What are Cry proteins? Name an organism that produces it. How has man exploited this protein to his

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10.Biotechnology and its Application

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What are Cry proteins? Name an organism that produces it. How has man exploited this protein to his benefit?

Option A

Option B

Option C

Option D

Solution

Cry proteins are encoded by cry genes. These proteins are toxins, which are produced by Bacillus thuringiensis bacteria. This bacterium contains these proteins in their inactive from. When the inactive toxin protein is ingested by the insect, it gets activated by the alkaline $\mathrm{pH}$ of the gut. This results in the lysis of epithelial cell and eventually the death of the insect. Therefore, man has exploited this protein to develop certain transgenic crops with insect resistance such as $Bt$ cotton, $Bt$ corn, etc.

Standard 12

Biology

Consumption of which one of the following foods can prevent the kind of blindness associated with vitamin$-A$ deficiency?

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How is biotechnology useful for increasing food production in agriculture.

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Gene expression can be controlled with the help of $\rm {RNA}$ . Explain the method with an example.

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$A$ : $RNAi$ takes place in all eukaryotic organisms as a method of cellular defense.

$R $ : Complementary $dsRNA$ molecule binds to specific $mRNA$ and prevents its translation (silencing).

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$A$ – A crop expressing a cry gene is usually resistant to a group of insects.

$R$ – Cry proteins produced from Bacillusthuringiensis is toxic to larvae of Certain insects.

medium

What are Cry proteins? Name an organism that produces it. How has man exploited this protein to his benefit?

Solution

Similar Questions

Consumption of which one of the following foods can prevent the kind of blindness associated with vitamin$-A$ deficiency?

How is biotechnology useful for increasing food production in agriculture.

Gene expression can be controlled with the help of $\rm {RNA}$ . Explain the method with an example.

$A$ : $RNAi$ takes place in all eukaryotic organisms as a method of cellular defense. $R $ : Complementary $dsRNA$ molecule binds to specific $mRNA$ and prevents its translation (silencing).

$A$ – A crop expressing a cry gene is usually resistant to a group of insects. $R$ – Cry proteins produced from Bacillusthuringiensis is toxic to larvae of Certain insects.

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$A$ : $RNAi$ takes place in all eukaryotic organisms as a method of cellular defense.

$R $ : Complementary $dsRNA$ molecule binds to specific $mRNA$ and prevents its translation (silencing).

$A$ – A crop expressing a cry gene is usually resistant to a group of insects.

$R$ – Cry proteins produced from Bacillusthuringiensis is toxic to larvae of Certain insects.