Bio Chemistry Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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.

2473

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 7922

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 4216

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 3986

What was the primary antibody that was used?

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1 5101

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

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1 6235

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 4868

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

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2 5573

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 3995

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 4680

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 4523

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 4541

Is there a biochemical test for maltose?

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2 18536

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

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5 21354

Explain about RESPIRATION ?

1 4101

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Un-Answered Questions { Bio Chemistry }

Explain heat of combustion?

1094

Garnet is the ore of which element. Give its chemical formula.

1172

bane the by products when crude oil is refined by distillation

2196

What is the chemical formula for borax?

1055

Explain what is the primary structure of a protein? What is the importance of the primary structure?

1078

For what purpose ammonal is used?

1173

Explain who proposed law of mass action?

1058

What does law of mass action states?

1196

What is galvanic cell?

1274

What is the enzyme that catalyzes the process for production of rna?

1072

What does ammonal contain?

1170

Give the chemical formula of Garnet?

1342

Give examples of tautomers.

1221

Is it expected a change in the primary, in the secondary or in the tertiary structure of a protein to produce more functional consequences?

1139

What is addition reaction?

1179

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