Mannitol salt agar is selective for organisms in which bacterial genus?
A. Staphylococcus
B. Neisseria
C. Escherichia
D. Salmonella
E. Streptococcus
Answer: A
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The structure in the above figure demonstrates which of the following?
a. transcription and translation occur simultaneously on a single strand b. ribosomes attached to a strand of DNA c. a small ribosomal subunit d. multiple ribosomes on a strand of mRNA e. a single unattached ribosome
The dead brown spots on these leaves
are sites where a pathogen invaded and triggered the defensive destruction of surrounding cells. This is an example of which type of defense?
1.activation of heat-shock proteins 2.increased production of terpenes 3.systemic acquired resistance 4.the hypersensitive responseThe type of muscle responsible for involuntary contractions of the stomach is ________ muscle
A) smooth B) cardiac C) intercalated D) striated E) skeletal
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a. poor embryonic development b. temporal isolation c. mechanical isolation d. gametic isolation