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Biological Sciences Interview Questions
Questions Answers Views Company eMail

How the malaria parasite evades detection by the human immune system?

 1 4319

What is the procedure for Milk ring test?

 4 25972

What are the Pigments produced by Pseudomonas aeruginosa?

 1 6243

Name four culture media used for Vibrio cholerae?

 1 5722

What are the Two rapid tests for diagnosis of cholera?

 1 3242

What is Cholera red reaction ?

 1 14473

Name Escherichia coli groups causing diarrhoea?

 1 3301

What is EPEC?

 2 5884

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 3155

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

 1 3085

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

 1660

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.

 2793

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.

 1673

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 2575

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 33957

Un-Answered Questions { Biological Sciences }

What is the average salary that zoologist that work in the feild of ethology make.

1533

What is the relation between how fast a leaf burns and the minerals or metallic elements contained in the plants?

1508

How florence flask is used?

486

What is enzyme-ligand interaction?

1540

Describe the cell- membrane protein extraction ?

1478




Give an example for electrophilic substitution reaction?

618

How do the amoeboid movements occur?

475

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.

2793

Does sonication extract integral membrane protein?

1681

Explain how do populations of predators and preys vary in predatism?

102

What a test tube brush and how is it used?

453

What do you know about THP-1 cell line ?

1382

What is a graduated cylinder and how is it used?

483

Describe Luciferase assay ?

1429

What is the vector for rocky mountain spotted fever?

472

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