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Discuss the ways bacteria and archaea adjust the lipid content of their membranes in response to environmental conditions?
Wiki User
∙ 11y ago
the lipid bilayer membrane properties that enable membranes to function at high temperatures. It is concluded that no single, chemically stable lipid by itself was responsible for the adaptation of surviving at high temperatures. Lipid membranes that function effectively require the two properties of a high permeability barrier and a liquid crystalline state. Archaeal membranes realize these two properties throughout the whole biological temperature range by means of their isoprenoid chains. Bacterial membranes meet these requirements only at or just above the phase-transition temperature, and therefore their fatty acid composition must be elaborately regulated. A recent hypothesis sketched a scenario of the evolution of lipids in which the "lipid divide" emerged concomitantly with the differentiation of archaea and bacteria. The two modes of thermal adaptation were established concurrently with the "lipid divide."
Wiki User
∙ 11y ago
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If a scientist wanted to study cell response under varying environmental conditions what laboratory technique would be appropriate to use?
Cell Fractionation
Living things adjust to stimulus by a reaction called?
In order for life to survive, bodies or cells must adjust to environmental conditions. This is called _____.
How is an adaptation different from a response to a stimulus?
Generally speaking, an adaptation is a response to a stimulus just one that develops over long periods of time. Usually a stimulus caused an immediate response such as with blinking or sneezing. Adaptations like polar bears having black skin are, however, in response to a stimulus; environmental conditions.
Why does an endospore form?
a bacterial cell will form (essentially morph into) an endospore when its environment changes. If the cell has adapted to survive in warm, moist conditions with an abundance of proteins and then if these conditions the bacterial cell has adapted to are changed, conditions aren't warm or moist then as a survival mechanism it will essentially morph into an endospore. Then when conditions change back to the cells original ideal conditions, tiny chemoreceptors on the endospore will activate genes in the cell to morph back into its normal form.
Explain why the ability to rapidly degrade mRNA can be an adaptive advantage for prokaryotes?
Prokaryotic mRNA molecules are degraded by enzymes after only a few minutes . Thus bacteria can quickly alter patterns of protein synthesis in response to environmental changes.
What does it mean when you say an organism is pleomorphic?
is the ability of some bacteria to alter their shape or size in response to environmental conditions
What are three environmental conditions amoeba sp respond to and what are their response?
seven
Dormnat structures in bacteria formed in response to adverse conditions?
Endospores
If a scientist wanted to study cell response under varying environmental conditions what laboratory technique would be appropriate to use?
Cell Fractionation
What is an effect of adaptation?
Speciation Adaptive radiation refers to changes in a species in response to varying environmental conditions. many new species form
Living things adjust to stimulus by a reaction called?
In order for life to survive, bodies or cells must adjust to environmental conditions. This is called _____.
How is an adaptation different from a response to a stimulus?
Generally speaking, an adaptation is a response to a stimulus just one that develops over long periods of time. Usually a stimulus caused an immediate response such as with blinking or sneezing. Adaptations like polar bears having black skin are, however, in response to a stimulus; environmental conditions.
An individual's response to environmental stressors is?
Stress
What are the two most important antimicrobial proteins?
The two most important antimicrobial proteins are defensins and cathelicidins. Defensins are small cationic peptides that can bind to and disrupt the cell membranes of bacteria, fungi, and viruses. Cathelicidins are also cationic peptides that can kill microbes by disrupting their cell membranes and by modulating the immune response.
Why does an endospore form?
a bacterial cell will form (essentially morph into) an endospore when its environment changes. If the cell has adapted to survive in warm, moist conditions with an abundance of proteins and then if these conditions the bacterial cell has adapted to are changed, conditions aren't warm or moist then as a survival mechanism it will essentially morph into an endospore. Then when conditions change back to the cells original ideal conditions, tiny chemoreceptors on the endospore will activate genes in the cell to morph back into its normal form.
Specific immunological response?
adaptive immune response
What is a specific response?
destruction of bacteria by lysozme
