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Sciences Interview Questions
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What are the Two rapid tests for diagnosis of cholera?

 1 3252

What is Cholera red reaction ?

 1 14497

Name Escherichia coli groups causing diarrhoea?

 1 3317

What is EPEC?

 2 5912

The peptide bond in proteins is a) nonpolar, and fixed in a trans conformation. b) nonpolar, but rotates to three preferred dihedral angles. c) planar, and usually found in a trans conformation. d) planar, but rotates to three preferred dihedral angles.

 1 3173

If the enthalpy change for a reaction is zero, DG? is equal to: a) DH? b) lnKeq c) TDS? d) -TDS?

 1 3104

The nucleophile in the first stage of the serine protease mechanism is a) H2O b) the carboxyl of Asp 102 c) the hydroxyl of Ser 195 d) the imidazole of His 57

 1669

The elution volume of an enzyme on a gel filtration column can be predicted from a) its enzyme activity b) its protein absorbance at 280 nm c) subunit composition and monomer molecular mass(es) d) Choices a) and b) are both correct.

 2803

DNA binding by proteins with the helix-turn-helix (HTH) motif does not involve a) altered stacking of the DNA at the center of symmetry. b) hydrogen bonds, salt bridges, and van der Waals contacts. c) interactions with base pairs in the major groove of DNA. d) interactions with the sugar-phosphate backbone of DNA.

 1687

The two exonuclease activities of DNA polymerase I a) are coupled during the formation of "gapped DNA". b) degrade DNA in a 5' --> 3' direction. c) degrade DNA in a 3' --> 5' direction. d) occur at two different active sites.

 1 2597

A principal difference between prokaryotic and eukaryotic DNA replication is a) completely different proteins/enzymes in eukaryotes b) multiple origins in eukaryotes c) no requirement for topoisomerase activity in prokaryotes d) the absence of a nucleus in prokaryotes

 9 34025

When s subunit dissociates from an initiated RNA polymerase, a) it can bind a core enzyme to reform holoenzyme. b) it hydrolyzes ATP until rebound by core enzyme. c) it leaves behind an elongating species complexed with Rho factor. d) it remains bound to the promoter consensus sequence.

 1 3003

The junction between the two helical portions of tRNA is stabilized by many non-standard base-base interactions between residues in the a) anticodon and CCA ends. b) helical stems of the D and Anticodon stems. c) loops of the Anticodon and Acceptor stem. d) loops of the TYC and D arms.

 1 3280

On the ribosome, mRNA binds ____; the peptidyl transferase reaction occurs ____. a) to the large subunit; on the small subunit. b) to the small subunit; on the large subunit. c) between the subunits; on the large subunit. d) between the subunits; on the small subunit.

 2 5044

According to the fluid mosaic model of cell membranes, which type of molecule spans the membrane from its inner to outer surface? a) cholesterol b) phospholipid c) protein d) triacylglycerol

PH.D Interview,

1 4685

Un-Answered Questions { Sciences }

What are the multivariate techniques?

2193

What percent of stars in the sky that appear to be single stars are actually binary stars?

152

What do you like LEAST & MOST about your current position?

3877

What are the responsibilities of dentist?

490

Animals having four feet are called define what?

554




on 21st march and 23rd september 1.the direct rays of the sunfall on the equator. 2.the slanting rays fall on the equator. 3.only the northpole is tilted towards the sun. 4.only the south pole is tilted towards the sun.

3574

Explain about the methods of Explain about the Sterilization of DMEM ?

1861

what are the importance of weeds ?

1562

write short note on stero electronic factor, steric control factor and product control factor

1594

How to isolate intracellular bacteria from human cells ?

1787

HOW TO DETOXIFICATION PROCEDURE FOR CAPECITABINE (ONCOLOGY PRODUCTS)? PLZ EXPLAIN

2143

What is a central pattern generator?

1563

Which are the nucleotides “portions” that bind in the formation of nucleic acids? What is meant by the 5’ and 3’ extremities of nucleic acids?

563

How will you calculate how many moles of glucose present in 320 ml of 5.0 m of glucose solution?

638

In cucumbers normal leaves (N) are dominant to curled leaves (n) and elongated fruit (L) is dominant to spherical fruit and these genes are linked on the same chromosome. If a pure-breeding normal-leaved, elongated fruit cucumber is crossed with a curled-leaved, spherical fruit cucumber, what will be the phenotype of the F1? the phenotypic ratio of the F2?

1775

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