What evolutionary advantage would there be to the formation of a pellicle in a liquid medium by a bacterium?
813098
I would think that in a liquid medium the bacterium would like to help retain form/shape,because that what a pellicle is a a thin layer supporting the cell embrane. so if a bacterium in a liquid medium not evolved an effective way to continue surviving thus thriving in its environment it might just cease to exist an evolutionary dead-end.
231344
I've never heard of any attempt of last-gasp reproduction in the animal domain. I have however heard of something similar in the bacterial domain of life. Bacteria of the genus Bacillus will sporulate under the appropriate environmental cues. These cues are usually things like low amounts of water, food, extreme shifts in temerature, etc. All these cues are ones that would probably end up in the death of the organism. The spores that are created are resistant to these harsh conditions and allow the bacteria to survive for long periods of time and can germinate if conditions return to a friendlier state.
777489
Because some bacteria produce spores as a way of encapsulating their genetic material in times of stress, and as they are dying. New, rapidly dividing cells in a new , nutrient rich, culture do not need to produce spores. As the nutrients are used up, the bacteria will begin to produce spores to conserve the genetic material. These spores will lay dormant until placed in the correct environment, and will then revive to grow into new bacteria. Some spores can survive autoclave sterilisation in this way - so its a very effective species survival strategy.
64455
mould or any microorganisms require  various  enzymes to carry out difernt unction and these enzymes work best at a perticuklar temperatour if the temperatur goeslower or above the growh is hampered and thus wen the mould is kept in fridge their enzymes dont wrk to the maximum capacity their ability to wrk gets weeker and thus the grown is also slow...... i gess u  got the reuired explanaion
141789
The obvious advantage of asexual reproduction is that you don't need other members of your species around to reproduce.  This is a really good thing if you want to go in and colonize someplace like a island, or maybe a recently-burned forest.  Or if your species isn't doing so great and there's just no one else around.\n\nFrom an evolutionary perspective, the 'goal' of an organism is to pass it's genes on to the next generation.  In sexual reproduction, each organism only gets to pass half its genes to its offspring.  In asexual reproduction, the parent gets to pass all its genes to the offspring.  That's great if the parent is perfectly adapted to its environment.  The problem is, it's the evolutionary equivalent of putting all your eggs in one basket - if something chances and the offspring are no longer well suited to the environment, chances are they'll all die instead of just a few.
404089
drift and/or sexual selection. Most likely sexual selection as the things you listed are essentially cosmetic.
33397
Nature has determined this design to be the most efficient and useful for higher order organisms.  There are two types of cell "designs", prokaryotic (bacteria) and eukaryotic (plant and animal cells).  It is thought that at one point all living things were prokaryotic, then at some point in our evolution a nuclear envelope was developed and proved to be beneficial to the organism, thereby natural selection allowed for the continuation of a nuclear envelope.  As time went by plants and animals both evolved from some ancestor of this first eukaryotic cell and henceforth have similar cell designs.  As for the actual benefits of this design, the nuclear envelope of plant and animal cells serve to protect the DNA, and therefore genes, of the animal from damage, and also serves as a type of filter seperating cellular processess in the cytosol from gene regulation in the nucleus.
262596
It is selected media for growth of different micro organisms.It is acidic in nature.You can buy it from some pharmacuitial company.(depends where r u on globe)\n(Pick ur best answer)
471254
for mobility of some bacterias that make it swim,glide or axial move or swarm. some have one flagella(monotrish)some few(lofo....)some on the polars(amphi..)and some all around them(peri...)
975038
they are evolutionary distinct!\narchae dont have a peptidoglycan cell wall.\nmoreover they live in extreme conditions such as high temp springs and very low pH!
596272
Floccinaucinihilipilification
708263
Suface Area and Transport Distance. I Strongly Suspect the Reason Prokaryotic/Eukaryotic Cells Are the Size they Are is Because of Evolutionary Optimization by Natural Selection.
399680
As the temperature of a liquid increases the particles have more kinetic energy and can move more freely so an object passing through the liquid will experience less friction.
249261
I do not specifically know names of species but spore forming bacteria do so to stand the unfavourable temeratures. The spores are very protective and can withstand a range of harsh conditions. \n\nThe difference with thermophillic bacteria (heat loving as some would say) is that these ones are dwell quite happily at high temperatues and do not need to form spores. There are some of these that live in hydrothermal vents at temperatures of greater that 70 degrees celsius and for that reason they are called extremophiles. Imagine, they can even replicate. In fact, an enzyme called Taq Polymerase is found in these bacterial species and due to its ability to work fine at high temperatures, it is used in a biotochenological procedure called Polymerase Chain Reaction (PCR) where it replicates DNA at greater that 60 degrees celsius. So the difference is the spore forming bacteria do not like high temperature and the thermophillic ones just love it!
294304
Interferes with the peptidogylcan layer of the cell wall. Causes cell to be prone to lysis. (Bursting)\n\nWhat I usually do is use google to search for relevant sites. Wikipedia is another great resource with easy to understand information. http://wikipedia.com \n\nHere are some more regarding your question\nhttp://helios.bto.ed.ac.uk/bto/microbes/penicill.htm\nhttp://www.cat.cc.md.us/courses/bio141/lecguide/unit1/prostruct/penres.html\nhttp://mic.sgmjournals.org/\nhttp://www.microbes.info/\nhttp://www.bact.wisc.edu/Microtextbook/\nhttp://www.microbiol.org/\nhttp://www.asm.org/
290325
http://www.science.siu.edu/microbiology/micr201/chapter8N.html\n\nPotential Energy!  Check it out yourself at the link above.
780599
Water equalizes the pressure between the outside and the inside of the cell wall, so it doesn't become damaged.  It also is the transport medium for nutrients coming in, and waste exiting.