Low-input agriculture is an excellent example of _____________
A. industrial agriculture
B. organic agriculture
C. biomimicry
D. All of the above are correct.
E. None of the above are correct.
Answer: E. None of the above are correct.
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A team of researchers has developed a poison that has proven effective against lamprey larvae in freshwater cultures. The poison is ingested and causes paralysis by detaching segmental muscles from the skeletal elements
The team wants to test the poison's effectiveness in streams feeding Lake Michigan, but one critic worries about potential effects on lancelets, which are similar to lampreys in many ways. Why is this concern misplaced? A) A chemical poisonous to lampreys could not also be toxic to organisms as ancestral as lancelets. B) Lamprey larvae and lancelets have very different feeding mechanisms. C) Lancelets do not have segmental muscles. D) Lancelets live only in saltwater environments. E) Lancelets and lamprey larvae eat different kinds of food.
Which of the following is a novel antimicrobial target?
A) disruption of lipid biosynthesis B) inhibition of protein synthesis C) inhibition of cell wall biosynthesis D) inhibition of peptidoglycan crosslinking
Which of the following is the binding site for
RNA polymerase on the DNA molecule? a. structural gene 1 b. repressor gene c. promoter sequence d. operator sequence e. region between an operator and the first structural gene
What term denotes the range of all factors that influence whether a species can obtain resources
essential for survival and reproduction? a. habitat b. niche c. carrying capacity d. ecosystem e. community