HORTICULTURE SCIENCE
GENERAL AGRICULTURE
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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protein
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carbohydrate
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fats
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nucleic acids
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Detailed explanation-1: -Crystal (Cry) proteins made by the bacterium Bacillus thuringiensis (Bt) are pore-forming toxins that specifically target invertebrates (insects and nematodes) and are generally innocuous to mammals. They are widely used as insecticides in agriculture and to control parasitic nematodes.
Detailed explanation-2: -Bacillus thuringiensis (Bt) is a Gram positive, spore-forming bacterium that synthesizes parasporal crystalline inclusions containing Cry and Cyt proteins, some of which are toxic against a wide range of insect orders, nematodes and human-cancer cells.
Detailed explanation-3: -Bt crystals, sometimes referred to as insecticidal crystal proteins (ICP), are protein crystals formed during sporulation in some Bt strains. Bt produces proteins that aggregate to form a crystal.
Detailed explanation-4: -Bacillus thuringiensis (Bt) crystal proteins are pore-forming toxins used as insecticides around the world. Previously, the extent to which these proteins might also target the invertebrate phylum Nematoda has been mostly ignored.