Summary: Microbiology 7
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1 Microbiology 7
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What compound has the highest concentration in a cell?
H2O -
Most of the dry weight of a microbial cell is from
Organic compounds -
An organic nutrient that cannon be synthesized by the organism and must be provided is called a/an
Growth factor -
An important mineral ion of the cytochrome pigments of cellular respiration is
Iron -
An importan mineral ion that is a component of chloroplasts and stabilizer of membranes and ribosomes is
Magnesium -
The term phototroph refers to an organism that
Gets energy from sunlight -
The term chemotroph refers to an organism that
Gets energy by oxidizing chemical compounds -
The methanogens, producers of methane gas, require environments that
Are anaerobic with hydrogen gas and CO2 -
Microorganisms that live in severe habitats, such as very hot, acidic, or salty environments are called
Extremophiles -
Organisms called ___ live on or in the body of a host and cause some degree of harm.
Pathogens
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