Exam 23: Major Microbial Habitats and Diversity

A soil that lacks a dominate particle size is referred to as a(n)

Microorganisms in the laboratory generally grow________ when compared to their growth in the environment.

Shallow marine sediments are dominated by

Which metabolic strategy is most common in chemolithotrophic mats?

Which is the CORRECT order of increasing size in soil particles?

What adaptation do organisms have that tolerate high pressures?

Mineral soils largely come from weathered limestone and sand.

From the aquatic systems below, where are heterotrophic Bacteria the MOST abundant?

Oligotrophic organisms do not grow well under nutrient replete conditions.

Carbon dioxide produced during respiration becomes dissolved in water as _________, which dissolves limestone- containing rocks.

Chemoorganotrophic bacteria can facilitate the formation of soil through the secretion of organic acids.

Microbial life has been identified at depths of 3 km despite being anoxic.

The photosynthetic pigments bacteriorhodopsin and proteorhodopsin are present in________ and________ , respectively.

An ecosystem includes both the living organisms and abiotic materials that function together.

A chemical that comes from outside the ecosystem is referred to as a(n) ________chemical.

Biomass generation due to heterotrophic organisms is called________ production.

Purple phototrophic bacteria that use bacteriochlorophyll a are oxygenic.

In many marine systems, the carbon and oxygen cycles are directly proportional to each other.

Which chlorophylls do prochlorophytes contain?

Chemical diffusion plays a major role in the availability of chemicals for microorganisms.