Exam 23: Microorganisms in the Environment and Effects on Human Health

Specific small niches in which populations and guilds within a community reside are referred to as

All of the following are free-living nitrogen-fixing bacteria except

Match the description below with the correct item from this list. -Quantity of all organisms in an ecosystem

Eutrophication is a term used in the

EPA stands for __________.

Which of the following processes is most commonly used in wastewater treatment?

The process by which nitrate is reduced to nitrogen is called

The conversion of CO₂ to organic molecules is called __________.

The most abundant microbe population in soil consists of

A set of guilds is referred to as a

Match the description below with the correct item from this list. -Overgrowth of microbes in nutrient-rich waters

Which of the following zones is present only in oceans?

The majority of marine microorganisms are present in the

Which of the following is not found in the atmosphere?

Viral hemorrhagic fevers (VHFs)are caused by four families of __________ viruses.

Match the description below with the correct item from this list. -Sulfur dissimilation

The process by which amino groups are converted to ammonia is referred to as __________.

The bacterial genus Rhizobium is involved primarily in the __________ cycle.

Match the description below with the correct item from this list. -Number of species living in a given ecosystem

The physical location where organisms are found is called a(n)__________.