The identification of an unknown bacterial isolate is based on (Check all that apply)
a. Gram stain morphology
b. number of bacteria
c. source of the bacteria
d. results of standard biochemical tests
e. preexisting morphological and biochemical data collected for a large number of previously identified bacterial species
Ans:
a. Gram stain morphology
d. results of standard biochemical tests
e. preexisting morphological and biochemical data collected for a large number of previously identified bacterial species
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Carbon dioxide is a pollutant because it
a. is absorbed by the ocean and converted into insoluble carbonates. b. is utilized when fossil fuel is burned. c. is a waste product of photosynthesis. d. cannot be recycled at a rate equal to its present production. e. is replacing oxygen as the most abundant gas in the air
In a polymer of nucleotides, how does one nucleotide attach to another?
a. The base of one nucleotide is attached to the base of the next. b. The base of one nucleotide it attached to the sugar of the next. c. The sugar of one nucleotide is attached to the sugar of the next. d. The phosphate group of one nucleotide is attached to the base of the next. e. The phosphate group of one nucleotide is attached to the sugar of the next.
Although the cells of a multicellular organism are specialized for certain functions, those cells must also be integrated and organized in order to work together to benefit the organism
Indicate whether the statement is true or false
Polar microtubules
a. overlap in the center of the spindle. b. are attached to the contractile ring. c. are attached to kinetochores. d. pull kinetochores poleward.