NCERT Solutions for Class 12 Biology Chapter 12 Biotechnology and its Applications
NCERT Solutions For Class 12 Biology Biotechnology and its Applications - Free PDF Download
Get Access to NCERT solutions for class 12 biology chapter 12 biotechnology and its applications here: In the solutions of NCERT for class 12 biology chapter 12 biotechnology and its applications, you will get all the questions related to the different uses and applications of biotechnology in the real world. You will learn that recombinant DNA technology (RDT) has made it possible for us to engineer on a molecular basis with the help of microbes, plants, and animals such that they can have novel capabilities. In NCERT solutions for class 12 biology chapter 12, you will get questions from topics which include, therapeutics, diagnostics, (GMCs) genetically modified crops for agriculture, processed food, bioremediation and other waste management. Read the entire article to know more on chapter 12 Biology class 12 NCERT notes. In order to study for the board exams, students can use these NCERT Solutions for Class 12. Additionally, these answers are available for free download in PDF format. It provides answers in accordance with the most recent CBSE Syllabus 2022–23 and the NCERT Textbook.
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In NCERT solutions for 12 biology chapter, you will also get answers to such questions which has been asked from the interesting topic that is Gene therapy. Biotechnology and its applications class 12 ncert pdf will tell you that gene therapy is the insertion or injection of genes into an individual’s cells and tissues to treat a kind of diseases, like hereditary diseases. It can be performed by replacing a defective mutant allele with a functional targeted gene or allele which involves gene amplification. To know more about this processer, you have to go through biotechnology and its applications ncert pdf questions and answers.In case, you have any doubts or queries in solving these questions then the 12 biology chapter will help you to solve them. Your can find comprehensive answers to every chapter of the NCERT Solutions for Class 12 Biology, which are updated to the CBSE Syllabus 2022–23.
NCERT Exemplar for class 12 biology chapter 12 biotechnology and its applications
NCERT Solutions for Class 12 Biology Chapter 12: Solved Exercise Questions
Q1. Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because-
(a) bacteria are resistant to the toxin
(b) toxin is immature
(c) toxin is inactive
(d) bacteria encloses toxin in a special sac.
(c). Toxin is inactive
The Bt toxin remains inactive in the bacteria. It gets activated after entering the insect gut due to the alkaline pH of the gut.
Q2. What are transgenic bacteria? Illustrate using any one example.
Transgenic bacteria are the bacteria whose genes have been manipulated by transferring foreign genes into its genome through recombinant DNA technology. For example, transgenic E.coli was developed by introducing in it, two DNA sequences of A and B chains of human insulin in order to produce insulin to treat diabetic patients.
Q3. Compare and contrast the advantages and disadvantages of production of genetically modified crops.
GM crops are genetically modified crops that can be made by transferring desirable characteristics in them. The main advantage of GM crops is that they are highly productive and they yield an increased amount of produce. The other advantages of the production of genetically modified crops in order to increase the yield are as follows:
1. GM crops can be developed for increasing the nutritional quality of crop products. For example golden rice with enhanced vitamin, A content is a GM crop.
2. Many GM crops are developed to have insect pest resistance, thus, decreasing our dependence on chemical-based insecticides/pesticides.
3. GM crops are made to be highly tolerant of environmental conditions.
4. Gm crops are highly tolerant to abiotic conditions
5. GM Crops minimises post-harvesting losses.
GM crops possess some disadvantages also. The presence of a transgene in commercial crops endangers wild species. The gene for Bt toxin expressed in pollen endangers pollinators such as honeybees. These crops supply allergens and transfer antibiotic resistance markers. They are damaging to the genetic environment.
NCERT solutions for class 12 biology chapter 12 biotechnology and its applications:
Q4. What are Cry proteins? Name an organism that produces it. How has man exploited this protein to his benefit?
Cry proteins are toxin protein encoded by cry genes. These are produced by a bacteria named Bacillus thuringiensis which itself remain safe from cry toxins b y having methylated DNA. Cry proteins act as insecticides as they are toxic to insects. This property of Cry proteins has been exploited in producing genetically modified crops such as Bt cotton, Bt brinjal etc. These crops are resistant to insects of order Lepidoptera.
Q5. What is gene therapy? Illustrate using the example of adenosine deaminase (ADA) deficiency.
Gene therapy refers to a collection of methods and technologies allowing correction or replacement of a defective or dysfunctional gene. While correcting, a normal gene is transferred into the individual's embryo to replace and perform the function of the original defective gene. One well-established example of gene therapy is ADA deficiency. This is caused by the deletion of a gene encoding for enzyme adenosine deaminase. The gene therapy for ADA deficiency was carried out in a 4-year-old patient by the following method:
1. The lymphocytes of a patient were grown in a culture in vitro.
2. A functional ADA cDNA was introduced in these lymphocytes using a retroviral vector.
3. The transformed lymphocytes were introduced back into the blood of the patient.
4. The patient is regularly infused with transformed lymphocytes
5. For a permanent cure of ADA deficiency, a gene isolated from bone marrow cell is introduced in the patient in the early stage.
Q6. Diagrammatically represent the experimental steps in cloning and expressing a human gene (say the gene for growth hormone) into a bacterium like E. coli?
Diagrammatic representation of steps in DNA cloning
Q7. Can you suggest a method to remove oil (hydrocarbon) from seeds based on your understanding of rDNA technology and chemistry of oil?
Recombinant DNA technology is a technique by which the genome of an organism can be manipulated Oils are made of glycerols and fatty acids. So using recombinant DNA technology we can silence the genes coding for glycerol and fatty acids and remove oil (hydrocarbon) from seeds.
Q8. Find out from internet what is golden rice.
Golden rice is a variety of rice crop, genetically engineered to synthesise beta carotene which is a precursor of vitamin A. The normal rice produces beta carotene but in leaves, to increase the production of vitamin A, beta carotene should be synthesised in the endosperm. Golden rice was developed by transferring two beta-carotene biosynthesis genes into the rice genome. These genes include psy (phytoene synthase) from a plant named Narcissus pseudonarcissus (daffodil) and crtI (phytoene desaturase) from the soil bacterium Erwinia uredovora. These genes were under endosperm-specific promoter so that they will show expression in the endosperm.
NCERT solutions for class 12 biology chapter 12 biotechnology and its applications:
Q9. Does our blood have proteases and nucleases?
Proteases and nucleases are two enzymes that catalyse the hydrolysis of proteins and nucleic acids respectively. These enzymes are not found in blood, instead, blood contains protease inhibitors protecting the proteins being broken down. Similarly, nucleases are also absent in blood.
Q10. Consult internet and find out how to make orally active protein pharmaceutical. What is the major problem to be encountered?
Orally active protein pharmaceuticals contain biologically active proteins, peptides etc. These are taken into the body by oral route in various formulations. The production of these protein pharmaceuticals involves encapsulation of proteins or peptides in liposomes using penetration enhancers. These proteins or peptides are used for the treatment of diseases and they can also be used as vaccines.
The major problem encountered in the administration of these pharmaceuticals is that they are ingested orally, and digested by the proteases present in the stomach before showing results. This is why such pharmaceuticals are directly ingested into the target site.
NCERT Solutions for Class 12 Biology Chapter 12 – Biotechnology and Its Applications
Biotechnology and its Applications Class 12 NCERT Solutions: According to the current CBSE Syllabus for 2022–2023, Chapter 12 Biotechnology and Its Applications of Class 12 Biology has been prepared. Overall, the Biotechnology unit receives 10 marks, which is consistent with prior trends. As a result, students can earn up to 10 marks by reviewing and practising questions with NCERT Solutions for Class 12 from these two chapters. After going through the NCERT solutions for class 12 biology chapter 12 biotechnology and its applications, you must be able to understand all the answers of the questions mentioned in the above.
Three critical research areas of biotechnology which you should know for the solutions of NCERT for class 12 biology chapter 12 biotechnology and its applications are given below:
(i) Providing the best catalyst in the form of the improved organism usually a microbe or pure enzyme
(ii) Creating optimal conditions through engineering for a catalyst to act, and
(iii) Downstream processing technologies to purify the protein/organic compound.
Important Topics of NCERT Solutions for Class 12 Biology Chapter 12 Biotechnology and its Applications:
The important topics of CBSE biotechnology book class 12 solutions are given below:
12.1 Biotechnological Applications in Agriculture
12.2 Biotechnological Applications in Medicine
12.2.1 Genetically Engineered Insulin
12.2.2 Gene Therapy
12.2.3 Molecular Diagnosis
12.3 Transgenic Animals
12.4 Ethical Issues
Highlights of NCERT Solutions Class 12 Biology Chapter 12 Biotechnology and Its Applications
Class 12 biology chapter 12 NCERT solutions highlights are given below:
- Chapter 12 biology class 12 NCERT solutions are written in the best possible way using simple language that makes solutions easier to read and understand
- In the NCERT biology class 12 chapter 12 pdf, points are used to frame answers to help understand quickly.
- Biotechnology NCERT solutions content is derived from the textbook by the subject expert.
- Solutions for biotechnology chapter class 12 are as per the latest CBSE Syllabus and guidelines.
- Biotechnology class 12 pdf links are readily available and easily accessible for free.
- Important topics are listed in the biotechnology NCERT solutions.
- Biotechnology applications NCERT is a great resource for information.
- Biotechnology and its applications class 12 NCERT pdf will also help you to prepare for your competitive exams like NEET.
- biotechnology and its applications NCERT solutions will also help you in your 12th board exam.
- Biotechnology class 12 NCERT will also boost your knowledge and interest in biology.
- NCERT is the base of your learning and here it's easy to access.
NCERT Exemplar Class 12 Solutions
|NCERT Exemplar Class 12 Chemistry Solutions|
|NCERT Exemplar Class 12 Mathematics Solutions|
|NCERT Exemplar Class 12 Biology Solutions|
|NCERT Exemplar Class 12 Physics Solutions|
Also Check NCERT Books and NCERT Syllabus here:
- NCERT Books Class 12 Biology
- NCERT Syllabus Class 12 Biology
- NCERT Books Class 12
- NCERT Syllabus Class 12
NCERT Solutions for Class 12 Biology- Chapter wise
Biotechnology and its Applications
NCERT Solutions for Class 12- Subject wise
Frequently Asked Question (FAQs) - NCERT Solutions for Class 12 Biology Chapter 12 Biotechnology and its Applications
Question: How can students prepare for their board exams by using the NCERT Solutions for Class 12 Biology Chapter 12?
Students can focus more clearly and save time by using the NCERT Solutions for Class 12 Biology Chapter 12. The experts carefully prepare the solutions in accordance with the most recent CBSE Syllabus. To get a clear understanding of the concepts, which are crucial for the CBSE exams, students can consult the solutions while completing the questions from the textbook.
Question: What is the meaning of Biotechnology, according to NCERT Solutions for Class 12 Biology Chapter 12?
The field of biotechnology, according to NCERT Solutions for Class 12 Biology Chapter 12, uses living things to advance technology in a variety of areas for the long-term welfare of humanity. It has uses in both the medical and agricultural fields. Since more than 6000 years ago, the biological processes of living things have been utilised to create necessary goods like bread, cheese, alcohol, etc.
Question: How will studying Chapter 12 of NCERT Solutions for Class 12 Biology benefit me?
The applications of biotechnology include:
- Biotechnology – Principles and processes
- Biotechnology and its applications
- Biotechnological Applications in Agriculture
- Biotechnological Applications in Medicine
- Transgenic Animals
- Ethical Issues
Question: what are the Benefits of NCERT solutions for class 12 biology chapter 12 biotechnology and its applications?
The Benefits of NCERT solutions for class 12 biology chapter 12 biotechnology and its applications are:
- You will get all the 12 Biology chapter important questions to this chapter and it will help you to score good marks in the exam.
- Biotechnology and its applications class 12 ncert pdf will also help you to prepare for your competitive exams like NEET.
- Biotechnology and its applications ncert pdf will also help you in your 12th board exam.
- Biotechnology class 12 ncert will also boost your knowledge and interest in biology.
- NCERT is the base of your learning and here it's easy to access.
Question: How to download biotechnology and its applications class 12 ncert pdf?
To download biotechnology and its applications class 12 ncert pdf for 12 biology chapter , students can use the online webpage to pdf converter tools. To Score Well in the examination, follow the NCERT syllabus and exercise given in the NCERT Book. To practice more problems, students can refer to the NCERT exemplar.
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Questions related to CBSE Class 12th
i couldnt clear 1st compartment (which held in August 2022) cbse class 12th so can I give improvement in all subjects which to be held on March 2023. tell me a solution i need more than 75% in class 12th
Yes you can appear for the compartment paper again since CBSE gives three chances to a candidate to clear his/her exams so you still have two more attempts. However, you can appear for your improvement paper for all subjects but you cannot appear for the ones in which you have failed.
I hope this was helpful!
i was not able to clear 1st compartment and now I have to give 2nd compartment so can I give improvement exam next year? plz tell me very much tensed(cbse class 12th)
If you was not able to clear 1st compartment and now you giving second compartment so YES, you can go for your improvement exam next year but if a student receives an improvement, they are given the opportunity to retake the boards as a private candidate the following year, but there are some requirements. First, the student must pass all of their subjects; if they received a compartment in any subject, they must then pass the compartment exam before being eligible for the improvement.
As you can registered yourself as private candidate for giving your improvement exam of 12 standard CBSE(Central Board of Secondary Education).For that you have to wait for a whole year which is bit difficult for you.
Positive side of waiting for whole year is you have a whole year to preparing yourself for your examination. You have no distraction or something which may causes your failure in the exams. In whole year you have to stay focused on your 12 standard examination for doing well in it. By this you get a highest marks as a comparison of others.
Believe in Yourself! You can make anything happen
All the very best.
if i am giving improvement in one subject this year, will i be able to give improvement in more subjects next year?
I appreciate your Interest in education. See the improvement is not restricted to one subject or multiple subjects and we cannot say if improvement in one subject in one year leads to improvement in more subjects in coming year.
You just need to have a revision of all subjects what you have completed in the school. have a revision and practice of subjects and concepts helps you better.
All the best.
I got an RT for 2 subjects, so do I have to give exams for all the subjects in the coming year or just the 2. pls help me
You just need to give the exams for the concerned two subjects in which you have got RT. There is no need to give exam for all of your subjects, you can just fill the form for the two subjects only.
I will have my boards in Feb 2023 (Class 12) and I still havent completed 1 chapter in any subject (Physics, chemistry and maths) , My 11th concepts are not that great but its okish, I wanted to know that If I do start studying from 15th of August Can I get above 85?
If you'll do hard work then by hard work of 6 months you can achieve your goal but you have to start studying for it dont waste your time its a very important year so please dont waste it otherwise you'll regret.