2022
B. Sc. (VI Semester) Examination
ZOOLOGY
Paper: ZOO/T6/363
(Invertebrate Biosystematics and Type Specimen Studies)
Full Marks : 80
Pass Marks : 35%
Time : Three Hours
Notes: (i) Answer all questions.
(ii) The figures in the margin indicate full marks for the questions.
1. Answer the following questions: 2x5=10
(a) What is the function of rRNA?
(b) What are the various eukaryotic DNA polymerases?
(c) What is the function of acceptor arm of tRNA?
(d) What is Bt-brinjal?
(e) What is gene cloning?
2. Write short notes on any four of the following: 5×4=20
(a) Role of sigma factor in transcription
(b) Role of prokaryotic DNA polymerases
(c) Structure of mRNA
(d) Amino acid activation
(e) DNA topoisomerases
(f) Antibiotic resistance markers in plasmids
3. Answer any five of the following: 10x5=50
(c) Structure of mRNA
(d) Amino acid activation
(e) DNA topoisomerases
(f) Antibiotic resistance markers in plasmids
3. Answer any five of the following: 10x5=50
(a) Describe the structure and functions of DNA with diagram.
(b) Elaborate the roles of various enzymes during DNA replication in eukaryotes.
(c) Describe the mechanism of positive regulation of the lac operon with the help of diagram.
(d) Elaborate the process of selection of successful colonies in recombinant DNA technology.
(e) Describe the characteristics of genetic code.
(f) Explain the various regions of a vector plasmid with the help of an examplc.
(g) Describe the various applications of genetic engineering in agriculture.
(g) Describe the various applications of genetic engineering in agriculture.
