Which one of the following is NOT required for transcription?
A. RNA polymerase.
B. DNA.
C. Uracil nucleotides.
D. Ribosomes.
E. All of these are needed for transcription.
D
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If the flow of energy in an arctic ecosystem goes through a simple food chain, perhaps involving humans, starting from phytoplankton to zooplankton to fish to seals to polar bears, then which of the following could be true?
A) Polar bears can provide more food for humans than seals can. B) The total biomass of the fish is lower than that of the seals. C) Seal meat probably contains the lowest concentrations of fat-soluble toxins. D) Seal populations are larger than fish populations. E) Fish can potentially provide more food for humans than seal meat.
In E. coli O157:H7, the O157:H7 refers to the
A. specific type of DNA present. B. specific genus. C. general family. D. the specific LPS and flagella type present.
Chemically or thermally modified toxins that are used for vaccination are called (adjuvants/antigens/toxoids)
What will be an ideal response?
Answer the following questions true (T) or false (F)
1. Vaginosis may be experienced without accompanying vaginitis, but vaginitis always accompanies vaginosis. 2. A vaginal swab examined under the microscope reveals the presence of clue cells. Bacterial vaginosis is likely indicated. 3. Men, rather than women, make up the majority of syphilis cases.