Bacillus thuringiensis forms protein crystals which
contain insecticidal protein. This protein
(a) binds with epithelial cells of midgut of the insect
pest ultimately killing it
(b) is coded by several genes including the gene cry
(c) is activated by acid pH of the foregut of the
insect pest
(d) does not kill the carrier bacterium which is itself
resistant to this toxin.
contain insecticidal protein. This protein
(a) binds with epithelial cells of midgut of the insect
pest ultimately killing it
(b) is coded by several genes including the gene cry
(c) is activated by acid pH of the foregut of the
insect pest
(d) does not kill the carrier bacterium which is itself
resistant to this toxin.