Use of genetically modified crop plants may be crucial to feeding the world's growing population. Discuss this statement with regard to BT toxin production in modified crop plants
What will be an ideal response?
Crop plants producing Bt toxin require the application of far less chemical pesticide than unmodified crops. This in turn reduces the cost of producing the crop, reduces the possibility of pesticide contamination of the food, and reduces contamination of the environment with pesticides. Killing the insects feeding on the plant reduces crop damage and increases the crop yield, making the crop more economical to produce. Further, only the insects actually eating the crop plants are affected by the Bt toxin.
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Which statement is true regarding the pathogenesis of N. cinerea?
a. N. cinerea is a leading cause of fatal bac-terial meningitis. b. Virulence factors include pili, capsule formation, and endotoxin. c. Disseminated intravascular coagulation (DIC) and thrombocytopenia are compli-cations of infection. d. N. cinerea is commonly encountered as a contaminant in clinical specimens.
A mutant soybean plant that is unable to produce leghemoglobin will most likely suffer from ____ deficiency
a. phosphorus b. magnesium c. potassium d. oxygen e. nitrogen
While ________ are involved in bone deposition, ________ are involved in the breakdown of bone tissue
Fill in the blank(s) with correct word
One of her colleagues suggested she try increased methylation of C nucleotides in the DNA of promoters of a mammalian system. Which of the following results would she most likely see?
A) decreased chromatin condensation B) activation of histone tails for enzymatic function C) higher levels of transcription of certain genes D) inactivation of the selected genes