Selective media can _____ or ____ growth, while differential media helps with ______ .
Fill in the blank(s) with the appropriate word(s).
encourage or inhibit, identification.
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Select the three most common shapes of bacteria. Select all that apply
A) bacillus B) coccus C) spirillum D) cuboid
In comparing all three major muscle types, which one of the following statements best describes the differences between them?
A) Cardiac muscle can be stimulated only by nerves, whereas smooth and skeletal muscle contract spontaneously. B) Smooth and skeletal muscles appear striated, due to the arrangement of muscle filaments, whereas cardiac muscles lack these filaments. C) Only cardiac muscle is under voluntary control. D) Smooth and cardiac muscle do not fatigue, whereas skeletal does fatigue. E) Gap junctions are present in skeletal muscles, but not in other types of muscle.
What is the best way to describe our current understanding of the one-gene/one-polypeptide hypothesis?
A. It applies to prokaryotes but not to eukaryotes. B. It applies to eukaryotes but not to prokaryotes. C. It has been replaced by the one-gene/one-enzyme hypothesis. D. It applies to both prokaryotes and eukaryotes.
Hormones differ from other chemical messengers such as neurotransmitters in that hormones:
A) travel through the bloodstream. B) are all in the lipid chemical family. C) always suppress rather than stimulate a response. D) are released through ducts. E) cross a synapse.