine?

Carnitine acyl transferase-I (CAT-I) Signup and view all the answers

What is the major pathway for the catabolism of saturated fatty acids?

β-oxidation Signup and view all the answers

Which compound results from the process of β-oxidation of fatty acids?

Acetyl CoA Signup and view all the answers

What is the fate of each acetyl CoA molecule produced in fatty acid metabolism?

Oxidized by Krebs cycle to produce CO2, H2O, and ATP Signup and view all the answers

Which enzyme is responsible for the conversion of acyl-CoA to B-ketoacyl-CoA?