Mcq Subject: Biochemistry
What is the function of DNA ligase ?
A. Unwinding (denaturation) of dsDNA to provide an ssDNA template
B. Seals the single strand nick between the nascent chain and Okazaki fragments on lagging strand
C. Initiation of DNA synthesis and elongation
D. Initiates synthesis of RNA primers
View DescriptionFluroacetate inhibits –
A. Citrate synthetase
B. Aconitase
C. Succinate dehydrogenase
D. Alphaketoglutarate dehydrogenase
View DescriptionFarber&;s disease is due to the deficiency of
A. Ceraminidase
B. Sphingomyelinase
C. Glucocerebrosisase
D. Neuraminidase
View DescriptionTrue-regarding DNA-replication:
A. Semi conservative
B. Sister Chromatids are formed.
C. Follow base pair rule
D. All of the above
View DescriptionConcentration of which is inversely related to the risk of coronary hea disease
A. VLDL
B. LDL
C. HDL
D. None
View DescriptionWhich of the following is a suicidal enzyme
A. Cyclooxygenase
B. Lipooxygenase
C. 5-nucleotidase
D. Thrombaxane synthase
View DescriptionPatients with diabetes frequently report changing visual acuities when their glucose levels are chronically high. Which of the following could explain the fluctuating acuity with high blood glucose levels?
A. Increased sorbitol in the lens
B. Decreased fructose in the lens
C. Increased oxidative phosphorylation in the lens
D. Macular degeneration
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