2019 source guide · Biology

NEET 2019 Biology Biotechnology Questions

Use this page to connect the official 2019 paper with current Biology practice. NeetVellum does not claim a chapter appeared in that paper until the official question and final key have been mapped.

Practice 220 verified questions →Check official NTA archive ↗

What to master

recombinant-DNA tools, processes and medical, agricultural and environmental applications.

Original practice preview

These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.

Example 1 · difficulty 1/5

In a polymerase chain reaction cycle, the step performed at approximately 72 °C, during which Taq DNA polymerase synthesises new DNA strands complementary to the template, is known as:

A. Denaturation
B. Primer extension
C. Annealing
D. Ligation

Example 2 · difficulty 3/5

In plasmid pBR322, the recognition site for BamHI lies within the tetracycline resistance gene (tetR). E. coli cells transformed with recombinant pBR322 carrying a foreign insert at this BamHI site are plated. Which observation correctly identifies the recombinant colonies?

A. They grow on medium containing ampicillin as well as on medium containing tetracycline.
B. They fail to grow on ampicillin-containing medium but grow on tetracycline-containing medium.
C. They fail to grow on both ampicillin- and tetracycline-containing media.
D. They grow on ampicillin-containing medium but fail to grow on tetracycline-containing medium.

Example 3 · difficulty 2/5

Four DNA fragments of sizes 600 bp, 1500 bp, 3000 bp and 5000 bp are loaded together in one well of an agarose gel and electrophoresis is run. Which fragment will travel the greatest distance from the well?

A. 600 bp
B. 1500 bp
C. 3000 bp
D. 5000 bp

The evidence-first practice loop

1. Verify provenanceOfficial paper and final key before accepting a PYQ label.
2. Attempt closed-bookExpose the concept or execution gap before rereading.
3. Repair and returnClassify the miss and re-practice after a delay.

Canonical chapter practice

Biotechnology: Principles and Processes →Biotechnology and its Applications →

Frequently asked questions

Are these official NEET 2019 Biology Biotechnology PYQs?

No. The previews are original NeetVellum practice questions. A historical item receives a PYQ label only after its official paper and authoritative final answer key are attached. Use the official archive for the source paper.

How should I use the NEET 2019 paper?

Solve the official paper under its original timing, verify against the final key, classify every miss, and then use the linked current-syllabus practice bank to repair the exposed concept.