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if cells did not move we would have a very short life and would be weak

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Answer 3:

No life would be possible without mitosis. Cell theory tells us that all living things are made of cells and that all cells come from other cells. How does one cell become two cells? By dividing. But the cell can't divide into 2 living cells unless it copies its DNA, then divides the DNA evenly into the two halves that are about to become two cells. The division of the DNA into the "daughter cells" is mitosis.

A fertilized egg cell can only turn into the trillions of cells in a human by doing an awful lot of cell division. Even after we finish growing, we need cell division to replace the cells that we constantly lose from our skin, digestive tract, and other places. We also need new cells to repair tissues, fight disease, and make reproductive cells.

The main reason we age is that our cells don't divide as much as they did when we were young, so aging gives you an idea about what happens when there is less mitosis.

Some types of cells in our bodies do very little mitosis after we're born. Can you figure out which ones?

Cell biologists and geneticists are very interested in questions like these. You may want to consider a career in one of these fields.

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Answer 3: No life would be possible without mitosis. Cell theory tells us that all living things are made of cells and that all cells come from other cells. How does one cell become two cells? By dividing.

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The cell has to attach itself to a surface and then use it front to push to exerct the force.  Most cells are locked to their neighbors because it allows cells to move.

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Phys.org - News and Articles on Science and Technology

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Phys.org internet news portal provides the latest news on science including: Physics, Space Science, Earth Science, Health and Medicine

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The different way cells move are , they can float through water or liquids.  Push themselves using long thin proteins.  Some even crawl using a thing called snowbound movements.

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The body has to be moving for the cells to move.  Some cell movement is from chemical or physical signals.

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Cell movement is a necessary function in organisms. Without the ability to move, cells could not grow and divide or migrate to areas where they are needed. The cytoskeleton is the component of the cell that makes cell movement possible. This network of fibers is spread throughout the cell's cytoplasm and holds organelles in their proper place. Cytoskeleton fibers also move cells from one location to another in a fashion that resembles crawling.

Cell motility is accomplished through the activity of cytoskeleton fibers. These fibers include microtubules, microfilaments or actin filaments and intermediate filaments. Microtubules are hollow rod-shaped fibers that help support and shape cells. Actin filaments are solid rods that are essential for movement and muscle contraction. Intermediate filaments help stabilize microtubules and microfilaments by keeping them in place. During cell movement, the cytoskeleton disassembles and re-assembles actin filaments and microtubules. The energy required to produce movement comes from adenosine triphosphate (ATP). ATP is a high energy molecule produced in cellular respiration.

Cell adhesion molecules on cell surfaces hold cells in place to prevent undirected migration. Adhesion molecules hold cells to other cells, cells to the extracellular matrix (ECM) and the ECM to the cytoskeleton. The extracellular matrix is a network of proteins, carbohydrates and fluids that surround cells. The ECM helps to position cells in tissues, transport communication signals between cells and reposition cells during cell migration. Cell movement is prompted by chemical or physical signals that are detected by proteins found on cell membranes. Once these signals are detected and received, the cell begins to move. There are three phases to cell movement.

In the first phase, the cell detaches from the extracellular matrix at its foremost position and extends forward.

In the second phase, the detached portion of the cell moves forward and re-attaches at a new forward position. The rear portion of the cell also detaches from the extracellular matrix.

In the third phase, the cell is pulled forward to a new position by the motor protein myosin. Myosin utilizes the energy derived from ATP to move along actin filaments, causing cytoskeleton fibers to slide along one another. This action causes the entire cell to move forward.

The cell moves in the direction of the detected signal. If the cell is responding to a chemical signal, it will move in the direction of the highest concentration of signal molecules. This type of movement is known as chemotaxis.

Not all cell movement involves the repositioning of a cell from one place to another. Movement also occurs within cells. Vesicle transportation, organelle migration, and chromosome movement during mitosis are examples of types of internal cell movement.

Vesicle transportation involves the movement of molecules and other substances into and out of a cell. These substances are enclosed within vesicles for transportation. Endocytosis, pinocytosis, and exocytosis are examples of vesicle transportation processes. In phagocytosis, a type of endocytosis, foreign substances and unwanted material are engulfed and destroyed by white blood cells. The targeted matter, such as a bacterium, is internalized, enclosed within a vesicle, and degraded by enzymes.

Organelle migration and chromosome movement occur during cell division. This movement ensures that each replicated cell receives the appropriate complement of chromosomes and organelles. Intracellular movement is made possible by motor proteins, which travel along cytoskeleton fibers. As the motor proteins move along microtubules, they carry organelles and vesicles with them.

Some cells possess cellular appendage-like protrusions called cilia and flagella. These cell structures are formed from specialized groupings of microtubules that slide against one another allowing them to move and bend. Compared to flagella, cilia are much shorter and more numerous. Cilia move in a wave-like motion. Flagella are longer and have more of a whip-like movement. Cilia and flagella are found in both plant cells and animal cells.

Sperm cells are examples of body cells with a single flagellum. The flagellum propels the sperm cell toward the female oocyte for fertilization. Cilia are found within areas of the body such as the lungs and respiratory system, parts of the digestive tract, as well as in the female reproductive tract. Cilia extend from the epithelium lining the lumen of these body system tracts. These hair-like threads move in a sweeping motion to direct the flow of cells or debris. For example, cilia in the respiratory tract help to propel mucus, pollen, dust, and other substances away from the lungs.

Lodish H, Berk A, Zipursky SL, et al. Molecular Cell Biology. 4th edition. New York: W. H. Freeman; 2000. Chapter 18, Cell Motility and Shape I: Microfilaments. Available from: http://www.ncbi.nlm.nih.gov/books/NBK21530/

Ananthakrishnan R, Ehrlicher A. The Forces Behind Cell Movement. Int J Biol Sci 2007; 3(5):303-317. doi:10.7150/ijbs.3.303. Available from http://www.ijbs.com/v03p0303.htm

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Cell movement is a necessary function in organisms. Without the ability to move, cells could not grow and divide or migrate to areas where they are needed. The cytoskeleton is the component of the cell that makes cell movement possible. This network of fibers is spread throughout the cell's cytoplasm and holds organelles in their proper place.