Download SGBAU BSc 2019 Summer 6th Sem Zoology Molecular Biology n Biotechnology Question Paper

Download SGBAU (Sant Gadge Baba Amravati university) BSc 2019 Summer (Bachelor of Science) 6th Sem Zoology Molecular Biology n Biotechnology Previous Question Paper

AVV?l 772
B.Sc. (Part?lll) Semester?Vl Examination
ZOOLOGY
(Molecular Biology and Biotechnology)
Time : Three Hours] [Maximum Marks : 80
Note :~(1) All the questions are compulsory.
(2) Question No. 1 carries 8 marks.
(3) Question Nos. 2 to 7 carry 12 marks each.
(4) Illustrate your answers with suitable diagrams wherever necessary.
1. (a) Fill in the blanks :
(i) The following nucleic acid has a left handed helix ? __. 1/1
(ii) Gcnc as unit of Mutation is called as _. [/2
(iii) In DNA guanine always pairs with _,_- '/:
(iv) ELISA is based 0n _. '/2
(b) Choose the correct alternatives from the following :
(v) How many codons are called to code for all 20 essential amino acids ?3 V:
(a) 20 (b) 4
(c) 61 (d) 60
(vi) Transcription takes place in : V2
(:1) Matrix (b) Nucleus
(c) Cystol (d) Cytoplasm
(vii) The anticodon region is ah important structural component of __. '/2
(a) m-RNA (b) DNA
(c) r-RNA ' (d) t-RNA
(viii)Thc antibodies are *. ?/2
(a) Carbohydrates (b) Proteins
(c) Lipids (d) Germs
(c) Answer in one sentence each :
(ix) What is point mutation ? l
(x) What is Lambda phage vector ?? 1
(xi) What is bacteriophage '3 l
(xii) What are introns ? l
2. Describe mitochondrial DNA. 12
OR
Explain the structural characteristics of clover leaf model of tRNA and its functions.
3. Describe the mechanism of DNA Replication. 12
OR
Describe overlapping gene and jumping gene.
YBC?IS339 1 (Contd.)

YBC
Attempt the following :
(a) Features of Genetic cnde?
(b) Britten Davidson Model.
(0) Transcription of mRNA.
OR
(d) Draw a well-labclled diagram? of Lac-operun model.
(6) 'I?ranslatinn.
(1?) Gene regulation
Explain the following :
(g) Frame shift mutations.
(h) Southern blotting.
(i) Polymerase (?hain Rcacmms (PCR).
0R
(j) Signi?c?mce of Mutation.
(k) Westem blotting.
(1) Applications of DNA ?ngerprinting.
lixplain the following :
(m) Plasmid as a vector.
(n) Somatic cell hybridimt'on.
(,0) Cloning of genes
OR
(p) Applications of monucionnl antibodies.
(q) Recombinant DNA 'I'cchnnlugy.
(r) Splicing of genes.
Describe the following :
(s) T-ccll receptors.
(0 Functions of Antibody.
(u) ELISA.
OR
(v) llaplcns.
(w) Innate Immunity.
(x) RM.
[5339 2
12
525