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Recent questions tagged biology

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1
5' capping of mRNA transcpts in eukaiyotes involves the following events:P. Addition of GMP on the 5' endQ. Removal of y-phosphate of the triphosphate on rst base at the 5' endR. 5'-5 linkage between GMP and the rst base at 5' endS. Addition of methyl group to N7 position of guanineWhich one of the following is the conect sequence of events? P. Q. R. S P. R. Q. S Q. P. R. S Q. P. S. R
asked Feb 20, 2018 in Molecular Biology and Genetics: gatecse 1.4k points
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2
An analysis of DNA-protein interactions was carried out using all DNA-protein complexesin the protein data bank (PDB). The frequency distribution of four amino acid residues.represented as P. Q. R and S. occuning in non-covalent interactions between the protein andDNA backbone is shown below.60 - '1!G C(aCb) ... P-Ghi. Q-Glu. R-Lys. S-Arg P-Asn. Q-Asp. R-Arg. S-Lys P-His. Q-Glu. R-Gln. S-Lys
asked Feb 20, 2018 in Bioinformatics gatecse 1.4k points
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3
Determine the correctness or otherwise of the following Assenion [a] and the Reason [1]Assertion: The association constant in water for the G-C' base pair is three times lower thanthat for the A-T base pair.Reason: There are three hydrogen bonds in the G-C' base pair and two in the A-T base ... is tme Both [a] and [1] are false Both [a] and [1] are tme and [r] is not the con'ect reason for [a]
asked Feb 20, 2018 in Molecular Biology and Genetics: gatecse 1.4k points
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4
Which one of the following metabolic processes in mammalian cells does N OT occur in themitochondria? Citric acid cycle Oxidative phosphorylation Fatty acid B-oxidation Glycolysis
asked Feb 20, 2018 in Cell Biology gatecse 1.4k points
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5
Cell type A secretes molecule X into the culture medium. Cell type B in the same cultureresponds to the molecule X by expressing protein Y. Which one of the following modes ofsignaling represents the interaction between A and B'? Autocrine J uxtaciine Paracrine Intracrine
asked Feb 20, 2018 in Cell Biology gatecse 1.4k points
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6
Which one of the following statements is true for actin'? Actin lament is structurally polarized and the two ends are not identical De novo actin polymerization is a single-step process The pointed end of the actin laments is the fa st growing end Actin fonns spindle bers during mitosis
asked Feb 20, 2018 in Cell Biology gatecse 1.4k points
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7
The repeat sequence of telomere in humans is 5'-TATAAT-3 5'-TTAGGG-3' 5-GGGC'CC-3' SKAAAAA; -3'
asked Feb 20, 2018 in Molecular Biology and Genetics: gatecse 1.4k points
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8
If a segment of a sense strand of DNA is 5'-ATGGACCAGA-3'. then the resulting RNAsequence after transcription is 5 ' -AGAC' CAGGTA-3 5 '-UCUGGUC' CALI-3 ' 5 '-UAC C UGGUCU- 3 ' 5 -AUGGACCAGA-3
asked Feb 20, 2018 in Molecular Biology and Genetics: gatecse 1.4k points
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9
Which one of the following is INCORRECT about protein structures? A protein fold is stabilized by favorable non-covalent interactions All parts of a fold can be classied as helices. strands or turns Two non-covalent atoms cannot be closer than the sum of their van der Waals radii The peptide bond is nearly planar
asked Feb 20, 2018 in Molecular Biology and Genetics: gatecse 1.4k points
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