Welcome to the NCERT Solutions for Class 12 Biology - Chapter Biotechnology and its Application. This page offers a step-by-step solution to the specific question from Exercise 0, Question 7: . With detailed answers and explanations for each chapter, students can strengthen their understanding and prepare confidently for exams. Ideal for CBSE and other board students, this resource will simplify your study experience.
Many proteins are secreted in their inactive form. This is also true of many toxic proteins produced by micro organisms. Explain how the mechanism is useful for the organism producing the toxin?
Development of insecticidal resistance is the application of transgenic plants. By the Recombinant DNA technology, it is possible to develop crops which are intrinsically resistant to insects. When the toxins are present in inactive form, the organisms which produces these toxins, does not harm anymore. This mechanism is useful for micro-organisms because they become active by certain metabolic and biochemical changes like pH or temperature. For example: in Bt (Bacillus thuringiensis) toxin, insecticidal proteins called cry proteins, when get accumulated in the bacterium as an inactive state and after ingestion by the insect, in alkaline pH of gut, this protoxin cleaved by protease, results in the shorter version of proteins and shows toxicity/ acidity, by binding inside of the insect’s gut and damages the surface epithelium. Thus, these toxins resist the proteins and by the action of host, these micro- organisms does not get killed.
NCERT questions are designed to test your understanding of the concepts and theories discussed in the chapter. Here are some tips to help you answer NCERT questions effectively:
Stay updated with our latest educational content and study tips
Parent-Teacher Meetings (PTMs) are more than quick updates on marks — they’re a chance to build a real partnership between home and school. A good Parent-Teacher Meeting conversation helps parents see beyond grades. It opens up insights about a child’s strengths, struggles, emotions and even hidden talents. When parents participate actively, they don’t just track […]
Read MoreIn today’s world of endless information , knowing how to think is more important than knowing what to think . From school projects to real – life decisions , critical thinking helps students question ideas , analyze facts and form logical conclusions . But what exactly does critical thinking mean ? Simply put , it’s […]
Read MoreEvery student dreams of better grades , stronger focus and more study time – but the real challenge isn’t starting, it’s staying consistent . Building productive study habits is not about studying all day , it’s about studying smart . In today’s fast – paced digital world, distractions are everywhere – from endless phone notifications […]
Read MoreOnline gaming has rapidly become one of the most popular pastimes among children. Whether it’s multiplayer mobile games , PC adventures or console challenges , kids are spending more time than ever in the virtual world . On the surface, gaming seems entertaining and even educational – improving hand- eye coordination , teamwork and problem […]
Read MoreWelcome to the NCERT Solutions for Class 12 Biology - Chapter . This page offers a step-by-step solution to the specific question from Excercise 0 , Question 7: Many proteins are secreted in their inactive form. This is also true of many toxic proteins produced....
Add Comment