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Chapters
2: Reproduction in Lower and Higher Animals
3: Inheritance and Variation
4: Molecular Basis of Inheritance
5: Origin and Evolution of Life
6: Plant Water Relation
7: Plant Growth and Mineral Nutrition
8: Respiration and Circulation
9: Control and Co-ordination
10: Human Health and Diseases
11: Enhancement of Food Production
▶ 12: Biotechnology
13: Organisms and Populations
14: Ecosystems and Energy Flow
15: Biodiversity, Conservation and Environmental Issues
![Balbharati solutions for Biology [English] 12 Standard HSC Maharashtra State Board chapter 12 - Biotechnology - Shaalaa.com](/images/biology-english-12-standard-hsc-maharashtra-state-board_6:429f7f9009264240a77c8945f6342a63.JPG "Balbharati solutions for Biology [English] 12 Standard HSC Maharashtra State Board chapter 12 - Biotechnology")
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Solutions for Chapter 12: Biotechnology
Below listed, you can find solutions for Chapter 12 of Maharashtra State Board Balbharati for Biology [English] 12 Standard HSC Maharashtra State Board.
Balbharati solutions for Biology [English] 12 Standard HSC Maharashtra State Board 12 Biotechnology Exercises [Pages 291 - 292]
Choose the correct option
The bacterium which causes a plant disease called crown gall is _______________.
Helicobacter pylori
Agrobacterium tumifaciens
Thermophilus aquaticus
Bacillus thuringienesis
The enzyme nuclease hydrolyses ______ of polynucleotide chain of DNA.
Hydrogen bonds
Phosphodiester bonds
Glycosidic bonds
Peptide bonds
In vitro amplification of DNA or RNA segment is known as ___________.
chromatography
Southern blotting
polymerase chain reaction
gel electrophoresis
Which of the following is the correct recognition sequence of restriction enzyme hind III?
5'---A-A-G-C-T-T---3'
3'---T-T-C-G-A-A---5'5'---G-A-A-T-T-C---3'
3'---C-T-T-A-A-G---5'5'---C-G-A-T-T-C---3'
3'---G-C-T-A-A-G---5'5'---G-G-C-C---3'
3'---C-C-G-G---5'
Recombinant protein .................. is used to dissolve blood clots present in the body.
insulin
tissue plasminogen activator
relaxin
erythropoietin
The recognition sequence of restriction enzymes is generally ______ nucleotide long.
2 to 4
4 to 8
8 to 10
14 to 18
Very short answer type question
Name the vector which is used in the production of human insulin through recombinant DNA technology.
Which cells from Langerhans of the pancreas do produce a peptide hormone insulin?
Give the role of Ca++ ions in the transfer of the recombinant vector into the bacterial host cells.
Expand the following acronym which is used in the field of protechnology.
YAC
Expand the following acronym which is used in the field of protechnology.
RE
Expand the following acronym which is used in the field of protechnology.
dNTP
Expand the following acronym which is used in the field of protechnology.
PCR
Expand the following acronym which is used in the field of protechnology.
GMO
Expand the following acronym which is used in the field of protechnology.
MAC
Fill in the blanks and complete the chart.
| GMO | Purpose |
| i. Bt cotton | ____________ |
| ii. _____________ | Delay the softening of tomato during ripening. |
| iii. Golden rice |
____________ |
| iv. Holstein cow | ____________ |
Short answer type question
Explain the properties of a good or ideal cloning vector for rDNA technology.
A PCR machine can raise the temperature up to 100°C but after that, it is not able to lower the temperature below 70°C automatically. Which step of PCR will be hampered first in this faulty machine? Explain why?
In the process of rDNA technology, if two separate restriction enzymes are used to cut vector and donor DNA then which problem will arise in the formation of rDNA or chimeric DNA? Explain.
Match and write the pairs.
| Recombinant protein | It’s used in or for |
| i. platelet-derived growth factor | a. Anemia |
| ii. α-antitrypsin | b. cystic fibrosis |
| iii. Relaxin | c. Haemophilia A |
| iv. Erythropoietin | d. Diabetes |
| v. Factor VIII | e. Emphysema |
| vi. DNase | f. Parturition |
| g. Atherosclerosis |
Long answer type question
Define and explain the term
Biopiracy
Define and explain the term
Biopatent
Define and explain the term
Bioethics
Explain the steps in process of rDNA technology with suitable diagrams.
Explain the gene therapy.
Give two types of gene therapy.
How are the transgenic mice used in cancer research?
Give the steps in PCR or polymerase chain reaction with suitable diagrams.
What is a vaccine?
Give advantages of oral vaccines or edible vaccines.
Enlist different types of restriction enzymes commonly used in rDNA technology? Write about their role.
Enlist and write in brief about the different biological tools required in rDNA technology.
Solutions for 12: Biotechnology
Balbharati solutions for Biology [English] 12 Standard HSC Maharashtra State Board chapter 12 - Biotechnology
Shaalaa.com has the Maharashtra State Board Mathematics Biology [English] 12 Standard HSC Maharashtra State Board Maharashtra State Board solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. Balbharati solutions for Mathematics Biology [English] 12 Standard HSC Maharashtra State Board Maharashtra State Board 12 (Biotechnology) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
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Concepts covered in Biology [English] 12 Standard HSC Maharashtra State Board chapter 12 Biotechnology are Biotechnology, Process and Principles of Biotechnology, Methodology for rDNA Technology, Commercial Applications of Biotechnology, Bioethics, Effects of Biotechnology on the Environment, Biopatent and Biopiracy, Transgenic Plants, Transgenic animals, Effects of Biotechnology on Human Health, Tools and techniques for gene cloning/ rDNA technology.
Using Balbharati Biology [English] 12 Standard HSC Maharashtra State Board solutions Biotechnology exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in Balbharati Solutions are essential questions that can be asked in the final exam. Maximum Maharashtra State Board Biology [English] 12 Standard HSC Maharashtra State Board students prefer Balbharati Textbook Solutions to score more in exams.
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