Which cycle involves materials moving through a series of transfers from living to nonliving systems and then back again?
A) biogeochemical
B) geological
C) uranium-lead
D) continental
A
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In what way is cytokinesis in plant cells similar to binary fission in a bacterium?
A. Cell wall material is deposited between the two nuclei to separate the daughter cells. B. A ring of actin filaments constricts the plasma membrane between the two nuclei to separate the daughter cells. C. A microtubulin-like structure constricts the plasma membrane between the two nuclei to separate the daughter cells. D. A motor protein slides microtubules in a contractile ring at the plasma membrane between the two nuclei to separate the daughter cells. E. All of these choices are correct.
Compare the functions of meiosis I and II in the overall generation of gametes
What will be an ideal response?
The bipolar spindle is composed of __________. Fill in the blank(s) with the appropriate word(s)
The emergence of a new plant species over a brief period of time followed by a long period of little change is consistent with which of the following theories?
A) the gradual model of speciation B) allopatric speciation C) punctuated equilibrium D) adaptive radiation