Which of the following is used to sterilize items that should not, or cannot, be exposed to heat or water?
A) ethylene oxide
B) formaldehyde
C) hydrogen peroxide
D) calcium hypochlorite
E) triclosan
A
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You examine an animal and find that it an excretory tubule with a closed proximal end immersed in hemolymph and a
distal end that empties into the gut. You correctly identify this tubule as a ____.
a. nephron b. hepatic tubule c. metanephridium d. Malpighian tubule e. protonephridium
Differential survival and reproduction of individuals of a population that vary in the details of shared
traits is called __________. Fill in the blank(s) with the appropriate word(s).
The emergence of many diverse species from a common ancestor is called
A) adaptive radiation. B) gradualism. C) allopatric speciation. D) hybridization.
In which organ does the maturation of T cells take place
a) spleen b) lymph node c) red bone marrow d) thymus e) pancreas