Bio Chemistry Interview Questions
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When it functions as a "second messenger", cAMP a) acts outside the cell to influence cellular processes. b) acts "second in importance" to AMP. c) activates all cytosolic protein kinases. d) activates the cAMP-dependent protein kinase.

905

The reduction-oxidation (Redox) potentials of NADH and FADH2 show that the following reaction is spontaneous: a) FADH2 + NAD+ --> FAD + NADH b) FADH2 + NADP+ --> FAD + NADPH c) NADH + FAD --> NAD+ + FADH2 d) Reactions a) and b) are both spontaneous

1 5672

The ATP synthase of bacteria is an Fl-like particle attached to the a) ends of proto-mitochondria. b) inner surface of the cell (or plasma) membrane. c) outer surface of the cell (or plasma) membrane. d) surface of protonic vesicles.

1 2168




The yield of ATP/glucose unit in glycolysis with glycogen as the glucose source is a) 2.0 b) 2.5 c) 3.0 d) 4.0

1 1951

What was the primary antibody that was used?

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1 3029

Describe how you used that antibody to visualize β-gal protein?

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1 4235

Review your data from the entire module. Say we ask you to redo the purification.Is there any step that you could eliminate? Which one? Why can you eliminate it?

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2 2282

Why do proteins that recognize specific DNA sequences usually bind in the major groove of DNA?

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2 2518




An unusual structure is formed at the 5? end of each cellular mRNA. What is it? After this has formed, does the mRNA have a 5? terminus? Explain.

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1 2012

Splicing of pre-mRNA involves an unusual phosphodiester bond. Why is it unusual? What parts of the intron/exon form this bond?

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1 2396

Many genes are regulated in both a negative and a positive manner. The genes mediating lactose metabolism in bacteria are a classical example. What are the two small molecule ligands that control expression of these genes? What does each one do?

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1 2090

Some proteins profoundly alter the structure of DNA when they bind, bending it far out of its standard B configuration. Where do you think the energy comes from to distort the DNA?

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1 2481

Is there a biochemical test for maltose?

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2 15258

When starch reacts with iodine, why does it create the characteristic blue-black colour?

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5 15367

Explain about RESPIRATION ?

1 2109


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Un-Answered Questions { Bio Chemistry }

Glycolysis is A) C6H12O6 --> 2C2H5OH + 2CO2 B) C6H12O6 --> 2CH3H4O3 + 4H c) C3H4O3 + NAD --> C2H5OH + CO2 NAD D) C6H12O6 + 6H20 --> 6CO2 + 6H2O

1447


which fat soluble vitamin has co-enzymic function?

790


When it functions as a "second messenger", cAMP a) acts outside the cell to influence cellular processes. b) acts "second in importance" to AMP. c) activates all cytosolic protein kinases. d) activates the cAMP-dependent protein kinase.

905


What is the structural formula of molybdenum blue?

2312


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

998






How does hplc differ from normal column chromatography, and what are its advantages?

952


i have done M.SC. in biochemistry from india. as i have experience of pharmaceuticals in quality assurance department of 4 year.now i come to know that my degree is valid in uk.i got my comparision letter of degree from uknaric. but i m confuse that what is the next step to do for getiing job in lab? am i eligible to get directly job or as trainee than job ? or to register in ibms or what? pls tell me

2148


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

975


What factors are involved in determining the electrophoretic mobility of a molecule?

921


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.

262


bane the by products when crude oil is refined by distillation

988


"Tell me about a job that you found particularly satisfying. What did you like about it?

1894


what is your passion?

856


What is the difference between Phospholipids and phosphosphingosides?

1957


How do hydrophobic and hydrophilic residues arrange themselves in globular proteins?

862