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Which fungus is common in the microbiota of a healthy individual?

Which of the following does a virus lack?  Select all that apply.

A non-enveloped virus is termed

Mercury toxicity is a very recent concern in dentistry. To date, no scientific evidence shows that dental amalgam is harmful to the patient or to dental personnel.

Match each organelle with its best description.

When petri dishes are poured, the media is liquid.  Why does the media become a solid before you can inoculate?

Sterilization of the inoculation loop helps prevent contamination. 

Which of the following infectious agents do not have nucleic acids?

For “bonding” restorations to tooth structure, a roughened enamel surface is created by _____ with _____.

Which scientist finally and definitively disproved the theory of spontaneous generation?