The natural habitat of Acinetobacter sp. can best be described as the:
a. mucous membranes of animals.
b. gastrointestinal tract of humans and other animals.
c. natural environment.
d. genitourinary tract of animals.
C
These organisms inhabit environmental niches; Acinetobacter spp. and Stenotrophomonas mal-tophilia are widely distributed in nature and in hospital environments.
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A challenge to traditional (pre-1860) ideas about species came from embryology, where it was discovered that __________.
A. mutations have a far more dramatic effect on embryos than on adult organisms B. all animals develop similar embryonic gills C. the more advanced the animal, the more slowly it develops D. embryos of dissimilar organisms, such as sharks and humans, resemble each other
You suspect a region of DNA contains a promoter and wish to confirm that a sequence of interest binds proteins. Which experiment would you use?
A) in situ hybridization B) band shift assay C) pulse-chase assay D) Southern blotting E) northern blotting
If you exposed a C4 plant to 14CO2 in the light, which would be the first organic molecule labeled with 14C?
A. oxaloacetate B. malate C. phosphoenolpyruvate (PEP) D. pyruvate
In the reaction A ? B + C + heat
A) there is a net input of energy. B) the potential energy of the products is greater than that of the reactant. C) the potential energy of the products is less than that of the reactant. D) entropy has decreased.