Cultures of a bacterial species were incubated on the shelf of a refrigerator, out on a lab bench top, on the shelf of a 37⁰ C incubator, and on the shelf of a 50⁰ C incubator. After incubation, there was no growth at 37⁰ C and 50⁰ C, slight growth out on the bench top and abundant growth at refrigeration. What term could be used for this species?

FAD++, NADP+, and NAD+ are all _____ carriers.

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: