Class 12 · Biology
Biotechnology and its Applications
NEET questions.
Build recall through active solving with original NEET-style MCQs, worked explanations and chapter-level NCERT provenance.
150 verified questions · NCERT chapter mapped · automatic error log
BiologyPlate 19
NeetVellum atlas · fig. biology
19
Question preview
Three examples from the live 150-question bank. Answers appear after attempting them in practice mode.
Example 1 · difficulty 1/5
Rosie, the first transgenic cow, was genetically engineered to produce milk that is nutritionally more balanced for human babies than natural cow milk. Which human protein did her milk contain?
- A. Human insulin
- B. Human alpha-lactalbumin
- C. Human growth hormone
- D. Human serum albumin
Example 2 · difficulty 2/5
The Bt toxin produced by Bacillus thuringiensis is harmless to most organisms and remains inactive until ingested by the target insect. Why does the toxin become lethal only inside the insect's body?
- A. The acidic pH of the insect's stomach converts the protoxin into its active form
- B. Spores of B. thuringiensis germinate in the gut and release live bacteria that kill the insect
- C. The alkaline pH of the insect's gut dissolves the crystals and gut proteases convert the inactive protoxin into active toxin
- D. Sunlight activates the protoxin on the plant surface before the insect feeds
Example 3 · difficulty 2/5
In the first approved clinical gene therapy trial (1990) performed on a four-year-old girl suffering from adenosine deaminase (ADA) deficiency, lymphocytes collected from her blood were grown in culture and a functional ADA cDNA was introduced into them using:
- A. A retroviral vector
- B. The Ti plasmid of Agrobacterium tumefaciens
- C. Direct microinjection of naked DNA
- D. Calcium chloride-mediated transformation
The chapter mastery loop
- 1. Attempt firstExpose recall gaps before rereading.
- 2. Classify the missConcept, careless, rushed or guessed.
- 3. Re-practiceReturn until the error pattern disappears.
Frequently asked questions
How many Biotechnology and its Applications NEET questions are available?
NeetVellum publishes 150 verified questions for this chapter. Free accounts use the daily UG quota; UG Pro removes it.
How should I revise Biotechnology and its Applications for NEET?
Attempt questions before rereading, classify each miss, revisit the exposed NCERT concept, then re-practice until the error pattern disappears.