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Why would endospores not be present in a 12 hour batch culture but would be present in 14 day batch culture?
Endospores only form under unfavorable conditions that threaten the survival of the bacteria (and only some bacteria are capable of producing endospores). Also, the process of endospore formation requires 8-10 hours. Assumably, the 12 hour culture would still have an abundant supply of nutrients and therefore would not require the production of endospores to survive; the 14 day culture would have a much higher number of organisms which had been using up the supply of nutrients, therefore creating unfavorable conditions and requiring the formation of endospores for survival.
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.
How does a carrot root enable the plant to survive unfavorable conditions?
A tuber stores plenty of food material along with propagules in the form of buds and remains dormant under unfavorable conditions.
What four features of bacteria that enable them to survive in a wide variety of habitats?
The four features of bacteria that enable them to survive in a wide variety of habitats are: The primary feature of the bacteria is their ability to develop a cyst, which protects them from unfavorable environmental conditions. For instance, the prokaryotic organism has a cell wall, which helps them to survive in hypertonic and hypotonic conditions. Also, the bacteria form endospores that help the bacteria to resist extreme hot temperatures. The bacteria synthesize cold shock proteins, which help to survive in low temperatures. There are many features that make bacteria survive in harsh conditions. Bacteria are found almost everywhere. There are various types of features found in bacteria. These adaptation helps them to survive in extreme conditions.
Small rounded thick-walled resting cell?
I believe that you are referring to a bacterial endospore. Only a small number of bacteria can produce these (Gram-positive Firmicutes). Endospores are very tough and allow the bacteria that can produce them to survive high temperatures, pressures, drought, etc.
Do bacteria form endospores to survive unfavorable conditions in their surrounddings?
Yes, they form Terminal, elliptical endospores.
Bacterial structures which could survive unfavorable conditions are called?
endospores
What can Bacteria form to survive when envioromental conditions are severe?
When growing conditions are not right, many bacteria form
How bacteria can survive harsh conditions?
With the help of endospores, or thick-walled structures that help the bacteria survive harsh conditions.
Bacteria can survive extended periods of very harsh conditions by forming?
Endospores
What is the term for the protective wall that helps bacteria survive unfavourable conditions?
endospores
How can some strains of bacteria like anthrax survive in harsh unfavorable conditions?
they do survive when the environment is wet
Some bacteria can survive extended periods of very harsh conditions by forming?
endospores. Endospores are dormant structures with thick protective layers that allow bacteria to withstand extreme temperatures, desiccation, and exposure to chemicals and radiation. When conditions become more favorable, endospores can germinate and the bacteria can resume their normal metabolic activities.
Why would endospores not be present in a 12 hour batch culture but would be present in 14 day batch culture?
Endospores only form under unfavorable conditions that threaten the survival of the bacteria (and only some bacteria are capable of producing endospores). Also, the process of endospore formation requires 8-10 hours. Assumably, the 12 hour culture would still have an abundant supply of nutrients and therefore would not require the production of endospores to survive; the 14 day culture would have a much higher number of organisms which had been using up the supply of nutrients, therefore creating unfavorable conditions and requiring the formation of endospores for survival.
What does a endospore to to a bacterium?
Endospores allow bacteria to survive in hostile conditions where growth would be impossible such as desication or extreams of heat.
Resistant cell that can survive harsh conditions?
endospores
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.
