Mcq Subject: Biochemistry
Unwinding Enzyme in DNA synthesis:
A. Helicase
B. Primase
C. DNA Polymerase
D. Transcriptase
View DescriptionThe major vitamin deficiency in Wernicke’s encephalopathy is :
A. B1
B. B2
C. B6
D. B12
View DescriptionAll are true about ketone bodies except
A. Acetoacetate is primary ketone body
B. Synthesized in mitochondria
C. Synthesized in liver
D. HMG CoA reductase is the rate-limiting enzyme
View DescriptionTo be defined as a ganglioside,a lipid substance isolated from nervous tissue must contain
A. NANA,hexose,fatty acid,glycerol
B. NANA,hexose,fatty acid,phosphorycholine
C. NANA,sphingosine,ethanolamine
D. NANA,hexose,sphingosine,long chain fatty acid,
View DescriptionExcess of avidin causes deficiency of:
A. Folate
B. Choline
C. Vitamin B12
D. Biotin
View DescriptionInsulin causes lipogenesis by all except:
A. Increasing acetyl-CoA carboxylase activity
B. Increases the transpo of glucose into the cells
C. Inhibits pyruvate dehydrogenase
D. Decreases intracellular cAMP level
View DescriptionA four-year-old child is diagnosed with Duchenne muscular dystrophy, an X-linked recessive disorder. Genetic anylysis shows that the patient&;s gene for the muscle protein dystrophin contains a mutation in its promoter region. What would be the most likely effect of this mutation?
A. Tailing of dystrophin mRNA will be defective
B. Capping of dystropin mRNA will be defective
C. Termination of dystrophin transcription will be deficient.
D. Initiation of dystrophin transcription will be deficient
View DescriptionMenke’s Kinky hair syndrome is due to defect in
A. Ca transporter
B. Cu transporter
C. Zn transporter
D. Se transporter
View DescriptionWhich of the following is the source of energy for a cardiac muscle at normal conditions?
A. Fatty acids
B. Ketone bodies
C. Glucose
D. Any of the above
View DescriptionWhich of the following is not a pyrimidine base?
A. Cytosine
B. Uracil
C. Guanine
D. Thymine
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