Which organism was responsible for the Irish Potato Famine?
A. Tobacco mosaic virus
B. Phytophthora infestans
C. Sclerotinia sclerotiorum
D. Botrytis cinerea
Answer: B
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One of the concerns with the use of genetically-engineered, herbicide-resistant crops is _________
A. decreased yields D. loss of genetic diversity B. potential allergic reactions E. the expense of using herbicides C. transfer of herbicide resistance to weeds
In the three domain system of classification,
A. eukaryotes are more similar to the prokaryotes now classified into domain Bacteria than to those now classified into domain Archaea. B. animals and plants are less similar to each other than to the prokaryotes now classified into domain Archaea. C. prokaryotes are classified into two domains, with the organisms in domain Archaea more similar to eukaryotes than to the prokaryotes in the domain Bacteria. D. cladistics alone were used to formulate the new phylogenetic tree of life. E. by the principle of parsimony, it required fewer assumptions to divide the prokaryotes into two domains than it did to put them into a single domain.
Certain plants have been genetically modified to secrete citrate, which helps
A. make hydroponic growth possible. B. plants make necessary micronutrients. C. make the phosphate in soils more soluble. D. reveal mineral deficiencies in a plant. E. plants add metals to the soil in which they are growing.
Unlike G-series agents, VX is:
A) not classified as a nerve agent, although its effects are similar to those produced by nerve agents. B) less lethal and persistent and is easily removed from the skin through decontamination. C) has a fruity odor, is significantly less lethal than sarin, and contains components that are easy to acquire. D) so persistent that, given the proper conditions, it will remain relatively unchanged for weeks to months.