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20 Cards in this Set
- Front
- Back
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Most microbes live either under ? or ? conditions when we are talking about osmotic pressure
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hypotonic
isotonic |
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? live in a habitat with a high solute concentration(hypertonic solution)
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Osmophiles
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? prefer high concentrations of salt
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Halophiles
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? halophiles grow optimally in solutions of 25% NaCl but require at least 9% NaCl for growth
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Obligate
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Nonphotosynthetic microbes tend to be damaged by the ? oxygen products
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toxic
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Some ? microbes produce yellow carotenoid pigments to protect against the damaging effects of light by absorbing and dismantling toxic ?
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nonphotosynthetic
O2 |
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Types of radiation that can damage microbes are ? and ? rays
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ultraviolet
ionizing |
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Deep sea microbes that exist under hydrostatic pressures ranging from a few times to over 1,000 times the pressure of the atmosphere are called
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Barophiles
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Most microbes live in ? habitats
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shared
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A general term used to denote a situation in which two organisms live together in a close partnership is ?
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symbiosis
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There are 3 main types of symbiosis, ?,? and ?
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mutualism
commensalism parasitism |
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When organisms live in an obligatory but mutually beneficial relationship +/+ it is called
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mutualism
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In ? the member receives benefits, while its coinhabitant is neither harmed nor benefited +/o
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commensalism
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When one organism is using byproducts created by the other for nutrition or for protection it is ? o/+
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satelitism
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A relationship in which the host organism provides the microbe with nutrients and a habitat is ? -/+
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parasitism
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When organism are free living and relationships are not required for survival it is a ? relationship
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nonsymbiotic
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An inter-relationship between 2 or more free living organisms that benefits both but is not needed is ?
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synergism
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An association between free-living species that arises when members of a community compete is ?
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Antagonism
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When one microbe secretes chemical substances called ? into the environment they inhibit or destroy another microbe in the same habitat
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bacteriocins- a.k.a - antibiotics
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Interrelationships between microbes and humans can be ?, ?, and ? relationships.
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commensal, parasitic, and synergistic
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