Bio Chemistry Interview Questions
Questions Answers Views Company eMail

How does molecular exclusion chromatography work?

1 2981

What types of things happen to proteins during posttranslational processing (hydroxylation, etc.)?

1 1653

How can one use the pH and the pKa to determine the acid-base form of a compound?

1 1682




How are free energy changes related to enthalpy changes and entropy changes?

865

What types of molecules form bilayers?

1 1459

What are the various types of noncovalent attractive forces?

2 2733

Why are right-handed helices more stable than left-handed helices?

1270

How can peptide bonds be made from amino acids without activating the amino acids first?

1 1468




What kinds of compounds are water soluble? Why?

2 2352

How are reaction rates dependent upon free energy changes?

1053

What role do disulfide bonds play in protein folding, and in protein stability?

1 2922

What are the structural and stability consequences of electron delocalization in amides (peptide bonds)?

1 2002

What types of proteins contain disulfide bonds?

4 3775

What functional group is hydrolyzed in the hydrolysis of ATP to ADP and Pi?

1 1939

What factors cause the hydrolysis of ATP so exergonic?

1 1657


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Un-Answered Questions { Bio Chemistry }

what is familiar hypercholesterolemia?

1271


How are free energy, equilibrium and spontaneity related to each other?

994


Calculate the molar extinction coefficient of a solution containing 5 *10-4 g litre-1 of a biomolecule, molecular weight 275 g mol-1, and absorbance 0.75 in a 1.2 cm cuvette.

1998


ano po ba ang bermuda triangle? ano po ang nandito? meron po bang mga naitala na aksidente sa gawing ito? ano po ang scientific question nito?

3818


How does a random coil differ from an irregularly structured region?

1017






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.

935


What are the structures of the products of this reaction, and how are they identified?

940


why life span of RBC IS GREATER THEN THE WBC?

1430


During a heart attack, blood flowing to the heart muscle is interrupted by blockage of a coronary artery. How would you expect the metabolism in the heart to change?

1772


I have given the protocol for the cyclodextrin glygosyl transferase assay: One ml of appropriately diluted enzyme sample was incubated at 60 °C for 15 min with 5 ml of 1% (w/v) gelatinized soluble starch in 50 mM, 7.0-pH Tris–HCl buffer. Reaction was terminated by boiling the reaction mixture for 3 min and reaction volume was made to 10 ml with distilled water. Two ml of above reaction mixture was withdrawn and mixed with 3 ml of Tris–HCl buffer, 5 ml of 125 mM Na2CO3, and 0.5 ml of phenolphthalein (25 mg phenolphthalein/100 ml absolute alcohol). Absorbance was measured at 550 nm. The percent decrease of sample was calculated with respect to control containing 5 ml of buffer, 5 ml of sodium carbonate and 0.5 ml of phenolphthalein. where Acontrol = absorbance of control and Atest = absorbance of sample. The amount of β-cyclodextrin (β-CD) produced was estimated from the standard graph of 0–500 μg/ml β-CD concentration against % decrease in absorbance. One unit of CGTase was defined as the amount of enzyme required to produce 1 μm of β-CD/min. Please can you suggest me the formula for the defination given in the last line

954


What are hydrophobicity scales, and how are they used?

791


what is meant by codan optimisation m rna enrichment?

1360


How much empty space is found in globular proteins?

916


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

983


what is your passion?

875