How will E. coli appear if the mordant is not applied?
A. colorless
B. gram-variable
C. gram-positive
D. gram-negative
Answer: D
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____________________ is spread by droplets produced when an infected person sneezes or coughs
Fill in the blank(s) with correct word
Tetherin is an important protein produced by the host. What is the function of tetherin in protecting a host cell from HIV?
A) ties maturing virions to the membrane of the host cell, thereby preventing the release of the mature virus B) binds the virus to the external host cell membrane, thereby preventing the virus from entering the host cell C) binds the viral RNA to reverse transcriptase, thus preventing synthesis of the viral DNA D) binds the two viral RNA strands together, thus preventing the transcription of viral DNA in the host cell E) causes the maturing virions to aggregate together, thus preventing their release from the host cell
For each animal cell that begins oogenesis, the number of ova produced is four
__________________ Indicate whether the statement is true or false.
Microorgansisms called psychrophiles will grow only at low temperatures (at or near 0°C). This restriction on a microbes growth would most directly impact
A) Information gathering B) Incubation C) Isolation D) Identification E) Inspection F) Inoculation