Biochemistry Regulatory Enzymes Online Exam Quiz
Biochemistry Regulatory Enzymes GK Quiz. Question and Answers related to Biochemistry Regulatory Enzymes. MCQ (Multiple Choice Questions with answers about Biochemistry Regulatory Enzymes
How many types of enzymatic regulation mechanism occurs in the cells?
Options
A : 2
B : 3
C : 4
D : 5
Which of the following is false about allosteric feedback inhibition?
Options
A : Bacterial enzyme system is the first known example
B : Conversion of L-leucine to L-isoleucine
C : Threonine dehydratase is inhibited by isoleucine
D : If the isoleucine concentration decreases, the rate of threonine dehydration increases
Which of the following enzyme catalyzes a reaction that introduces reduced nitrogen ito cellular metabolism?
Options
A : Bacterial glutamine synthase
B : Bacterial dinitrogenase reductase
C : Bacterial dinitrogenase oxidase
D : Phosphatase
The allosteric inhibitor of an enzyme ___________
Options
A : Causes the enzyme to work faster
B : Binds to the active site
C : Participates in feedback regulation
D : Denatures the enzyme
Which of the following enzyme is responsible for the regulation of biological nitrogen fixation?
Options
A : Dinitrogenase reductase
B : Dinitrogenase oxidase
C : Phosphatase
D : Kinase
Which of the following enzymes catalyze the ADP-ribosylation of key cellular enzymes or proteins?
Options
A : Diphteria toxin and cholera toxin
B : Dinitrogenase reductase
C : Protein phosphatases
D : Kinase
Removal of phosphoryl groups is catalyzed by ___________
Options
A : Diphteria toxin and cholera toxin
B : Dinitrogenase reductase
C : Protein phosphatases
D : Protein kinases
The attachment of phosphoryl groups to specific amino acid residues is catalyzed by ___________
Options
A : Diphteria toxin and cholera toxin
B : Dinitrogenase reductase
C : Protein phosphatases
D : Protein kinases
Which is the enzyme that acts as a regulatory enzyme in a four-step metabolic pathway?
Options
A : First enzyme
B : Fourth enzyme
C : Second enzyme
D : Third enzyme
Which of the following takes place due to phosphorylation of isocitrate dehydrogenase?
Options
A : Inhibits the binding of citrate at active site
B : Degrades the enzyme
C : Enhances the substrate-binding affinity
D : No reaction
Chemical Engineering Basics - Part 1 more Online Exam Quiz
Biochemistry Regulation Cell Cycle Protein Kinases
Biochemistry Regulation Gene Expression Prokaryotes
Biochemistry Regulation Metabolic Pathways
Biochemistry Regulation Oxidative Phosphorylation
Biochemistry Regulation Transcription Steroid Hormones
Biochemistry Rna Dependent Synthesis Rna Dna
Biochemistry Role Mitochondria Apoptosis Oxidative Stress