Who, among the following, was the earliest
naturalist?
a. Darwin
b. Plato
c. Mendel
d. Galileo
e. Aristotle
E
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Which of the following are least likely to play a role in the nitrogen cycle?
A) indigenous microflora B) nitrifying and denitrifying bacteria C) nitrogen-fixing bacteria D) bacteria living in the root nodules of legumes
Eusocial insects _____
a. live in extended family groups b. include termites, honeybees, and ants c. show a reproductive division of labor d. all of these
The outer layer of the uterus that forms an external cover for the organ is the _____.
A. endometrium B. myometrium C. exometrium D. perimetrium
Disadvantages of continuous cell cultures include
A) they only grow for a limited number of generations. B) the expense of preparation. C) they may be significantly different genetically from the original source animal. D) viruses do not reliably infect them. E) they are both expensive and have a limited number of division.