Highly branched, bushy structures produced by AM fungi that develop within plant root cells are called
a. endophytes
b. compuscles
c. arbuscles
d. rhizomorphs
e. ectomycorrhizae
Ans: c. arbuscles
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The Lotka-Volterra models used for competition may also be used to describe the dynamics of a mutualism by replacing the competition coefficients with positive interaction coefficients
Indicate whether the statement is true or false
Viral vectors are not the only method being studied for gene therapy purposes. Which of the following is a nonviral delivery method for gene therapy?
A) DNA covered with protein B) DNA bound to the surface of liposomes C) gene pills D) electrically stimulating cells to take up DNA
A solution having a pH of 8 is slightly acidic
__________________ Indicate whether the statement is true or false.
While eating lobster for dinner one night your friend asks what you think might happen if this marine invertebrate, which is normally isosmotic with respect to the surrounding seawater, were to be moved to a bay with a slightly lower salt concentration instead of being caught. You reply that, in order for the lobster to be isosmotic with respect to new environment,
A. it regulates its internal concentration of solutes to match that of its new environment. B. it moves water in or out and regulates its internal concentration of water as needed. C. it must move water in to match the solute concentration of its new environment. D. it must move water out to match the solute concentration of its new environment.