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The formal system for classifying and naming micro-organisms was developed by __________.

____________________ the hypothesis that living cells arise only from preexisting living cells.

Which microscope is used to see internal structures of cells in a natural state (unstained) ?

In the aerobic metabolism of glucose, ________ acts as the final electron acceptor.

All of the following are characteristics of viruses EXCEPT ______________

The mechanism whereby an enveloped virus leaves a host cell without killing the host cell is called _______________.

For a particular disease at a specific time period, morbidity rates should always be equal or greater than mortality rates.

Once an enzyme has converted substrates into products, the active site reverts back to its original form.

A latent infection is one in which _______________.

Synthesis of a repressible enzyme is stopped by the _______________.