Exam 24: Microbes and the Environment

You have drained a pond on your property to make it deeper.In the process of using a machine to dig, you find that the mud is black and smells terrible.Your prediction is that ______ bacteria predominate in this area of the mud.

Which environment represents the largest pool of microbial genes?

There are very few viruses in aquatic environments.

The advantage of nitrogen fixation to the host plant is

The study of the practical uses of microbes in various industries and technologies is ______.

Considering the increase in tick-borne diseases in the context of "One Health," which of the following statements is correct?

The three components that interact for one health are

Both energy and nutrients cycle through an ecosystem.

Carbon dioxide (CO₂) is

Using microbes to break down or remove toxic wastes in water and soil is called ______.

Chemical elements needed in trace amounts for biochemical reactions have a biogeochemical cycle, including boron, chromium, manganese, and cobalt.

Eutrophication

When methanogens convert carbon dioxide to methane, it is a(n) ______ reaction.

Phytoplankton is composed of protozoa and small invertebrates.

Which of the following organisms anaerobically reduces sulfates to hydrogen sulfide or metal sulfide?

The conversion of nitrate (NO₃^-) to nitrogen gas (N₂) is called ______.

Methane is a significant part of the carbon cycle in ______ environments dominated by methanogens.

Scientists have learned the full extent of viral abundance on earth because

How are the sulfur cycle and the phosphate cycle interconnected?

You are preparing a garden and want to provide the best environment for your plants.Which of the following would you add to the potting soil?