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What may a glycoprotein that extends from the surface of a cell do?
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How cooking beans destroy the glycoprotein structure and function?
HIV contains Glycoprotein 120 envelope on its cluster. I think this glycoproteins may be destroyed by Enzymes. Pineaple and papaya contains enzymes.
What effect do the cells surrounding a normal cell have on the cell's growth and division?
A "normal" cell does not divide into daughter cells without taking account of its environment. If energy sources are low in a medium, it will start a signaling system to suspend or even arrest the processes of the cell cycle. And if it makes contact with other cells---determined by proteins on the cell surface which may interact (bind specifically or nonspecifically) with the surface of the other cell (or its cell surface proteins), it may send a signal to do many things. Possibilities include arresting or even initiating a cell cycle (mitosis), altering its cytoskeleton (formation/deformation of microfiilaments and microtubules) to make a better fit or increase cell motility, or even altering its basic metabolism to acquire nutrients in a different manner or from an open (apical or basal) surface. In many cells, there is an inhibition ("contact inhibition") of the cell cycle when cell surfaces contact each other, which is why in culture growth is restricted to monolayers. Not in all cases...cancer cells may form piles or multilayers of cells and not be contact-inhibited.
What is the function of the carbohydrate chain in the cell membrane?
carbohydrates are also taking part in the formation of cell membrane. it is often in the form of oligosaccharides (3- 10 sugar molecules) . it is attached to integral or peripheral proteins or to lipids forming the cell membrane. it is acting as cell marker, helps in cell - cell interaction, guiding the hormones to its receptor. it is seen only in the outer aspect of cell membrane and you cannot find it on the cytoplasmic side of cell membrane. blood group antigens are differing in their carbohydrate content. lectins are used to find out the presence of saccharides on the surface. changes in its structure is seen in cancerous cells . Malligai
A collapsed cave ceiling is called what?
Doline or Shakehole - the names given to the resulting depression if the collapse extends to the surface.Within the cave a collapse is often simply called that - "collapse", the result being a pile of boulders that may fill the passage completely, forming a boulder choke. (also boulder ruckle in the UK at least - possibly cavers' regional dialect.)
What are the size of cells limited by?
Cell size is limited by the cell membrane surface area to cell contents volume ratio. As a cell grows it eventually reaches a point where the cell membrane is unable to transport enough materials in and out at a sufficient rate to supply the needs of the cell. Cell size may also limited by space and other environmental factors.
How cooking beans destroy the glycoprotein structure and function?
HIV contains Glycoprotein 120 envelope on its cluster. I think this glycoproteins may be destroyed by Enzymes. Pineaple and papaya contains enzymes.
What is the function of Glycoproteins?
The proteins that are released in blood are glycoprotein and some glycoprotein may also carry blood group determinants. Human saliva contains the glycolipid mucin. Glycoprotein are important for immune cell recognition in mammals.Glycoproteins are secreted by animal cells and are used to form the ECM (extracellular matrix), which functions in support, adhesion, movement and regulation.
How does cell growth affect the cell's surface-to volume ratio?
The rate at which the cell increases in size depends on the DNA. The ratio of the surface area (calculated: length x width x # of sides) is divided by the cell volume (calculated: length x width x height). THE VOLUME OF THE CELL INCREASES MORE RAPIDLY THAN THE SURFACE AREA, CAUSING THE RATIO OF SURFACE AREA OVER VOLUME TO DECREASE. This decrease causes cell malfunction. If the cell volume increases too much, then the ratio will decrease causing problems for the cell's regular functions.
How does surface area to volume ration influence cell size?
Surface size directly affects the possibility for gas exchange. Volume affects how much the cell can contain. If a cell has a large volume and a small surface area, it will be able to keep in water easily. But if it needs outside gas input for its reactions, the small surface area may be a limiting factor.
Increase the membrane surface area?
You may be talking about microvilli.
What Vertebra has a forked spinous process?
Posteroinferiorly extends from the top of the vertebral arch
What is the nonliving material that makes up the cell wall?
The composition of cell walls varies significantly between species and may depend on cell type and developmental stage:Land plants, the primary cell wall is composed of the polysaccharides cellulose, hemicellulose and pectin. Often, other polymers such as lignin, suberin or cutin are anchored to or embedded in plant cell walls.Algae, the cell wall is made of glycoproteins and polysaccharides such as carrageenan and agar that are absent from land plants.Bacteria, the cell wall is composed of peptidoglycan.Archaea, the cell wall has various compositions, and may be formed of glycoprotein S-layers, pseudopeptidoglycan, or polysaccharides.Fungi, the cell wall is made of the glucosamine polymer chitin.Diatoms, unusually have a cell wall composed of biogenic silica.
A body of water that extends into land?
A body of water that extends into land may be:- a bay a Fjord an inlet an estuary
What are building appurtenances?
as a legal term, some object or surface or right of way which extends off of one building/property and (onto or over the adjacent property) and may or may not have a right of way as may be defined in an easement agreement between the properties or if not, may be grandfathered under real property law
How does surface area to volume ratio influence cell size and metabolism?
As the cell grows and increases in size,an important difference develops between the surface area available for exchange and the volume fo the cytoplasm in which the chemical reactions of life occur.The volume increases faser than the surface area;the surface area:volume ratio falls.So,with increasing size of a cell,less of the cytoplasm has access to the cell surface for exchange of gases,supply of nutrients,and loss of waste products.Put another way,we can say that the smaller the cell is,the more quickly and easily can materials be exchanged between its cytoplasm and environment.One consequence of this is that cells cannot continue growing larger,indefinitely.When a maximum size is reached,cell growth stops.The cell may be divide. the extent of chemical reactions that make up metabolism in a cell is not directly related to the surface area of the cell,but it does relate to the amount of a cytoplasm,expressed as the small mass.In summary we can say that the rate of metabolism of a cell is a function of its mass,whereas the rate of exchange of materials and heat energy that metabolism generates is a function of the cell's surface area
What effect do the cells surrounding a normal cell have on the cell's growth and division?
A "normal" cell does not divide into daughter cells without taking account of its environment. If energy sources are low in a medium, it will start a signaling system to suspend or even arrest the processes of the cell cycle. And if it makes contact with other cells---determined by proteins on the cell surface which may interact (bind specifically or nonspecifically) with the surface of the other cell (or its cell surface proteins), it may send a signal to do many things. Possibilities include arresting or even initiating a cell cycle (mitosis), altering its cytoskeleton (formation/deformation of microfiilaments and microtubules) to make a better fit or increase cell motility, or even altering its basic metabolism to acquire nutrients in a different manner or from an open (apical or basal) surface. In many cells, there is an inhibition ("contact inhibition") of the cell cycle when cell surfaces contact each other, which is why in culture growth is restricted to monolayers. Not in all cases...cancer cells may form piles or multilayers of cells and not be contact-inhibited.
Surface area is an important factor in limiting cell growth because?
http://wiki.answers.com/Q/Surface_area_is_an_important_factor_in_limiting_cell_growth_because the cell may become too large to take in enough _____food______ and remove enough ____wastes.____
