1
NEET 2026
MCQ (Single Correct Answer)
+4
-1
Change Language

The human protein named $\boldsymbol{\alpha}$-1-antitrypsin, obtained from transgenic animals, is used for the treatment of $\_\_\_\_$ .

A

Emphysema

B

Alzheimer's disease

C

Rheumatoid arthritis

D

Cystic fibrosis

2
NEET 2026
MCQ (Single Correct Answer)
+4
-1
Change Language

The toxin proteins isolated from Bacillus thuringiensis, coded by which of the following genes would contrl cotton bollworms and corn borer, respectively?

A

cryIAc and cryIAb

B

crylAc and cryllAb

C

cryllAb and crylAc

D

cryIAc and cryIIIAb

3
NEET 2025
MCQ (Single Correct Answer)
+4
-1
Change Language

Which of the following genetically engineered organisms was used by Eli Lilly to prepare human insulin?

A
Virus
B
Phage
C
Bacterium
D
Yeast
4
NEET 2024 (Re-Examination)
MCQ (Single Correct Answer)
+4
-1
Change Language

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:

A
$$\mathrm{E} \rightarrow \mathrm{C} \rightarrow \mathrm{B} \rightarrow \mathrm{A} \rightarrow \mathrm{D}$$
B
$$\mathrm{B} \rightarrow \mathrm{C} \rightarrow \mathrm{A} \rightarrow \mathrm{E} \rightarrow \mathrm{D}$$
C
$$\mathrm{A} \rightarrow \mathrm{E} \rightarrow \mathrm{B} \rightarrow \mathrm{D} \rightarrow \mathrm{C}$$
D
$$\mathrm{B} \rightarrow \mathrm{E} \rightarrow \mathrm{C} \rightarrow \mathrm{A} \rightarrow \mathrm{D}$$

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