The taxon that is composed of similar species that have several important features in common but differ sufficiently to still maintain their status as individual species is which one of the fol-lowing?
a. Class
b. Order
c. Family
d. Genus
D
The genus is composed of similar species.
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The microtubules that form the mitotic spindle grow out from the centrosome. Where would you expect to find the plus (fast growing) end of a spindle microtubule?
A. at the centrosome B. away from the centrosome C. at the kinetochore D. Answers b and c are both correct.
Photosynthetic organisms using the oxygenreleasing
pathway appeared on earth about ____ billion years ago.
a. 1.3 b. 1.8 c. 2.3 d. 2.7 e. 3.8
A type II diabetic ____
a. requires insulin injections b. produces too much glucagon c. is usually under-weight d. is insulin resistant e. is usually hypoglycemic
The location on a bacterial chromosome where DNA replication begins is ________, and the binding of ________ opens up the double helix
a. oriC / DnaA b. oriC / DNA gyrase c. oriG / DnaA d. oriG / DNA gyrase