Genetically modified organisms (GMOs are those whose genes have been altered, has led to increased agricultural production For example, Bt Brinjal, Golden rice and Tracy.
KCET - 2012
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347671
Identify the wrong statements in relation to transgenic Bt cotton plant?
1 The use of chemical insecticides in the cotton field is minimised.
2 Better quality of cotton is produced.
3 Crop yield loss due to attack by Bacillus thuringiensis bacterium is reduced.
4 Crop yield loss due to attack by lepidopteron insect pests is reduced.
Explanation:
Bacillus thuringiensis is a bacterium from which specific genes were isolated & incorporated into plants to get insect resistance.
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347672
What triggers activation of protoxin to active \(\mathrm{Bt}\) toxin of Bacillus thuringiensis in boll worm?
1 Body temperature
2 Moist surface of midgut
3 Alkaline \(\mathrm{pH}\) of gut
4 Acidic \(\mathrm{pH}\) of stomach
Explanation:
Bacillus thuringiensis forms protein crystals during a particular phase of their growth. These crystals contain a toxic insecticidal protein. These protein exist as inactive protoxins but once an insect ingest the inactive toxin, it is converted into an active form of toxin due to alkaline \(\mathrm{pH}\) of the gut which solubilize the crystals. The activated toxin binds to the surface of midgut epithelial cells and create pores that cause cell swelling and lysis and eventually cause death of insect.
NEET - 2018
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347673
The choice of genes of Bacillus thuringiensis which is to be incorporated into crop depends upon
1 Crop
2 Targeted pest
3 Toxin
4 Both (1) and (2)
Explanation:
The choice of genes depends upon the crop and the targeted pest, as most Bt toxins are insect-group specific.
Genetically modified organisms (GMOs are those whose genes have been altered, has led to increased agricultural production For example, Bt Brinjal, Golden rice and Tracy.
KCET - 2012
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347671
Identify the wrong statements in relation to transgenic Bt cotton plant?
1 The use of chemical insecticides in the cotton field is minimised.
2 Better quality of cotton is produced.
3 Crop yield loss due to attack by Bacillus thuringiensis bacterium is reduced.
4 Crop yield loss due to attack by lepidopteron insect pests is reduced.
Explanation:
Bacillus thuringiensis is a bacterium from which specific genes were isolated & incorporated into plants to get insect resistance.
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347672
What triggers activation of protoxin to active \(\mathrm{Bt}\) toxin of Bacillus thuringiensis in boll worm?
1 Body temperature
2 Moist surface of midgut
3 Alkaline \(\mathrm{pH}\) of gut
4 Acidic \(\mathrm{pH}\) of stomach
Explanation:
Bacillus thuringiensis forms protein crystals during a particular phase of their growth. These crystals contain a toxic insecticidal protein. These protein exist as inactive protoxins but once an insect ingest the inactive toxin, it is converted into an active form of toxin due to alkaline \(\mathrm{pH}\) of the gut which solubilize the crystals. The activated toxin binds to the surface of midgut epithelial cells and create pores that cause cell swelling and lysis and eventually cause death of insect.
NEET - 2018
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347673
The choice of genes of Bacillus thuringiensis which is to be incorporated into crop depends upon
1 Crop
2 Targeted pest
3 Toxin
4 Both (1) and (2)
Explanation:
The choice of genes depends upon the crop and the targeted pest, as most Bt toxins are insect-group specific.
Genetically modified organisms (GMOs are those whose genes have been altered, has led to increased agricultural production For example, Bt Brinjal, Golden rice and Tracy.
KCET - 2012
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347671
Identify the wrong statements in relation to transgenic Bt cotton plant?
1 The use of chemical insecticides in the cotton field is minimised.
2 Better quality of cotton is produced.
3 Crop yield loss due to attack by Bacillus thuringiensis bacterium is reduced.
4 Crop yield loss due to attack by lepidopteron insect pests is reduced.
Explanation:
Bacillus thuringiensis is a bacterium from which specific genes were isolated & incorporated into plants to get insect resistance.
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347672
What triggers activation of protoxin to active \(\mathrm{Bt}\) toxin of Bacillus thuringiensis in boll worm?
1 Body temperature
2 Moist surface of midgut
3 Alkaline \(\mathrm{pH}\) of gut
4 Acidic \(\mathrm{pH}\) of stomach
Explanation:
Bacillus thuringiensis forms protein crystals during a particular phase of their growth. These crystals contain a toxic insecticidal protein. These protein exist as inactive protoxins but once an insect ingest the inactive toxin, it is converted into an active form of toxin due to alkaline \(\mathrm{pH}\) of the gut which solubilize the crystals. The activated toxin binds to the surface of midgut epithelial cells and create pores that cause cell swelling and lysis and eventually cause death of insect.
NEET - 2018
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347673
The choice of genes of Bacillus thuringiensis which is to be incorporated into crop depends upon
1 Crop
2 Targeted pest
3 Toxin
4 Both (1) and (2)
Explanation:
The choice of genes depends upon the crop and the targeted pest, as most Bt toxins are insect-group specific.
Genetically modified organisms (GMOs are those whose genes have been altered, has led to increased agricultural production For example, Bt Brinjal, Golden rice and Tracy.
KCET - 2012
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347671
Identify the wrong statements in relation to transgenic Bt cotton plant?
1 The use of chemical insecticides in the cotton field is minimised.
2 Better quality of cotton is produced.
3 Crop yield loss due to attack by Bacillus thuringiensis bacterium is reduced.
4 Crop yield loss due to attack by lepidopteron insect pests is reduced.
Explanation:
Bacillus thuringiensis is a bacterium from which specific genes were isolated & incorporated into plants to get insect resistance.
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347672
What triggers activation of protoxin to active \(\mathrm{Bt}\) toxin of Bacillus thuringiensis in boll worm?
1 Body temperature
2 Moist surface of midgut
3 Alkaline \(\mathrm{pH}\) of gut
4 Acidic \(\mathrm{pH}\) of stomach
Explanation:
Bacillus thuringiensis forms protein crystals during a particular phase of their growth. These crystals contain a toxic insecticidal protein. These protein exist as inactive protoxins but once an insect ingest the inactive toxin, it is converted into an active form of toxin due to alkaline \(\mathrm{pH}\) of the gut which solubilize the crystals. The activated toxin binds to the surface of midgut epithelial cells and create pores that cause cell swelling and lysis and eventually cause death of insect.
NEET - 2018
BIOXII12: BIOTECHNOLOGY AND ITS APPLICATIONS
347673
The choice of genes of Bacillus thuringiensis which is to be incorporated into crop depends upon
1 Crop
2 Targeted pest
3 Toxin
4 Both (1) and (2)
Explanation:
The choice of genes depends upon the crop and the targeted pest, as most Bt toxins are insect-group specific.
