All known members of which fungal phylum form mutualistic associations with plant roots?
a. Glomeromycota
b. Basidiomycota
c. Chytridiomycota
d. Zygomycota
e. Ascomycota
A
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If a lung were to be found in a mollusc, where would it be located?
A) mantle cavity B) coelom C) incurrent siphon D) visceral mass E) excurrent siphon
What kind of enzyme is the RAS gene product, the Ras protein?
a) a phosphodiesterase b) a GTPase c) a kinase d) an ATPase e) a phosphatase
X-ray crystallography has revealed and confirmed many details about the ribosome. All of the following are such details, EXCEPT ________
A) the ribosome is a dynamic structure that changes during its different functional states B) rRNAs are more likely than proteins to be the catalytic molecule of the ribosome C) the distance the tRNA must travel between the E, P, and A sites is considered to be relatively short D) rRNA in the ribosome is in direct contact with the different loops of the tRNA molecule E) the wobble hypothesis is further supported
The process by which the major land masses have shifted their positions, changed shapes, and separated from each other, is known as
A. differential land movement. B. cotranslational sorting. C. depolarization of land masses. D. continental drift. E. cyclic land drift.