Class 12 Biology - MP
Biotechnology and its Applications
The chapter 'Biotechnology and its Applications' explores how genetic engineering and recombinant DNA technology are practically used to benefit human life. MPBSE Class 12 students will learn about the creation of genetically modified organisms (GMOs) like Bt cotton for pest resistance, the production of recombinant human insulin to treat diabetes, and gene therapy for correcting hereditary diseases. It also covers the ethical issues, biopiracy, and patenting laws related to biological resources. This chapter is highly scoring in board exams, frequently featuring direct questions on agricultural and medical applications, making it essential for thorough revision.
Start Learning FreeKey Concepts
Bt Cotton
A genetically modified crop containing genes from the bacterium Bacillus thuringiensis, which produces crystal proteins toxic to specific insect pests like bollworms.
RNA Interference (RNAi)
A cellular defense mechanism used in eukaryotes that silences specific messenger RNA (mRNA) to protect plants from parasitic nematode infections.
Genetically Engineered Insulin
Human insulin (Humulin) produced using recombinant DNA technology in E. coli bacteria by separately cloning chains A and B and linking them via disulfide bonds.
Gene Therapy
An experimental technique that introduces healthy genes into a patient's cells to correct defective genes responsible for hereditary diseases like ADA deficiency.
Biopiracy and Biopatents
The unauthorized extraction and commercial exploitation of traditional biological knowledge and resources from developing countries without proper compensation.
Important Formulas
Board Exam Info
In the Madhya Pradesh Board (MPBSE) Class 12 Biology examination, this chapter typically carries around 4 to 6 marks. Students can expect objective type questions (multiple-choice or fill-in-the-blanks), short-answer questions (2-3 marks) on examples like Bt cotton and gene therapy, and long-answer questions (4 marks) detailing applications in medicine or agriculture and ethical issues.
Frequently Asked Questions
Why doesn't the Bt toxin kill the Bacillus thuringiensis bacterium itself?
The Bt toxin is produced as an inactive protein called protoxin, which only becomes active when exposed to the high alkaline pH of an insect's gut.
What is the main advantage of producing human insulin using E. coli?
It eliminates the allergic reactions and immune responses caused by insulin extracted from the pancreas of slaughtered cattle and pigs.
What is the difference between biopiracy and biopatent?
Biopiracy is the illegal theft of biological resources and traditional knowledge, whereas a biopatent is the legal monopoly granted for an invention derived from biological materials.
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