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2003 > Biochemistry
- The amino acid that is both polar(?) and ionic is?
A. Arginine
B. Aspartate
C. Glutamate
D. Leucine
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- The amino acid that acts as a precursor in the
production of urea is?
A. Arginine
B. Aspartic acid
C. Ornithine
D. Glutamate
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- The amino acid which on decarboxylation gives rise
to a product with potent vasodilator properties is?
A. Histidine
B. Arginine
C. Glutamate
D. Aspartate
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- The synthesis of 1 peptide bond involves hydrolysis
of ?
A. 1 ATP
B. 2 ATPs
C. 3 ATPs
D. 4 ATPs
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- The one having a quaternary structure is?
A. Myoglobin
B. Hemoglobin
C. α-1-antitrypsin
D. Glycine
Ans: Hemoglobin
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- Selenium is a cofactor in following enzyme?
A. dehydrogenase
B. cytochrome oxidase
C. cytochrome reductase
D. xanthine oxidase
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- In congenital erythropoietic porphyria, the type of
uroporphyrinogens and coproporphyrinogens seen are?
A. Type I
B. Type II
C. Type III
D. Type IV
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- Thiamine acts as a cofactor in?
A. Pyruvate to oxalate
B. Malonate to oxaloacetate
C. Succinate to fumarate
D. Pyruvate to acetyl CoA
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- Enzyme not involved in DNA replication is?
A. Telomerase
B. Reverse transcriptase
C. Restriction endonuclease
D. DNA ligase
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