List of top Biology Questions on Biotechnology asked in NEET (UG)

Which of the following statements is incorrect?

The “Ti plasmid” of Agrobacterium tumefaciens stands for

Match List-I with List-II:

List-I	List-II
A. Abscisic acid	I. Promotes female flowers in cucumber
B. Ethylene	II. Helps seeds to withstand desiccation
C. Gibberellin	III. Helps in nutrient mobilisation
D. Cytokinin	IV. Promotes bolting in beet, cabbage etc

Choose the correct answer from the options given below:

Match List-I with List-II:

List-I	List-II
A. ETS Complex I	I. NADH Dehydrogenase
B. ETS Complex II	IV. Succinate Dehydrogenase
C. ETS Complex III	II. Cytochrome bc1
D. ETS Complex IV	III. Cytochrome C oxidase

Choose the correct answer from the options given below:

The Bt toxin in genetically engineered Bt cotton kills the pest by:

Following are the steps involved in action of toxin in Bt. Cotton
A. The inactive toxin converted into active form due to alkaline pH of gut of insect.
B. Bacillus thuringiensis produce crystals with toxic insecticidal proteins.
C. The alkaline pH solubilises the crystals.
D. The activated toxin binds to the surface of midgut cells, creates pores and causes death of the insect.
E. The toxin proteins exist as inactive protoxins in bacteria.
Choose the correct sequence of steps from the options given below:

Select the restriction endonuclease enzymes whose restriction sites are present for the tetracycline resistance (tet^R) gene in the pBR322 cloning vector

A gene whose expression helps to identify transformed cell is known as

Which of the following Bt crops is being grown in India by the farmers?

Restriction endonuclease:

In transgenics expression of transgene in target tissue is determined by

The Ti plasmid is often used for making transgenic plants. This plasmid is found in

The technique of obtaining large number of plantlets by tissue culture method is called

A mutant strain of T4 – Bacteriophage, R-II, fails to lyse the E-Coli but when two strains RIIX and R-IIY are mixed then they lyse th E.Coli. What may be the possible reason

Reason of diversity in living being

Which of the following cut the DNA from specific places

What is true for plasmid