Which of these would a paleontologist most likely do to determine if a fossil represents a reptile or a mammal?
A) Look for the presence of milk-producing glands.
B) Look for the mammalian characteristics of a four-chambered heart and a diaphragm.
C) Use molecular analysis to look for the protein keratin.
D) Examine the teeth.
D
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The transport medium that best preserves the viability of most intestinal bacterial pathogens is:
a. buffered glycerol. b. rectal culture swab. c. Cary-Blair. d. Campylobacter thioglycollate broth.
Early microscopes did not allow clear visualization of cells because they were limited by
A) magnification. B) number of kernels. C) resolution. D) refraction. E) both magnification and resolution.
The ability to meet humanity's current needs without compromising the ability of future generations to meet their needsis:a
environmental sustainability. b. species richness. c. biosphere diversity. d. resource conservation. e. habitat regeneration.
The electrons derived from the oxidation of NADPH to NADP+ are used to reduce _______ to ________.
Fill in the blank(s) with the appropriate word(s).