Dry heat
A) Cannot sterilize
B) Is less efficient than moist heat
C) Is used in devices called autoclaves
D) Includes tyndallization
E) Will sterilize at 121C for 15 min
B) Is less efficient than moist heat
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Fossils of Thrinaxodon, a species that lived during the Triassic period, have been found in both South Africa and Antarctica. Thrinaxodon had a reptile-like skeleton and laid eggs, but small depressions on the front of its skull suggest it had whiskers
and, therefore, fur. Thrinaxodon may have been warm-blooded. The fossils of Thrinaxodon are consistent with the hypothesis that _____. A) fossils found in a given area look like the modern species in that same area B) the environment where it lived was very warm C) mammals evolved from a reptilian ancestor D) Antarctica and South Africa separated after Thrinaxodon went extinct
The idea that species can remain unchanged for millions of years and then rapidly evolve within a short time is
A. adaptive radiation. B. convergent evolution. C. punctuated equilibrium. D. gradualism.
In a growing person, what separates the epiphysis from the bone shaft?
a. collagen b. matrix c. the epiphyseal plate d. periosteum e. osteons
When hydrogen and oxygen combine to form water, water would be
a) a product b) a reactant c) both a product and a reactant d) neither a product nor a reactant