Enzymes - Mock Test 40

Question 391

Ceramide is formed by the combination of sphingosine and?

A) Acetyl-CoA B) Acyl-CoA C) Malonyl-CoA D) Propionyl-CoA

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Question 392

Synthesis of sphingosine requires the cofactor?

A) NAD B) NADP C) NADPH+ D) ATP

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Question 393

Synthesis of phosphatidylinositol by transfer of inositol to CDP diacylglycerol is catalysed by the enzyme?

A) CTP phosphatidate cytidyl transferase B) Phosphatidate phosphohydrolase C) CDP-diacylglycerol inositol transferase D) Choline kinase

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Question 394

Phospholipase C attacks the ester bond liberating 1, 2-diacylglycerol and a phosphoryl base at position?

A) 1 B) 2 C) Both 1⃣ and 2⃣ D) 3

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Question 395

Example of enzyme specificity?

A) Stereo specificity B) Reaction specificity C) Substrate specificity D) All of these

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Question 396

Higher rate of lipogenesis is associated with?

A) High proportion of carbohydrate in diet B) Restricted caloric intake C) High fat diet D) Deficiency of insuli

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Question 397

The desaturation and chain elongation system of polyunsaturated fatty acid are enhanced by?

A) Insulin B) Glucagon C) Epinephrine D) Thyroxine

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Question 398

Synthesis of polyunsaturated fatty acids involves the enzyme systems?

A) Acyl transferase and hydratase B) Desaturase and elongase C) Ketoacyl-CoA reductase and hydratase D) Dihydroxyacetone phosphate

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Question 399

The common precursor in the biosynthesis of triacylglycerol and phospholipids is?

A) 1, 2-Diacylglycerol phosphate B) 1-Acylglycerol 3-phosphate C) Glycerol 3-phosphate D) Dihydroxyacetone phosphate

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Question 400

The enzyme glycerol kinase is low activity in?

A) Liver B) Kidney C) Intestine D) Adipose tissue

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