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One factor that influence the passage of substances through living membranes are size which small molecules pass faster than large. Others are the charge non polar are faster and concentration gradient molecules that move to regions of lower concentration.
Steepness of the concentration gradient. The higher the temperature the faster the rate of diffusion. The mass of the diffusing substance. The larger the membrane surface available the faster the diffusion rate. The greater the distance over which diffusion must occur, the longer it takes.
The main factor that influences diffusion of a substance across a cell membrane is the concentration of the diffusing molecule. If it is high on one side and low on another it will diffuse to the area of lower concentration. Another factor that influences diffusion across a cell membrane would be the pore. Is the molecule large enough to fit through the pores of the membrane? Does the molecule have the correct charge with regards to the charge on the inside of the pore to allow it to pass through?
There are many factors that affect the diffusion of a dissolved substance through a membrane. Temperature is one of these factors.
The diffusion of different substances through a membrane depends on the size of the particles of the substance. The smaller the particles, the higher the rate of diffusion.
size: small molecules pass faster than bigger ones
polarity: a non polar molecule diffuses faster
concentration gradient: molecules move to regions of lower concentrations
Molecule size (smaller is quicker), temperature, polarity (nonpolar molecules diffuse faster)
Size: small molecules pass faster than bigger ones
Polarity: a non polar molecule diffuses faster
Concentration gradient: molecules move to regions of lower concentrations
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A material that will not permit the passage of electricity is called what?
It is an insulator.
What is passage of gas through the anus is?
first thats gay
What is the transition word after after that?
There is no way to answer this without more information. A transition word is a word used to connect two parts of a passage or quotation, so to complete your question you need to supply the passage or quotation.
What is the second step when evaluating writing with a general rubric?
Read the passage
What Did Sir John Franklin Discover?
Hes discovered the north west passage
Do some membranes have proteins with chanels that allow for the passage of hydrophilic substances?
Yes, some membranes have protein channels called aquaporins that allow for the passage of hydrophilic substances like water across the membrane. These channels facilitate the movement of water molecules while excluding other substances.
Do cheetahs have cell walls or membranes?
Cheetahs do not have cell walls. However, like all living organisms, they have cell membranes that surround and protect their cells. Cell membranes regulate the passage of substances in and out of the cell.
Is this true some membranes have proteins with channels or pores that allow for passage of hydrophilic substances?
yes it's true.
What do you call a thin solids that allow certain substances to diffuse through them?
Semi-permeable membranes are thin solids that allow certain substances to diffuse through them while preventing the passage of others.
What supervises substances entering and exiting the cell?
The cell membrane supervises the substances entering and exiting the cell. It is selectively permeable and regulates the passage of molecules in and out of the cell through active or passive transport mechanisms.
Do prokaryotic cells have cell membranes?
Yes, prokaryotic cells have cell membranes. The cell membrane surrounds the entire cell and separates its internal environment from the external environment. It regulates the passage of substances in and out of the cell.
What type of tissue is so thin it is considered primarily with the movement of various substances across the membranes from one body compartment to another?
Epithelial tissue is the type of tissue that is thin and primarily concerned with the movement of substances across membranes. It forms the lining of various organs and cavities in the body, allowing for the selective passage of molecules and ions.
Do all cells have cell membranes?
Yes, the cells of archaebacteria, bacteria, protists, fungi, plants and animals all have cell membranes. (Viruses have protein coats, not cell membranes and thus are not true 'cells'.) Thus indeed, all cells possess a cell membrane.
What are the functions that cell membranes perform?
Cell membranes perform several key functions, including acting as a barrier to regulate the passage of substances in and out of the cell, providing structural support to the cell, facilitating cell communication and signaling, and recognizing and binding to specific molecules like hormones or antigens.
Passage of water through cell membranes?
Osmosis
The compounds in biological membranes that form a barrier to the movement of hydrophilic materials across the membranes are?
phospholipids and cholesterol are the main compounds that form the barrier to the movement of hydrophilic materials across biological membranes. The hydrophobic tails of the phospholipids create a barrier that prevents the passage of hydrophilic substances. Cholesterol helps maintain the fluidity and stability of the membrane.
What factors control passage of molecules in and out of cell?
The main factors that control the passage of molecules in and out of a cell are the size of the molecules, their charge, the concentration gradient, and the presence of specific transport proteins or channels. Cell membranes are selectively permeable, allowing some molecules to pass freely while requiring others to be actively transported.
