Bacillus thuringiensis forms a protein which | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) Bacillus thuringiensis $(Bt)$ produces insecticidal crystal proteins (Cry proteins) during a particular phase of their growth. These proteins exis

Vedclass · Accepted Answer

Binds with epithelial cells of the midgut of the insect pest,ultimately killing it.

Vedclass · Answer

(A) Bacillus thuringiensis $(Bt)$ produces insecticidal crystal proteins (Cry proteins) during a particular phase of their growth. These proteins exist as inactive protoxins in the bacterium. When an insect ingests the inactive toxin,it is converted into an active form due to the alkaline $pH$ of the gut,which solubilizes the crystals. The activated toxin binds to the surface of midgut epithelial cells and creates pores that cause cell swelling and lysis,eventually leading to the death of the insect. Therefore,option $A$ is correct.

Column-$I$	Column-$II$
$(a)$ $Bacillus \text{ } thuringiensis$	$(1)$ $Nematode$
$(b)$ $Meloidogyne \text{ } incognitia$	$(2)$ $Cry \text{ } protein$
$(c)$ $Agrobacterium$	$(3)$ $Genetically \text{ } engineered \text{ } insulin$
$(d)$ $E. \text{ } coli$	$(4)$ $Ti \text{ } plasmid$

Bacillus thuringiensis forms a protein which is insecticidal. This protein:

Similar Questions

$Bt-$ cotton is resistant to:

The toxic $Cry$ protein is released by the spores of . . . . . . which kills the larvae of butterflies feeding on plants like $Brassica$.

Anand Chakrabarty has used biotechnology for

$A$: Production of hirudin from transgenic $Brassica$ required the use of a synthetic gene.
$R$: Eukaryotic genes have intron sequences that need to be spliced out.

Vedclass Test Series

Exam Paper Generator

Online Exam Module