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.

2393

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 7823

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 4142

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 3907

What was the primary antibody that was used?

Pace Pharmaceuticals,

1 5030

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

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1 6129

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 4757

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

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2 5462

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 3927

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 4578

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 4411

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 4426

Is there a biochemical test for maltose?

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2 18423

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

Hetero, Pace Pharmaceuticals,

5 21144

Explain about RESPIRATION ?

1 4013

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Un-Answered Questions { Bio Chemistry }

What is the name of the dna duplication process?

1020

What are the favorable conditions for formation of cat ions?

1179

Which are the most abundant metal and third abundant element in the earth crust?

1058

In double bond, how many sigma and Pi bonds are present in it?

1072

Bacteria are prokaryotic cells, i.e., They do not have membrane-delimited nucleus. Eukaryotes have cells with delimited nucleus. Where in these types of cells can dna are found?

1154

Into which two groups can the nitrogen-containing bases that form dna and rna be classified? What is the criterion used in that classification?

1066

What are the raw materials used for the precipitation of Na2Co3 by Solvay ammonium Process?

1115

Explain which branch of science deals with the transformation of chemical energy into electrical energy and vice versa?

1021

Explain how can you determine the reaction, taking place at constant pressure delta (h)?

1045

What is thermite mixture?

1088

What is the quaternary structure of a protein?

1116

Define ionic product of water. What is its value?

1123

What is the ratio of slaked lime and sand in mortar?

1038

What is the process, by which aluminium is refined?

1198

What is the structure of cscl

1054

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