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WorksheetsFatty Acid Metabolism Quiz
Total questions: 20
Worksheet time: 10mins
What is the key enzyme in de novo synthesis of fatty acids?
Fatty acid synthase
Acetyl-CoA carboxylase
Lipase
HMG-CoA reductase
Which coenzyme is required by acetyl-CoA carboxylase?
NAD+
Biotin
FAD
Thiamine
The regulatory step in fatty acid synthesis is catalyzed by?
Fatty acid synthase
Acetyl-CoA carboxylase
Lipase
Malonyl-CoA reductase
Citrate activates which enzyme?
Fatty acid synthase
Malonyl-CoA decarboxylase
Acetyl-CoA carboxylase
Lipase
Which molecule is a precursor for malonyl-CoA?
Palmitate
Oxaloacetate
Acetyl-CoA
Acetoacetate
NADPH used in fatty acid synthesis is mainly produced from?
Glycolysis
HMP shunt
Krebs cycle
Gluconeogenesis
Fatty acid synthase complex is a?
Single multifunctional polypeptide
Separate enzymes
Coenzyme
Transport protein
Product of de novo fatty acid synthesis is?
Acetoacetate
Palmitate
Oleate
Stearate
Beta-oxidation of fatty acids occurs in the?
Cytosol
Nucleus
Mitochondria
Ribosome
The initial activation of fatty acids occurs in the?
Mitochondria
ER
Nucleus
Cytosol
Which molecule transports fatty acids into mitochondria?
Acetyl-CoA
Carnitine
Coenzyme A
Malonyl-CoA
Enzyme responsible for transporting fatty acids into mitochondria?
CPT I
CPT II
Thiokinase
Enoyl hydratase
Odd-chain fatty acid oxidation yields which final product?
Pyruvate
Malonyl-CoA
Propionyl-CoA
Lactate
Propionyl-CoA enters the TCA cycle via?
Succinyl-CoA
Citrate
Acetyl-CoA
Fumarate
Which vitamin is required for conversion of propionyl-CoA to succinyl-CoA?
Biotin
Riboflavin
Niacin
Thiamine
How many ATPs are produced from complete oxidation of one palmitic acid?
106
38
129
78
Which of the following inhibits CPT I?
Acetyl-CoA
NADH
Malonyl-CoA
FADH2
What is the role of thiolase in beta-oxidation?
Dehydration
Hydration
Cleavage of ketoacyl-CoA
Oxidation of FADH2
How many cycles of beta-oxidation are needed for palmitate?
8
7
6
9
Which hormone stimulates lipolysis and beta-oxidation?
Insulin
Glucagon
Epinephrine
Thyroxine
