Fermentation is sometimes used as a means of slowing food-spoilage.  Why would fermentation lead to this outcome?

The microbes that normally live on the skin, in the alimentary tract (colon), and in other sites in humans are:

When a virus “carries” a new piece of DNA and incorporates it into a cell, this is known as

Organisms may derive energy from

A scientist discovers a new microbial species. It is a single-celled prokaryote organism with peptidoglycan in its cell walls. Where will it likely be classified?

When microbes in close nutritional relationship and one benefits but the other is not harmed nor helped, it is called

Which of the following is a repressible operon?

Each of the following are true of enzymes except:

Each new fission cycle (generation time) increases the population by

   The toxic oxygen-containing molecules from cellular reactions is converted to harmless oxygen by two enzymes: