Which of the following would you expect to have the least similar embryological development to that of humans?
A) whales
B) parrots
C) fish
D) salamanders
C
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A public health microbiologist plans to screen a particular bacterial species that was isolated from several patients in an intensive care unit to detect if any of the cells are penicillin-resistant mutants. What is the first step in conducting this experiment?
A. Set up an Ames test to see if any of the isolates are mutagenic. B. Determine whether or not wild type cells of the same bacterial species are susceptible to penicillin. C. Test the cells to see if they can grow on media to which penicillin has been added. D. Perform an antibiotic susceptibility test on the cells using antibiotics other than penicillin that are known to be effective.
The majority of kidney complications are due to ________
a. gallstones b. diabetes c. constipation d. dehydration e. urinary tract infections
____ make up the detrital food web
a. Carnivores and decomposers b. Decomposers and detritivores c. Decomposers and producers d. Herbivores and carnivores e. Producers and herbivores
The ________, first proposed by Francis Crick, summarizes the relationships between DNA, RNA, and protein
Fill in the blank(s) with correct word