Biological Sciences Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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Biological Sciences Interview Questions

Questions Answers Views Company eMail

Which compound is involved in reducing levels of homocysteine in the blood?

2597

When a forensics laboratory tests evidence collected at the scene of a crime using the "DNA Fingerprinting" technique, what are the technicians comparing?

Vimta Labs,

1 3891

Promoters of housekeeping genes contain variable numbers of GC boxes, but neither TATA nor CCAAT boxes.Inwhat way these properties of housekeeping promoters are helpful?

2119

Suppose you are heterozygous for a mutant beta-thalassemia allele. If the frequency of beta-thalassemia is 1/1600 persons, what is the probabilty that your prospective spouse is heterozygous for a mutant beta-thalassemia allele?

2078

The village of Oblong has 400 normally-shaped residents. Transferrin is an iron carrier found in blood, and electrophoretic variation of this protein is determined by an autosomal codominant system. The citizens of Oblong were typed for their transferrin complements. The distribution of transferrin phenotypes was: 100 CC, 100 CD, and 200 DD. What is the frequency of the C allele?

1 2958

Cystic fibrosis (CF) occurs with a frequency of about 1/2500 Caucasian newborns and is inherited as an autosomal recessive. A woman had an older sister die from complications of this disease. CF is not present among relatives of her husband. Both the woman and her husband have normal phenotypes. What is the chance this couple will have a CF child?

2252

A blastomere was removed from an 8-cell human embryo, and its beta-globin gene was amplified by PCR. The beta-globin DNA was treated with an enzyme that cuts on either side of and within the normal allele (producing a small fragment), but not within the sickle cell allele (producing a large fragment). Electrophoresis of the treated DNA from the blastomere demonstrated the presence of both a large and small fragment derived from the beta-globin genes. How should you interpret this test?

2107

What is the difference between and aldose and a ketose? Give an example of each?

2 16498

What are carbohydrates used for in living systems?

3 10617

what is a Reducing sugar?

3 6277

what are Epimers?

3 8109

How to name a glycosidic bond?

1 6171

What is the importance of sorbitol?

1 4491

Where is lactose mainly produced in mammals?

1 4033

How is glycogen synthesized?

1 3932

Un-Answered Questions { Biological Sciences }

What is a sepal?

1999

What are the endocrine functions of the placenta?

What are abiotic factors?

385

How cellulose is formed in plant?

2017

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

1052

what does the storage tissue in a seed do?

1911

How is the mesoderm (third germ layer) of triploblastic animals formed?

What are the basic principles of regulation ?

3687

Which metal is more metallic in nature among 1A group elements?

1089

What is the name of the membrane that delimits the nucleus? To which component of the cell structure that membrane is contiguous?

925

How often can a female rat reproduce?

1040

Can the powdery mildew Oidium lycopersicum be stored in the freezer in order to inoculate tomato plants?

2021

Explain some examples of parasitism?

379

Define harmonious ecological interaction?

351

What is ecological succession?

323

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