1-Bt-corn and Bt-cotton are plants that produce their own pesticides. That is, t

Question

1-Bt-corn and Bt-cotton are plants that produce their own pesticides. That is, they have been given genes that encode for the production of toxins that kill insects. These genes came originally from the bacterium called Bacillus thuringiensis (thus the
root of the Bt abbreviation). Which statement is TRUE?
a. Bt-corn and Bt-cotton are GMOs.
b. In this case, Bacillus thuringiensis is genetically modified.
c. Bacillus thuringiensis is being used as a bioremediant in this case.
d. This is an example of gene therapy.
e. all of the above

2. Which statement is FALSE?
a. Today, despite the eradication of many infectious diseases we must fight newly
emerging diseases, the resurgence of old diseases and microorganisms that are
becoming resistant to current treatment techniques. Many chronic diseases
such as peptic ulcers are being shown to be caused by bacteria. Likewise,
science is discovering that many types of cancer are caused by viruses.
b. Disease-causing microorganisms are called pathogens.
c. In 1906 infectious diseases such as tuberculosis and diarrheal diseases (e.g.
cholera) were among the leading causes of death.
d. Most microorganisms are not pathogenic. In fact, they cover our body surfaces
and line our intestinal tract. These bacteria are normal flora and they protect us
by competing with pathogenic microorganisms.
e. None of the above

Explanation / Answer

1 - A By the nature of having genes inserted into their chromosome, that automatically makes them GMOs (Genetically modified organisms). However, to insert a gene into a plant from a bacteria, no modification to the bacteria has to occur, therefore B is false thus making E false. 2 - E All of those statements are true.

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