Std XII. Unit Test I - 2021
Biology
Marks : 50 Time : 1: 30
I. Choose the best answer. 5×1=5.
1.Which one of the following is used as a Biosensor?
a PHB b. PLA
c.GFP. d.USDA
2. Plasmids are
a.circular protein molecules.
b.required by Bacteria
c. Tiny Bacteria
d. Confer resistance to antibiotics
3.An analysis of chromosomal DNA using the southern hybridization technique does not use
a. Electrophoresis
b. Blotting
c. Auto radiography
d. PCR
4.Which year U.S.Patent and Trademark office granted patent on Basmati?
a. 1997 b. 1995
c. 2002.d. 2005
5. RNA interference is seen in plant feeding
a. Cockroach
b. Insects
c. Nematodes
d. Birds.
II.Anwer any five of the following 5×2=10
1. Define Zymology.
2. What is PCR ?
3. Draw blunt and sticky ends.
4. What do you mean by ori?
5. What is Electrophoresis and name the dye used in this technique?
6. Name the plants that underwent Bio piracy?
7. Name the genes present in Dhara Mustard Hybrid 11?
8. Define RNA Interference?
III. Answer any five of the following. Question No. 3. Compulsory. 5×3=15
1.What are the materials used to grow microorganisms like Spirullina?
2. Name the chemicals used in gene transfer?
3. What do you know about pBR 322?
4. Compare the various Blotting techniques?
5. Notes on CRISPR Cas9.
6. Write down the microbial source and name of cleavage end of the following:
a.Alu I b.EcoRI
7. Define Palindrome sequence.
8. Based on which property W.R.Grace sought a patent from EPO?
IV. Answer any four of the following. 4×5=20
1. Is there any possibilities to transfer a suitable desirable gene to host plant without vectors?. Justify your answer by giving two examples OR
1..Explain Biological hydrogen production by Algae with diagram.
2. What is Single Cell Protein? Name some microorganisms involved in the production of SCP and add a note on its applications. OR
2."Recombinant cells express the characters but the non recombinants are not." Explain this statement with diagram.
3. What are the advantages and disadvantages of Bt Cotton.? OR
3. What is Southern blotting technique? Explain the steps.
4. What are the benefits and risks of GM Food? OR
4. Describe the Upstream and Downstream process in the Bio reactor.
0 Comments