Biology Exam Question Papers

Biotechnology Ph.D Entrance Test Question Paper 2015 (Kerala University)


Biotechnology PhD Entrance Paper

KERALA UNIVERSITY Ph.D. ENTRANCE EXAMINATION – 2015
FACULTY OF APPLIED SCIENCES

BIOTECHNOLOGY

Time: 140 Minutes                                                                            Maximum Marks: 160

Note: Answer any twelve questions from Section B and one question from Section C in the subject concerned. In Section B, each question carries 10 marks. Section C carries 40 marks. In Section B an answer should not exceed 100 words. In Section C, an answer should not exceed 500 words.

SECTION – B

(1). Comment on A, B, Z forms of DNA. Discuss their structural features.

(2). What are retrotransposons? Comment on their applications.

(3). Discuss the various types of repetitive sequences in DNA. Comment on their utilities.

(4). Discuss the various types of mechanisms involved in post translational modifications.

(5). Discuss the various stages in a typical bioprocess and comment on the significance of each stage.

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Biology Exam Question Papers

Zoology Ph.D Entrance Examination 2015 Question Paper (Kerala University)


Zoology PhD Entrance Papers

KERALA UNIVERSITY Ph.D. ENTRANCE EXAMINATION – 2015
FACULTY OF SCIENCES

ZOOLOGY

Time: 140 Minutes                                                  Maximum Marks: 160

Note: Answer any twelve questions from Section B and one question from Section C in the subject concerned. In Section B, each question carries 10 marks. Section C carries 40 marks. In Section B an answer should not exceed 100 words. In Section C, an answer should not exceed 500 words.

SECTION – B

(1). What are biosensors? What is their role in health care management?

(2). Write brief note on food toxicological agents.

(3). Write an account on how backwater tourism activities affect the aquatic ecosystem.

(4). Explain the pros and cons of genetic transplant and GM products.

(5). Describe the steps in cellular protein synthesis.

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Biology Exam Question Papers

Biotechnology Ph.D Entrance Test Question Paper 2013 (Kerala University)


Biotechnology PhD Entrance Paper

KERALA UNIVERSITY Ph.D. ENTRANCE EXAMINATION – 2013
FACULTY OF APPLIED SCIENCES

BIOTECHNOLOGY

Time: 140 Minutes                                                                            Maximum Marks: 160

Note: Answer any twelve questions from Section B and one question from Section C in the subject concerned. In Section B, each question carries 10 marks. Section C carries 40 marks. In Section B an answer should not exceed 100 words. In Section C, an answer should not exceed 500 words.

SECTION – B

(1). What is Ramachandran plot? Describe the structural details and principles based on which Ramachandran plots are constructed. Add a note on its applications.

(2). Phage derived vectors and artificial chromosomes are preferred rather than plasmids for constructing genomic libraries of eukaryotes. Explain.

(3). Explain the molecular mechanisms by which Ti plasmid of Agrobacterium tumefacience is transferred to the plants causing tumour.

(4).  Compare the following :

a.  Eukaryotic and prokaryotic promoters

b.  Eukaryotic and prokaryotic ribosomes

c.  Eukaryotic and prokaryotic RNA polymerases

d.  Eukaryotic and prokaryotic DNA polymerases

(5).  Explain a theoretical background of pulse field electrophoresis.

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Biology Exam Question Papers

Zoology Ph.D Entrance Examination 2009 Question Paper (Kerala University)


Zoology PhD Entrance Papers

KERALA UNIVERSITY Ph.D. ENTRANCE EXAMINATION – 2013
FACULTY OF SCIENCES

ZOOLOGY

Time: 140 Minutes                                                  Maximum Marks: 160

Note: Answer any twelve questions from Section B and one question from Section C in the subject concerned. In Section B, each question carries 10 marks. Section C carries 40 marks. In Section B an answer should not exceed 100 words. In Section C, an answer should not exceed 500 words.

SECTION – B

(1). Give an account on different types of DNA.

(2). What is gluconeogenesis?

(3). What are ecological pyramids?

(4). What is the importance of crossing over?

(5). What are multiple alleles?

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Biology Exam Question Papers

Biochemistry Ph.D Entrance Exam Question Paper 2013 (Kerala University)


Biochemistry PhD Entrance Paper

KERALA UNIVERSITY Ph.D. ENTRANCE EXAMINATION – 2013
FACULTY OF SCIENCES

BIOCHEMISTRY

Time: 140 Minutes                                                  Maximum Marks: 160

Note: Answer any twelve questions from Section B and one question from Section C in the subject concerned. In Section B, each question carries 10 marks. Section C carries 40 marks. In Section B an answer should not exceed 100 words. In Section C, an answer should not exceed 500 words.

SECTION – B

(1). Explain the term Chromatography. How are proteins separated by :

a. Affinity Chromatography

b. Ion-exchange chromatography.

(2). Given a mixture of proteins which contains a recombinant insulin among other proteins which of the above two chromatographic technique will you employ for purification of the insulin molecule. Why?

(3). Explain Beer Lamberts’s law. Describe an experiment to verify this law. Given that the Molar extinction coefficient of a compound in water is 25,000 at 550 nm and a solution of this compound in water gave an absorbance of 0.552 at 550 nm calculate the concentration of the compound.

(4). Explain the importance of-SH functional groups in stabilizing structure of proteins.

(5). Explain the principle of density gradient centrifugation and describe how this technique can be used in purification of cell organelles.

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