Help w/ cell analogies please?
813729
plasma membrane-bouncer or security\ncell wall-Berlin Wall\nmitochondria-power plant\nER-Ups of the cell\nlysosome-decomposers\nvacuole-water and septic tank\nchloroplast-dye
445105
damn! i should know this...i'm a science chem/bio student\n\ngimme some time...they are basic and acidic in nature. so in solution, there's the [H] ions for reaction in/around cells
80863
cellular and molecular biology
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http://en.wikipedia.org/wiki/Cell_%28biology%29\n\ndoes this help any?
273317
Sounds like 1st yr HS biology homework.  Here´s a hint:\nBoth have a nucleus, DNA material, function similarly.\n\nThe rest should be in your text book, just look at the two diagrams and list the similar inner parts of the cells.\n\nOne more hint:\nHow they differ-\nPlant cells have rectangular shapes and have chloroplasts w/ chlorophyl.\n\nAnimal cells are round.
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Highlight B5 in the formula and press F4.\n\nThis will turin it into an absolute formula $B$5 and will remain fixed.\n\nThe other thing you can do is give the cell reference a name (e.g.B5VALUE) and this can be encorporated in formulaes on any worksheet.  This is an example of a named cell reference.\n\nSee source for more details.\n\nHope this helps
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Interphase\n\nhttp://www.cellsalive.com/cell_cycle.htm
636777
=(cell number+cell number) \nYou just have to click on the cell that has what you want added, subtracted or multiplied. Simple, really. And you can use more cells than that. Have fun.\nAnother formula might be \n=A(cell number+cell number)
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One way I remembered was to draw a picture and label the parts of the cell.  I would draw a new picture over and over again until I could do it without looking for help anymore.\n\nThis website is good.  It gives you the information then it tests you on it:  http://teachertech.rice.edu/Participants/dawsonm/cells/partsframw.htm
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I'd suggest you look in the front of your textbook.  It will be along the lines of "The principles of biology are. . . ."  Usually when they ask open ended questions like these they don't want a thoughtful and insightful answer like the ones given above but rather, for you to parrot the aforementioned sentence back to them.
72920
i dont understand what ur trying 2 ask but if this is the answer ur looking 4,than cells make up tissues, tissues make up organs, and organs make up organ systems.
761308
I have actually sort of answered this question already.\n\n1:10 dilution of the first step will give you 1/10th the amount of cells = 50,000 cells\n\nThe next dilution will get you 1/10th again = 5,000 cells.\n\nThanks for the 20 points... by picking the Best Answer please.
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The cell is the structural and functional unit of all living organisms, and is sometimes called the "building block of life." Some organisms, such as bacteria, are unicellular, consisting of a single cell. Other organisms, such as humans, are multicellular, (humans have an estimated 100 trillion or 1014 cells; a typical cell size is 10 µm, a typical cell mass 1 nanogram).\n\nThe cell theory, first developed in 1839 by Schleiden and Schwann, states that all organisms are composed of one or more cells; all cells come from preexisting cells; all vital functions of an organism occur within cells, and cells contain the hereditary information necessary for regulating cell functions and for transmitting information to the next generation of cells.\n\nThe word cell comes from the Latin cella, a small room. The name was chosen by Robert Hooke when he compared the cork cells he saw to the small rooms monks lived in.\n\nAll cells, whether prokaryotic or eukaryotic, have a membrane, which envelopes the cell, separates its interior from its environment, regulates what moves in and out, and maintains the electric potential of the cell. Inside the membrane, a salty cytoplasm takes up most of the cell volume. All cells possess DNA, the hereditary material of genes, and RNA, containing the information necessary to build various proteins such as enzymes, the cell's primary machinery. There are also other kinds of biomolecules in cells.
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Answer = A\n\nA larger cell (answer B) can hold more charged particles, but a small cell with 5 charged particles will have the same potential as a large cell with 5 charged particles!\n\n(C) and (D) relate to how quickly the cell can re-creat the resting membrane potential once, say, an action potential has passed through the nerve.
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Check out "mitosis" in a suitable source (Wikipedia, for example).  The process is a bit long to describe here.
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Cell division is a means of replacing worn out or dead cells.\nIf you're asking ;Why do cells divide?\nCouple of theories:\n1. Ratio of the size of the nucleus to the volume of the cytoplasm:\n    The nucleus controls the cell. When the cytoplasm gets too big   for nuclear control, the cell splits.\n2. Ratio of the volume of the cytoplasm to the surface area of the cell membrane: Materials are transported into and out of the cell through the cell membrane. If the cytoplasm gets too big, the cell membrane cannot take in enough needed materials. The cell splits, thus creating more cell membrane surface area.\nMathematically: As the radius of a spherical cell  increases from 1 to 2, the volume of the cell increases much more (I believe 8X more) than the surface.\nAdditional note: Cell division and growth are two different things.\nWhen a cell divides, you just have two cells, 1/2 the size of the original. Growth follows!
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To help elaborate in monkey terms for your reading pleasure , let me explain what these nerds just said.  Once upon a time, Mr cell and Mr. Mito (mitochondria) lived away from each other.  They both had DNA to make more of themselves, but something was wrong  Mr. Cell was having a tough time getting energy and felt weak and miserable because he wanted to grow and divide and be a super cell.  At the same time, Mr. Mito was cold and lonely and needed a place to live where he was safe and where he felt needed and important.  One day Mr Cell accidentally ate Mr mito thinking he was something else.  Mr Mito was angry, but soon came to realize that life was easier inside Mr. Cell because he was protected and could make all the energy he wanted.  Mr. Cell was so happy because he could now use the energy from Mr. Mito to grow strong and become the super cell of his dreams and out live all of the other cell.  They were both happy now and agreed to stay together forever--and they evolved happily ever after.  We will read about Mr.Ribosome and his misfit RNA issues another night.