NEET Biology question

The crystal (Cry) toxin protein produced by Bacillus thuringiensis exists, within the bacterium, in a biologically

(A)Active form, which kills the insect immediately on contact with the bacterium
(B)Inactive (protoxin) form, which is activated only after ingestion by a susceptible insect larvaCorrect
(C)Gaseous form, which is inhaled by the insect
(D)Liquid form that dissolves instantly in water

Answer: (B)

Solution

The Bt Cry toxin is produced and stored as an inactive protoxin within the bacterium and is converted to its active,

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Question ID VK-124334