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What are some Possible reasons why higher concentrations of colistin and nalidixic acid was less effective at allowing growth of gram-positive organisms?
Wiki User
∙ 12y ago
agar will lose it's ability to show difference between hemolysis
Wiki User
∙ 12y ago
Higher concentrations of colistin and nalidixic acid may have caused increased cell membrane disruption in gram-positive organisms, leading to cell lysis and death. Additionally, the mechanism of action of these antibiotics may be specific to gram-negative bacteria, making them less effective against gram-positive organisms at higher concentrations. Resistance mechanisms in gram-positive organisms may also play a role in reducing the effectiveness of these antibiotics at higher concentrations.
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What is the difference between haloduric and halophilic organisms?
Halophilic organisms like being, and grow, better on places with high concentrations of salt while haloduric organisms can stay on places with high concentrations of salt but they won't grow (reproduce)...the just survive.
What happens to the micro-organisms in sugar or salt?
When micro-organisms come into contact with high concentrations of sugar or salt, the osmotic balance is disrupted, causing water to leave the cells through osmosis. This can lead to dehydration and ultimately cell death, making sugar and salt effective at inhibiting the growth of microorganisms.
What are chemophiles?
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What element is abundant to soil and is an effective poison?
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What organisms does phytonmining?
Plants are the organisms used for phytomining. If plants can absorbs the low concentrations of metals in soil, the metals can be concentrated in the biomass of the plants and then extracted from the plant material when harvested.
What is the difference between haloduric and halophilic organisms?
Halophilic organisms like being, and grow, better on places with high concentrations of salt while haloduric organisms can stay on places with high concentrations of salt but they won't grow (reproduce)...the just survive.
What happens to the micro-organisms in sugar or salt?
When micro-organisms come into contact with high concentrations of sugar or salt, the osmotic balance is disrupted, causing water to leave the cells through osmosis. This can lead to dehydration and ultimately cell death, making sugar and salt effective at inhibiting the growth of microorganisms.
What is the process concentrations of harmful substances increase in organisms at higher tropic levels in a food chain known as?
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What are chemophiles?
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It is possible in multicellular but not effective .
What do you call microbes that can not survive except in the presence of high concentrations of salt?
You think probable to organisms called halophile.
What element is abundant to soil and is an effective poison?
Arsenic is an element that is naturally abundant in soil and can be toxic to humans and other organisms in high concentrations. It is commonly found in ores and minerals in the Earth's crust and can leach into soil from natural sources or human activities such as mining or agriculture.
What organisms does phytonmining?
Plants are the organisms used for phytomining. If plants can absorbs the low concentrations of metals in soil, the metals can be concentrated in the biomass of the plants and then extracted from the plant material when harvested.
What controls the concentrations of organic matter in soils?
Soil micro-organisms control the concentration of organic matter in the soil. Thus, fertile soils are full of soil humus and micro-organisms.
How effective was bolling on each organism why?
It was completely ineffective. Organisms do not boll.
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