A microbiologist must culture a patient's feces for intestinal pathogens. Which of the following would likely be present in selective media for analyzing this fecal specimen?
A. thioglycolic acid
B. sheep red blood cells
C. bile salts
D. peptone
E. NaCl
Answer: C
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Which of the following types of epithelia would be likely to make up the tubules of the kidney?
A. cuboidal B. squamous C. columnar and squamous D. columnar E. pseudostratified
Ecologically mud flat areas are a focal area of:
a. nutrient recycling. b. primary production. c. tertiary consumers. d. nutrient sink. e. sessile epifauna.
Fungal hyphae in which two genetically distinct kinds of nuclei occur together are said to be ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following is the BEST description of evolution as currently understood by modern biologists?
a) Evolution is goal directed. b) Evolution is influenced by the differential survival and reproduction of phenotypes. c) Evolution includes the results of selection for acquired characteristics. d) Evolution is synonymous with the process of mutation. e) Evolution is synonymous with the process of gene flow.