Skip to main content

Fourth Semester M.Sc. Degree Examination, September 2019BotanySpecial Paper II - ElectiveBO 242 a: BIOTECHNOLOGY(2013 Admission onwards)

Reg. No....... 
Name.........

G-5263
Fourth Semester M.Sc. Degree Examination, September 2019
Botany
Special Paper II - Elective
BO 242 a: BIOTECHNOLOGY
(2013 Admission onwards)

Max. Marks: 75


1.Answer the following questions:
1.Humulin
2.YAC
3. Cybrids
4.Hybridomas
5.IPR
6.Gene therapy
7.C DNA library
8.AFLP
9. Hairy root culture
10. Somacional variation
(10 x 1=10 Marks)

II.Answer the following questions in not more than 50 words:

11. (a) What are immobilized enzymes? What is its advantage?
OR
(b) Write a short note on molecular farming.

12. (a) Give an account of bioprocess technology for the production of secondary metabolites.
OR
(b) What are bioreactors? How it operates?

13. (a) What are probiotics?. How do they work?
OR
(b) Discuss the methodology and application of western blotting.


14. (a) Briefly explain the application of protoplast culture
OR
(b) Write a short note on gene therapy


15. (a) What are reporter genes? Discuss its utility in transformation studies
OR
(b) What are cosmids ? What is its application.

(5 x 2 = 10 Marks)
III. Answer the following questions in not more than 150 words:

16. (a) Explain PCR and its different forms with significance.
OR

(b) Explain different types of restriction enzymes and target sites.

17. (a) Explain DVA finger printing and its application.
OR
(b) Explain the technique and application of callus culture.

18. (a) Explain the role of linkers, adaptors and homopolymers in the generation of recombinant DNA.
OR
(b) Discuss the role of Agrobacterium and its plasmid in the transformation of plants.

19. (a) Explain the microbial production and purification of industrial enzymes and organic compounds.
OR
(b) Explain fermentation technology and its application.

20. (a) Explain the impact of biotechnology on agri.- biodiversity, medicine and
environment.
OR
(b) What is genomic DNA library? Discuss the details about the construction of genomic library.
21. (a) What is cell suspension culture? Explain the kinetics of growth and elicitation methods related to suspension culture.
OR
(b) What is bioremediation? Give an account of role of transgenic microbes in bioremediation.
22. (a) Explain gene targeting and its application
OR
(b) Explain site directed mutagenesis with its significance.

(7 x 5 = 35 Marks)


IV. Answer the following questions in not more than 250 words:

23. (a) Explain different types of gene transfer technologies and its application.
OR
(b) Explain the replication of bacterial DNA and regulation of gene expression

24. (a) Explain the application of transgenic technology in plants
OR
(b) Explain about the application of plant tissue culture technology for the large scale production of crop plants.


(2 x 10 = 20 Marks)




Comments

Popular Posts

RFLP (Restriction Fragment Length Polymorphism)

RFLP (Restriction Fragment Length Polymorphism ) Introduction RFLP is one of the earliest DNA-based molecular marker techniques. It detects variation in DNA sequences between individuals, caused by mutations, insertions, deletions, or restriction enzyme recognition site changes. First developed in late 1970s–1980s. Used extensively in genetic mapping, DNA fingerprinting, and gene detection. It is co-dominant, locus-specific, and highly reproducible. Principle RFLP is based on the fact that DNA from different individuals may differ in the presence or absence of restriction enzyme recognition sites, leading to different fragment sizes after digestion. Key idea: DNA → Restriction enzyme digestion → Fragments → Gel separation → Detection using labeled probe → Polymorphism analysis Materials Required Genomic DNA from the organism Restriction enzymes (e.g., EcoRI, HindIII) Agarose or polyacrylamide gel Nylon or nitrocellulose membrane Radioactive or non-radioactive DNA probe Autoradiography ...

Protein Sequence DatabasesPIR, SWISS-PROT and TREMBEL

Protein Sequence Databases PIR, SWISS-PROT and TREMBEL 1. Introduction Protein sequence databases are biological databases that store information about amino acid sequences of proteins, along with their functional, structural, and biochemical characteristics. Since proteins are the functional molecules of the cell, protein databases are essential for understanding gene expression, metabolism, enzymatic activity, signaling pathways, and evolution. Protein sequence databases mainly contain data derived from translated nucleotide sequences and experimental protein studies. 2. Types of Protein Sequence Databases Protein sequence databases are broadly classified into: A. Primary Protein Databases Contain original protein sequence data Minimal or no manual annotation B. Secondary Protein Databases Derived from primary databases Provide curated functional and structural information C. Composite Protein Databases Combine protein data from multiple sources Reduce redundancy 3. Protein Informati...

༺☆ DOT BLOT (DOT BLOTTING)

DOT BLOT (DOT BLOTTING) *ੈ✩‧₊˚༺☆༻*ੈ✩‧₊˚*ੈ✩‧₊˚༺☆༻*ੈ✩‧₊˚ Introduction Dot blot is a simple and rapid molecular biology technique used to detect specific DNA, RNA, or proteins immobilized directly onto a solid membrane without electrophoretic separation. It is a modification of Southern, Northern, and Western blotting, but unlike them, dot blot does not involve gel electrophoresis. The technique is mainly used for screening large numbers of samples, qualitative or semi-quantitative analysis, and diagnostic purposes. Principle of Dot Blot The principle of dot blotting is based on specific binding between a target molecule and a labeled probe or antibody. The sample containing DNA/RNA/protein is directly applied as a dot on a nitrocellulose or nylon membrane. The molecules bind to the membrane by hydrophobic and electrostatic interactions. The membrane is then incubated with a specific probe (for nucleic acids) or antibody (for proteins). Detection is achieved using radioactive, enzymatic, ...

❃LC-MS (LIQUID CHROMATOGRAPHY – MASS SPECTROMETRY)

LC-MS (LIQUID CHROMATOGRAPHY – MASS SPECTROMETRY)  ┏━━━━━ •❃°•°❀°•°❃•━━━━•━━━┓ 1. INTRODUCTION LC-MS is a hyphenated analytical technique combining Liquid Chromatography (LC) and Mass Spectrometry (MS). It is used for separation, identification, and quantification of compounds in complex mixtures. LC separates analytes based on polarity, size, or charge, while MS detects molecules based on mass-to-charge ratio (m/z). Developed in the 1970s–1980s, LC-MS is now widely used in pharmaceutical, clinical, environmental, and food analysis. Importance : Detects trace levels of compounds (ng–pg range) Analyzes non-volatile, thermally labile compounds that cannot be analyzed by GC-MS Provides structural information through mass fragmentation Example: Detection of drugs in plasma, protein identification in proteomics, pesticide residue analysis in food. 2. COMPONENTS OF LC-MS The LC-MS system has three main parts: A. Liquid Chromatograph (LC) Function: Separates components of a mixture befor...

Biological Databases – Types of Data and DatabasesNucleotide Sequence Databases (EMBL, GenBank, DDBJ)

Biological Databases – Types of Data and Databases Nucleotide Sequence Databases (EMBL, GenBank, DDBJ) 1. Introduction Biological databases are systematic, computerized collections of biological information that allow efficient storage, retrieval, updating, and analysis of large volumes of biological data. With the advent of genome sequencing, molecular biology, and bioinformatics, biological databases have become essential tools in biological research. These databases support studies in genomics, proteomics, evolutionary biology, taxonomy, medicine, agriculture, and biotechnology. 2. Types of Data Stored in Biological Databases Biological databases store diverse types of biological information, including: 1. Sequence Data DNA sequences RNA sequences Protein sequences 2. Structural Data Three-dimensional structures of proteins Nucleic acid structures 3. Functional Data Gene functions Enzyme activity Regulatory elements 4. Genomic Annotation Data Gene location Exons, introns Promoters a...

❥ Southern Blotting Notes

Southern Blotting  ❥ 𓆞❥ 𓆞❥ 𓆞❥ 𓆞❥ 𓆞❥ 𓆞❥ 𓆞❥ 𓆞❥ 𓆞❥  Introduction Southern blotting is a molecular biology technique used for the detection of specific DNA sequences in a complex mixture of DNA. It was developed by Edwin M. Southern in 1975. The method involves restriction digestion of DNA, separation by gel electrophoresis, transfer (blotting) onto a membrane, and hybridization with a labeled DNA probe. Principle of Southern Blotting The technique is based on the principle of complementary base pairing. A single-stranded labeled DNA probe hybridizes specifically with its complementary DNA sequence immobilized on a membrane. Detection of the label confirms the presence and size of the target DNA fragment. Steps Involved in Southern Blotting. 1. Isolation of DNA Genomic DNA is extracted from cells or tissues. DNA must be pure and intact to ensure accurate results. 2. Restriction Enzyme  Digestion DNA is digested using specific restriction endonucleases. Produces DNA f...

Callus Culture and Regeneration of Plants

Callus Culture and Regeneration of Plants Introduction Callus culture is an in vitro plant tissue culture technique in which an unorganized mass of proliferating cells (callus) is induced from explants such as leaf, stem, root, or meristem under aseptic and controlled conditions. These callus cells retain totipotency, enabling regeneration of complete plants under suitable hormonal and nutritional conditions. Callus culture forms the foundation of plant biotechnology, playing a crucial role in micropropagation, genetic transformation, somaclonal variation, and secondary metabolite production. Definition Callus is a mass of undifferentiated parenchymatous cells produced by continuous cell division of explant tissues when cultured on a nutrient medium supplemented with plant growth regulators. Principle of Callus Culture Based on the concept of cellular totipotency. Dedifferentiation of mature cells occurs due to the action of auxins and cytokinins. Redifferentiation and organ formation ...

••CLASSIFICATION OF ALGAE - FRITSCH

      MODULE -1       PHYCOLOGY  CLASSIFICATION OF ALGAE - FRITSCH  ❖F.E. Fritsch (1935, 1945) in his book“The Structure and  Reproduction of the Algae”proposed a system of classification of  algae. He treated algae giving rank of division and divided it into 11  classes. His classification of algae is mainly based upon characters of  pigments, flagella and reserve food material.     Classification of Fritsch was based on the following criteria o Pigmentation. o Types of flagella  o Assimilatory products  o Thallus structure  o Method of reproduction          Fritsch divided algae into the following 11 classes  1. Chlorophyceae  2. Xanthophyceae  3. Chrysophyceae  4. Bacillariophyceae  5. Cryptophyceae  6. Dinophyceae  7. Chloromonadineae  8. Euglenineae    9. Phaeophyceae  10. Rhodophyceae  11. Myxophyce...

Third Semester M.Sc. Botany -Internal Examination Feb 2024 Plant breeding, horticulture & Biostatistics

First Semester M.Sc. Botany -Internal Examination Feb 2024 Plant breeding, horticulture & Biostatistics I Answer the following questions . 1.What do you mean by microcenters? 2. What are biofertilizers? 3. What is acclimatization? 4. Differentiate heterosis and hetrobeltiosis 5. What is null hypothesis? 6. What is ANOVA 7.What is arboriculture 8. Expand NBPGR 9. Name the most potent chemical mutagen 10. What do you mean by male sterility? How is it attained in plant breeding method (10*1= 10) II Answer the following in not more than 50 words 11. a. Explain hybridization and mention its procedure. OR b. Different types of sampling methods. 129. a. Brief account on indoor gardens. OR 13b. What is seed certification? How is it done? 10. a. What is topiary? Give examples. Differentiate OR b. What is seed propagation? correlation & Regression.  14. a. Write short notes on the concept of the centers of origin proposed Vavilov b. What is landscaping? OR 12. a. Write notes on cutta...

STR (Short Tandem Repeat) Markers – Detailed Notes

STR (Short Tandem Repeat) Markers – Detailed Notes Introduction STRs, also called microsatellites, are short sequences of 2–6 base pairs repeated in tandem at specific loci in the genome. Examples: (CA)n, (GT)n, (TATC)n, where n is the number of repeats. STRs are highly polymorphic, co-dominant, and widely used in forensic analysis, paternity testing, genetic mapping, and population genetics. STRs occur throughout the genome, mostly in non-coding regions, but can occasionally be in coding sequences. Structure of STR Repeat motif: 2–6 bp (e.g., CA, GT, GATA) Number of repeats: Varies among individuals → basis of polymorphism Flanking regions: Conserved sequences on both sides of repeats → used to design PCR primers Principle STR polymorphism arises from variation in the number of repeat units at a specific locus among individuals. PCR amplification using primers flanking STR → fragments of different lengths → fragment size indicates allele Allelic differences allow distinction between i...