Phospholipase C is activated by (A) Gs proteins (B) Gi proteins (C) Gq proteins (D) G12 proteins

Phospholipase C is activated by (A) Gs proteins (B) Gi proteins (C) Gq proteins (D) G12 proteins
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a1 – receptors are coupled with _______ G protein. (a) Gs (b) Gi (c) Gq (d) Go

Description : a1 – receptors are coupled with _______ G protein. (a) Gs (b) Gi (c) Gq (d) Go

Last Answer : Ans: C

Activated phospholipase C acts on (A) Phosphatidyl inositol-4, 5-biphosphate (B) Inositol-1, 4, 5-triphosphate (C) Protein kinase C (D) Pl-3 kinase

Description : Activated phospholipase C acts on (A) Phosphatidyl inositol-4, 5-biphosphate (B) Inositol-1, 4, 5-triphosphate (C) Protein kinase C (D) Pl-3 kinase

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Dolichol phosphate is A- a complex lipid involved in docking vesicles with the plasma membrane B- the anchor on which sugars assemble before transfer to proteins C- a chaperone used in protein folding D- a product of phospholipase C activation

Description : Dolichol phosphate is A- a complex lipid involved in docking vesicles with the plasma membrane B- the anchor on which sugars assemble before transfer to proteins C- a chaperone used in protein folding D- a product of phospholipase C activation

Last Answer : the anchor on which sugars assemble before transfer to proteins

Isoenzymes can be characterized by (A) Proteins lacking enzymatic activity that are necessary for the activation of enzymes (B) Proteolytic enzymes activated by hydrolysis (C) Enzymes with identical primary structure (D) Similar enzymes that catalyse different reaction

Description : Isoenzymes can be characterized by (A) Proteins lacking enzymatic activity that are necessary for the activation of enzymes (B) Proteolytic enzymes activated by hydrolysis (C) Enzymes with identical primary structure (D) Similar enzymes that catalyse different reaction

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Binding of insulin to its receptor activates (A) Adenylate cyclase (B) Guanylate cyclase (C) Phospholipase C (D) Tyrosine kinase

Description : Binding of insulin to its receptor activates (A) Adenylate cyclase (B) Guanylate cyclase (C) Phospholipase C (D) Tyrosine kinase

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Some hormones produce their intracellular effects by activating (A) Phospholipae A1 (B) Phospholipase B (C) Phospholipase C (D) All of these

Description : Some hormones produce their intracellular effects by activating (A) Phospholipae A1 (B) Phospholipase B (C) Phospholipase C (D) All of these

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Zellweger’s syndrome is due to inherited absence of (A) Peroxisomes (B) Phospholipase A1 (C) Acyl-Co-A dehydrogenase (D) Thiolase

Description : Zellweger’s syndrome is due to inherited absence of (A) Peroxisomes (B) Phospholipase A1 (C) Acyl-Co-A dehydrogenase (D) Thiolase

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Phospholipase C attacks the ester bond liberating 1, 2-diacylglycerol and a phosphoryl base at position (A) 1 (B) 2 (C) Both (A) and (B) (D) 3

Description : Phospholipase C attacks the ester bond liberating 1, 2-diacylglycerol and a phosphoryl base at position (A) 1 (B) 2 (C) Both (A) and (B) (D) 3

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Non steroidal anti inflammatory drugs, such as aspirin act by inhibiting the activity of the enzyme: (A) Lipoxygenase (B) Cyclooxygenase (C) Phospholipase A2 (D) Lipoprotein lipase

Description : Non steroidal anti inflammatory drugs, such as aspirin act by inhibiting the activity of the enzyme: (A) Lipoxygenase (B) Cyclooxygenase (C) Phospholipase A2 (D) Lipoprotein lipase

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Phospholipase A2 is an enzyme which removes a fatty acid residue from lecithin to form (A) Lecithin fragments (B) Phosphotidic acid (C) Glyceryl phosphate (D) Lysolecithin

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Lysolecithin is formed from lecithin by the action of (A) Phospholipase A1 (B) Phospholipase A2 (C) Phospholipase C (D) Phospholipase D

Description : Lysolecithin is formed from lecithin by the action of (A) Phospholipase A1 (B) Phospholipase A2 (C) Phospholipase C (D) Phospholipase D

Last Answer : Answer : B

Anti-inflammatory corticosteroids inhibit (A) Phospholipase A1 (B) Phospholipase A2 (C) Cyclo-oxygenase (D) Lipo-oxygenase

Description : Anti-inflammatory corticosteroids inhibit (A) Phospholipase A1 (B) Phospholipase A2 (C) Cyclo-oxygenase (D) Lipo-oxygenase

Last Answer : Answer : B

Phenylbutazone and indomethacin inhibit (A) Phospholipase A1 (B) Phospholipase A2 (C) Cyclo-oxygenase (D) Lipo-oxygenase

Description : Phenylbutazone and indomethacin inhibit (A) Phospholipase A1 (B) Phospholipase A2 (C) Cyclo-oxygenase (D) Lipo-oxygenase

Last Answer : Answer : C

Apolipoprotein C-II is an activator of (A) Lecithin cholesterola acyl transferase (B) Phospholipase C (C) Extrahepatic lipoprotein lipase (D) Hepatic lipoprotein lipase

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Last Answer : Answer : C

A ’suicide enzyme’ is (A) Cycloxygenase (B) Lipooxygenase (C) Phospholipase A1 (D) Phospholipase A2

Description : A ’suicide enzyme’ is (A) Cycloxygenase (B) Lipooxygenase (C) Phospholipase A1 (D) Phospholipase A2

Last Answer : Answer : A

Aspirin inhibits the activity of the enzyme: (A) Lipoxygenase (B) Cyclooxygenase (C) Phospholipae A1 (D) Phospholipase A2

Description : Aspirin inhibits the activity of the enzyme: (A) Lipoxygenase (B) Cyclooxygenase (C) Phospholipae A1 (D) Phospholipase A2

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Hazen’s formula VS = 418 (GS – Gw)d [(3T + 70)/100] is used for the settlement velocity of the particles of diameter A. Less than 0.01 mm B. Less than 0.05 mm C. Less than 0.1 mm D. Greater than 0.1 mm

Description : Hazen’s formula VS = 418 (GS – Gw)d [(3T + 70)/100] is used for the settlement velocity of the particles of diameter A. Less than 0.01 mm B. Less than 0.05 mm C. Less than 0.1 mm D. Greater than 0.1 mm

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The settling velocity of a spherical particle of diameter less than 0.1 mm as per Stock’s law, is A. Vs = 418 (Gs – Gw) d [(3T + 70)/100] B. Vs = 418 (Gs – Gw)d² [(3T + 70)/100] C. Vs = 218 (Gs – Gw)d² [(3T + 70)/100] D. Vs = 218 (Gs – Gw)d [(3T + 70)/100]

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Corticosteroids exert anti-inflammatory action by inhibiting the following enzyme (a) Cycloxygenase (b) Lipozygenase (c) Phospholipase - A (d) Phosphodiesterase

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Inflammation is a complex tissue reaction that includes the release of cytokines, leukotrienes, prostaglandins, and peptides. Prostaglandins involved in inflammatory processes are produced from arachidonic acid by (a) Cyclooxygenase 1 (b) Cyclooxygenase 2 (c) Glutathione – S – transferase (d) Lipoxygenase (e) Phospholipase A2

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Last Answer : Ans: B

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