What are the Factors affecting the rate of cell division in Saccharomyces cerivia yeast?
930110
Well, for starters, Temp is important for the catalytic effect, a low temp will slow the reaction, while too high a temp will kill the yeast.  Sugar is the food source for the yeast, so if there is not enough, the yeast wont divide as much.  Water is important of course to provide a comfortable anaerobic environment. Hope that helps you some.
129517
A typical eukaryotic cell cycle consists of several phases.1/(G1) Presynthesis gap (10hours) 2/ S-phase (DNA synthesis) 9 hours 3/ Post-synthesis gap (G2) (4 hours) and 5/ Mitosis (1 hours) (prophase-metaphase-anaphase and telophase). The whole cell cycle during cell division takes approx 24 hours but can vary between cell type and organism.
441543
2. seletive pressure can be a or c depending on wheter the pressure is the enviroment or not. \n3. meiosis is cell division leading to gametes instead of regular cells so the process is different. \n4. b
442554
Primary cultures or immortalized cells?\nI use CF3 and they grow just fine in DMEM + 10% BCS, they have contact inhibition, so you need to split them twice a week (if they become 100% confluent, they will detach from the dish).
460234
(m)\n\nCloning of Plant Cells and Manipulation of Plant Genes\nPlant cells exhibit a variety of characteristics that distinguish them from animal cells. These characteristics include the presence of a large central vacuole and a cell wall, and the absence of entioles, which play a role in mitosis, meiosis, and cell division. Along with these physical differences, another factor distinguishes plant cells from animal cells, which is of great significance to the scientist interested in biotechnology: Many varieties of full-grown adult plants can regenerate from single, modified plant cells called protoplasts - plant cells whose cell walls have been removed by enzymatic digestion. More specifically, when some species of plant cells are subjected to the removal of the cell wall by enzymatic treatment, they respond by synthesizing a new cell wall and eventually undergoing a series of cell divisions and developmental processes that result in the formation of a new adult plant. That adult plant can be said to have been cloned from a single cell of a parent plant. \nPlants that can be cloned with relative ease include carrots, tomatoes, potatoes, petunias, and cabbage, to name only a few. The capability to grow a whole plant from a single cell means that researchers can engage in the genetic manipulation of the cell, let the cell develop into a completely mature plant, and examine the whole spectrum of physical and growth effects of the genetic manipulation within a relatively short period of time. Such a process is far more straightforward than the parallel process in animal cells, which cannot be cloned into full-grown adults. Therefore, the results of any genetic manipulation are usually easier to examine in plants than in animals.
573233
Yes. You see when a paramecium reproduse by meansof fision, the resulting organism are having the same size. In the case of the yeast, a bud is much smaller.
797650
2 cell divisions\nMeiosis I and Meiosis II
768071
Yeast has the ability to enzymatically convert simple sugars into Ethyl alcohol and Carbon dioxide.\n\nNormally this is a two step process.  The first step is the aerobic budding and multiplication phase where the yeast grows in numbers.  The second is an anaerobic phase where the actual fermentation takes place.\n\nThis is true for both baker's yeast (to leaven breads) and brewer's yeast (for alcohol production).  Yeasts are single-celled (unicellular) fungi, not bacteria.
751058
with air yeast wil grow and thrive.\nwithout air it will produce ethanol and eventually die when the concentration of ethanol rises.
67715
I'll answer the questions 2, 3, and then 1.\n\nAnaerobic respiration is the process by which cells generate energy through stored oxygen. The name "anaerobic respiration" is used nearly interchangably with "fermentation," the process by which beer and wine and even bread are produced. People encounter fermentation in life when running or doing other exhaustive activity. Fermentation happens in order to provide cells with necessary energy through stored oxygen (usually from sugars such as glucose, C6H12O6). This anaerobic respiration happens when your body cannot take in as much oxygen as it is using. What happens as a result is that cells will begin to oxydize nutrients in order to produce the necessary energy. In people this actually causes the muscle cramps associated with "instant cooldown," the effect you feel if you take an endurance run and immediately sit down when finished. Your muscles often have an aching feeling if you do this, caused by lactic acid, which is a byproduct of fermentation. Cells are coded to get rid of lactic acid, and moving helps them accomplish this goal. That's why your gym teacher or fitness trainer told you to not sit down after running. Just walking around for a few minutes will keep the acid from building up. Anaerobic respiration gets its name from the absense of oxygen (anaerobic) and the transfer of oxygen (respiration). Beer, wine, and bread are produced when various organisms are used (grapes in wine, yeast in bread, and any number of organisms in beer) to produce byproducts. The grapes and beer ingredients (sometimes wheat or barley) produce CO2 and alcohol. Yeast in bread causes the bread to rise and creates those little air-pockets. Bread is then baked to sort of "kill off" the yeast that caused the bread to rise.\n\nCell division is the process by which cells multiply. Biologists use the terms "mitosis" and "meiosis" for cellular division, because they are more specific to different types of division. Mitosis is the type of cell-division that most cells undergo. Your cells are right now undergoing mitosis. There are four stages of cellular division, called Prophase, Metaphase, Anaphase, and Telophase. Its rather tedious to go through all of them one by one, so I'll give a basic description. Inside the cell there is a structure called the "nucleolus" which is like the nucleus of the nucleus of the cell. The nucleolus is like the Captain of a ship, giving the general orders to the nucleus, which delivers the messages to the cell bodies. The DNA is stored in the nucleolus. Before cell division begins, the DNA is dispersed throughout the nucleolus, and the entire structure is copied identically. When division begins, the DNA begins to coil up, and takes a visible form. Then the new copy moves to a certain area of the cell and the old copy remains. When all of the chromosomes have moved to the correct areas, the cell begins to split. The cellular membrane first dimples and then closes entirely, forming two cells. The cell in effect cloned itself, resulting in 2 new cells. All processes, other than sexual reproduction, utilize mitosis to reproduce cells. Sexual reproduction is somewhat different because of the 2-organism requisite. Depending on your sex, you may or may not have active meiosis right now (men have constant meiosis, women only experience it during puberty). In meiosis, cells first undergo mitosis, and then they split in half, containing only half of the DNA of a "normal" cell. These cells are called "haploid" cells because of their "half" nature. When sexual intercourse, or other sexual processes occur, the haploid cells from the male and the female meet to form the embryo, called the zygote when it is in this one-cell state. Sexual organisms rely on this feature to stop viruses and bacteria from destroying entire populations of a species. People, for example, owe th
828091
Replication of DNA occurs in the "S" phase (or Synthesis phase) of the cell cycle process. Usually, people perform cell cycle analysis on cells fixed at progressively differing time points. In our laboratory, we fix our cells with 70% EtOH at 0, 12, 18, 24, and 48 hours. Then we use a FACS calibur machine to visualize and quantify the percentage of cells in each phase of the cell cycle.
190192
HEAT MAKES YEAST RISE\nCOLD KEEPS IT
971455
there are various factors which affects rate of reaction. like temperature,pressure and concentration of the reactants involved. and they all have different effects
393544
two cell divisions.... one for meiosis 1 and one for meiosis 2
63689
The growth of hair and nails depends on the division of cells including DNA.  After death, cell division may continue for a relatively short time but would cease without a circulation system to supply nourishment and oxygen and to remove products of matabolism and carbon dioxide.  The short answer is that nil growth continues but takes time to stop completely.  Wierd movies may push another version unsupported by science.
880811
I don't have any picutres for you to look at, but I can give you an explanation.\nanimal cells are going to be more rounded, and plant cells are more rectangular.\nRemember: PMAT, these are the phases of mitosis\nProphase-the chromatin begins to condense into chromosomes and the nucleus begins to break down.\nMetaphase-The Chromosomes line up or Meet or "MET" at the cellular equator\nAnaphase- The chromosomes are pulled apart at the centromere\nTelophase- The chromatin decondenses and the neclues reforms\nAlso, the diff. between animal and plant cells....\nAnimal cells have a cleavage furrowl like a figure-8.\nPlant cells build a cell plate in between the separated chromosomes\nMitosis results in two daughter chromosomes.
734846
Yeast can cause some pain.