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BiochemistryEnzymes

Q250. Alpha one anti trypsin works by

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NEET-PG2019Repeats: N/A
BiochemistryEnzymes
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Q11304. Which one of the following shows allosteric inhibition?

A.Malonic acid & succinate
B.2,3 BPG
C.Amino acid alanine & pyruvate kinase
D.Citrate

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NEET-PG2018Repeats: N/A
BiochemistryEnzymes
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Q12012. Which one of the following shows allosteric inhibition?

A.Malonic acid & succinate
B.2,3 BPG
C.Amino acid alanine & pyruvate kinase
D.Citrate

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NEET-PG2018Repeats: N/A
BiochemistryEnzymes
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Q2417. Aldehyde dehydrogenase requires NAD as ?

A.Cofactor
B.Apoenzyme
C.Coenzyme
D.None

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NEET-PG2012Repeats: N/A
BiochemistryEnzymes
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Q2418. Apoenzyme is ?

A.Cofactor
B.Coenzyme
C.Protein moiety
D.None

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NEET-PG2012Repeats: N/A
BiochemistryEnzymes
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Q2420. What are isoenzyme -

A.Physically same forms of different enzymes
B.Physically disinct forms of same enzyme
C.Forms of same enzyme that catalyze different reactions
D.Forms of different enzyme that catalyze same reactions

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NEET-PG2012Repeats: N/A
BiochemistryEnzymes
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Q2423. Km value is defined as:

A.Substrate concentration at Vmax/2
B.Substrate concentration of twice Vmax
C.Substrate concentration of thrice Vmax
D.Substrate concentration of one third Vmax

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NEET-PG2012Repeats: N/A
BiochemistryEnzymes
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Q2424. The predominant isoenzyme of LDH occuring in liver injury is ?

A.LDH-1
B.LDH-2
C.LDH-4
D.LDH-5

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NEET-PG2012Repeats: N/A
BiochemistryEnzymes
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Q2507. Cofactors for glutamate dehydrogenase?

A.NAD+
B.FAD
C.FMN
D.FADH2

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NEET-PG2012Repeats: N/A
BiochemistryEnzymes
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Q2541. Coenzyme form of pyridoxine is ?

A.ADP
B.NAD
C.PLP
D.FAD

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NEET-PG2012Repeats: N/A
BiochemistryEnzymes
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Q2542. The cofactor vitamin B12 is required for the following conversion:

A.Dopamine to Norepinephrine
B.Propionyl CoA to methyl malonyl CoA
C.Methyl malonyl CoA to succinyl CoA
D.Cysteine to homocysteine

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NEET-PG2012Repeats: N/A
BiochemistryEnzymes
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Q2755. Sulphonamide injection causes decrease in folic acid by?

A.Competitive inhibition
B.Non competitive inhibition
C.Uncompetitive inhibition
D.Allosteric inhibition

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NEET-PG2012Repeats: N/A
BiochemistryEnzymes
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Q3880. Enzyme specificity is given by ?

A.Km
B.Vrm„
C.Both
D.None

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NEET-PG2013Repeats: N/A
BiochemistryEnzymes
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Q3899. Phosphofructokinase-1 occupies a key position in regulating glycolysis and is also subjected to feedback control. Which among the following is the allosteric activators of phosphofructokinase-1?

A.Fructose 2, 3 bisphosphate
B.Fructose 2, 6 bisphosphate
C.Glucokinase
D.PEP

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NEET-PG2011Repeats: N/A
BiochemistryEnzymes
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Q3978. The main function of Vitamin C in the body is

A.Coenzyme for energy metabolism
B.Regulation of lipid synthesis
C.Involvement as antioxidant
D.Inhibition of cell growth

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NEET-PG2013Repeats: N/A
BiochemistryEnzymes
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Q5766. Coenzyme used in Kreb's cycle ?

A.NAD
B.NADP
C.NADPH
D.NADH

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NEET-PG2014Repeats: N/A
BiochemistryEnzymes
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Q5813. Cofactor for dopamine hydroxylase ?

A.Fe
B.Mg
C.Mn
D.Cu

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NEET-PG2014Repeats: N/A
BiochemistryEnzymes
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Q5845. Rate limiting step in heme synthesis is catalyzed by ?

A.ALA dehydratase
B.ALA synthase
C.UPG decarboxylase
D.Ferrochelatase

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NEET-PG2014Repeats: N/A
BiochemistryEnzymes
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Q5942. Which isoenzyme of LDH is seen in heart

A.LDH1
B.LDH2
C.LDH3
D.LDH4

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BiochemistryEnzymes
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Q5986. Most common mitochondrial enzyme for metabolism detoxification reaction is ?

A.CYP 3A4
B.CYP 1A2
C.CYP 2A6
D.CYP 2B6

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NEET-PG2014Repeats: N/A
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