Bio Chemistry Interview Questions
Questions Answers Views Company eMail

what is the chemical composition of auxin b?

1 2393

explain the phenomenon of bolting?

2 2838

what is the chemical formula of kinetin?

1 2468




what are the effects shown by morphactins on plants?

1 4111

what are the symptoms of the disease phrynoderma?

1 3781

name the two analogues of vitamin "k" ?

1 2278

how vitamin c is synthesised?

1 2434

what are the principles involved in thin layer chromatography?

Aurobindo, Reddy Labs,

12 30572




what is the difference in the aminoacid sequence in normal haemoglobin and sickle cell anaemic person?

Aurobindo,

3 3316

what is ninhydrin reaction?how it is useful?

Jubilant, Aurobindo,

3 9587

what is PHOSGENE?what is the importance of it?

1 2442

what is ramachandran plot?what r its applications?

Biocon, GVK, SAD,

18 47416

what are the structural differences between alpha keratin and collagen?

Biocon,

2 20001

how haemoglobin acts as an allosteric protein?

Biocon, University,

5 9020

what is niemann-pick disease and what are the disease symptoms?

Biocon,

2 3454


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Un-Answered Questions { Bio Chemistry }

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 Two ml of above reaction mixture was withdrawn and mixed with 3 ml of Tris–HCl buffer, 5 ml of 125 mM Na2CO3, and 0.5 ml of phenolphthalein (25 mg phenolphthalein/100 ml absolute alcohol).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

914


what is meant by codan optimisation m rna enrichment?

1327


Why is the t-butyloxycarbonyl protecting group such a good choice for amino acid synthesis?

963


Which organ and subcellular site are most important for fatty acid biosynthesis?

804


I understand that urine can act as a reagent to break disulfide bonds? I am particularly interested in bonds between cysteines. and or any other amino acids.

240






can i used antimony potassium tartrate against potassium tartrate in Fehling B solution ?

482


All technical,written test questions

438


How is the actual free energy change for a process related to the standard free energy change?

1480


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

1177


what is QC and why is impotent in pathology lab

1528


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.

1963


Describe the structure of a peptide giving the sequence.

714


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

982


What type of column is generally used to separate amino acids from each other?

960


What are species grow in waitland?

1218