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What is the direction of net movement in endocytosis?
Endocytosis moves large and polar molecules, that are unable to pass through a cell's plasma membrane, from the outside of a cell to the inside of a cell. There are three types of endocytosis:Phagocytosis (cell eating)- the process by which a cell engulfs macromolecules.Pinocytosis (cell drinking)- the process by which small dissolved substances enter a cell. Small vesicles pinch off of the plasma membrane into the cell.Receptor-mediated endocytosis- the process by which a cell engulfs molecules specific to its receptor proteins. Molecules bind to specific receptor proteins in the receptor-coated pit. Basically, this type of endocytosis is the same as phagocytosis. The only difference is the molecule specificity, which is sensitive to the type of receptor proteins.See the following link for an animation of these cellular processes and exocytosis:http://bcs.whfreeman.com/thelifewire8e/content/cat_040/0504003.html
What is the opposite of phagocytosis?
The opposite of phagocytosis is exocytosis, where cells release substances out of the cell. In phagocytosis, cells engulf and internalize particles, while in exocytosis, cells expel substances from vesicles to the external environment.
What is the functions of a vesicle?
Vesicles are mainly involved in the transportation of material in/out or within the cell. They are made of at least one layer of the phospholipid-bilayer; which is the major constituent of the cell membrane. The term used for the transportion of solid material into the cell is endocytosis; when this happens the vesicle carrying the material will join to the cell membrane and become part of it, releasing its contents into the cytoplasm. Also pinocytosis is a synonym of endocytosis, which literally means cell-drinking, involves the absorption of aqueous solutes in the same process as endocytosis. Exocytosis involves transporting material out of the cell; the reverse of endocytosis, which happens in much the same way. Vesicles can also transport material within the cell. For example, vesicles transport proteins from the rough endoplasmic reticulum to the Golgi apparatus. Some veiscles serve as storage vessels, such as, the synaptic vesicle which can store neurotransmitters; these stores are regulated, or released, via a flow of calcium ions.
Why Does osmosis occur if a cell is placed in an isotonic solution?
The water molecules are at a dynamic equilibrium, which means that equal amounts of water move into and out of the cell at the same time.
Why mitotic cell division is called homotypic cell division?
Mitotic cell division is called homotypic cell division because no crossing over is occur in this division and pairing of homologous cromosome is also not occur. So caracteristics of daughter cells is same as mother cell. As there is no variation occur, so this type of cell division may called homotypic cell division.
Endocytisis and exocytosis are similar?
similar but opposite. endocytosis is the way food and packets of liquids enter a cell. theres specific names pinocytosis is the liquids entering and phagocytosis is the foods entering. exocytosis is the opposite. the stuff that the cell wants to get rid of gets crammed into a vacuole and shoved out the cell. both processes involve the cell membrane. when endocytosis takes place, the food or liquids are covered in a bit've membrane. when exocytosis, the cells 'crap' is placed in a kinda packet surrounded by the same stuff as a cell membrane. so when this packet comes in touch with the membrane, it joins it, flushing all the stuff that is in it. out.
The cell takes in food and water and eliminates wastes through the what?
Hi! There are two process that do these jobs, and they both occur at the cell membrane. Endocytosis is the take in of materials such as food into the cell. There are two types of endocytosis: Phagocytosis and Pinocytosis. Phagocytosis makes the cytoplasm of the cell extend and "surround" the food and packages it into a vacuole. Pinocytosis sets up "traps" along the cell membrane to tract and collect food. Exocytosis is the excretion of waste products out of the cell. Here is how Prentice Hall Biology described it "The membrane of the vacuole surrounding the material fuses with the cell membrane, forcing the contents out of the cell." This is like a counter part of endocytosis, the process by which cells take in materials from outside the cell. Good Luck
What does it mean if the membrane structure of the final vesicle formed during exocytosis of the cell?
The cell membrane and vesicle have to be made of the same parts so that the process can be completed.
What is the direction of net movement in endocytosis?
Endocytosis moves large and polar molecules, that are unable to pass through a cell's plasma membrane, from the outside of a cell to the inside of a cell. There are three types of endocytosis:Phagocytosis (cell eating)- the process by which a cell engulfs macromolecules.Pinocytosis (cell drinking)- the process by which small dissolved substances enter a cell. Small vesicles pinch off of the plasma membrane into the cell.Receptor-mediated endocytosis- the process by which a cell engulfs molecules specific to its receptor proteins. Molecules bind to specific receptor proteins in the receptor-coated pit. Basically, this type of endocytosis is the same as phagocytosis. The only difference is the molecule specificity, which is sensitive to the type of receptor proteins.See the following link for an animation of these cellular processes and exocytosis:http://bcs.whfreeman.com/thelifewire8e/content/cat_040/0504003.html
What is the opposite of phagocytosis?
The opposite of phagocytosis is exocytosis, where cells release substances out of the cell. In phagocytosis, cells engulf and internalize particles, while in exocytosis, cells expel substances from vesicles to the external environment.
What is the functions of a vesicle?
Vesicles are mainly involved in the transportation of material in/out or within the cell. They are made of at least one layer of the phospholipid-bilayer; which is the major constituent of the cell membrane. The term used for the transportion of solid material into the cell is endocytosis; when this happens the vesicle carrying the material will join to the cell membrane and become part of it, releasing its contents into the cytoplasm. Also pinocytosis is a synonym of endocytosis, which literally means cell-drinking, involves the absorption of aqueous solutes in the same process as endocytosis. Exocytosis involves transporting material out of the cell; the reverse of endocytosis, which happens in much the same way. Vesicles can also transport material within the cell. For example, vesicles transport proteins from the rough endoplasmic reticulum to the Golgi apparatus. Some veiscles serve as storage vessels, such as, the synaptic vesicle which can store neurotransmitters; these stores are regulated, or released, via a flow of calcium ions.
Are the cells the same and why?
The DNA of cells in the same organism will be the same if no mutations occur. The only diffferences from your hair cells to your muscle cells is the structure of the cell. The structure of a cell gives the cell it's function.
Golgi what and what proteins for export out of the cell?
Vacoules because they exporting unwanted substances from the cell. And Vesicle, Secretory transport endoplasmic reticulum products to the golgi. I am working the same worksheet rightnow.
What method do most cells use in order to dispose of large molecules of waste materials?
This is called homeostasis. This is essentially the cell trying to keep the conditions inside the same at all times. On occasion, this means that the cell needs to get rid of some of the waste products that it creates. The cell has many ways to dispose of cellular waste. The ways a cell uses to remove waste are: Definition of Cellular Waste Lysosomes Ubiquitin Scavengers Secretion
What the same as cell drinking?
pinocytic
When osmosis do not occur?
Osmosis does not occur when the concentration of solute is the same on both sides of the membrane, creating an isotonic environment where there is no net movement of water molecules. Additionally, osmosis may not occur if the membrane is impermeable to water molecules, preventing their movement across the membrane.
Why Does osmosis occur if a cell is placed in an isotonic solution?
The water molecules are at a dynamic equilibrium, which means that equal amounts of water move into and out of the cell at the same time.
