0
What else can I help you with?
What is the most important factor in explaining why diffusion occurs spontaneously?
the process of diffusion is when molecules of any substance spread out into available space. because diffusion always occurs moving from an area of high concentration to low concentration it is said to be moving down its concentration gradient and therefore no work must be done to move the substance. Because no work is being done, diffusion decreases free energy therefore making it a spontaneous process.
How do concentration gradients work?
Concentration gradients involve the movement of particles from an area of higher concentration to an area of lower concentration. This movement occurs due to the natural tendency of particles to spread out and reach equilibrium. Diffusion is the primary mechanism involved in the movement of particles along a concentration gradient.
How does facilitated diffusion work?
Facilitated diffusion is a process where molecules move across a cell membrane with the help of transport proteins. These proteins create a channel or carrier to allow specific molecules to pass through the membrane. This movement is passive and follows the concentration gradient, meaning that molecules move from an area of high concentration to low concentration.
Which way do molecules move during active transport?
Molecules move against their concentration gradient, from an area of low concentration to high concentration, in active transport. This process requires energy input to pump the molecules across a membrane using specific proteins like pumps or carriers.
How does secondary active transport work?
Active transport requires energy (ATP, GTP, etc) to work against the electrochemical gradient. Passive transport works with the electrochemical gradient and does not require energy. (Think diffusion)
Does simple diffusion work with or against the concentration gradient?
I think that it is something
How is diffusion different from active transport?
active transport is different from diffusion. active transport has to do with the movement of chemical substance through a gradient of concentration. diffusion has to do with requiring the expenditure of energy
How can molecules move without diffusion or osmosis?
Apart from osmosis and diffusion the major mechanism for individual molecules to move is by active transport. Active transport is the movement of molecules against their concentration gradient (from a low to a high concentration) using energy supplied by the cell. It differs from diffusion which can only work down a concentration gradient ie from a high concentration to a low concentration. It also needs a source of energy supplied by a living cell, which is not needed for difusion. In cells, energy for active transport is supplied by respiration. See http://www.bbc.co.uk/schools/gcsebitesize/biology/cellprocesses/2diffusionandosmosisrev1.shtml
Does osmosis work with or against the concentration gradient?
Osmosis works with the concentration gradient, meaning that it involves the movement of water molecules from an area of low solute concentration to an area of high solute concentration in order to equalize the solute concentration on both sides of the membrane.
What is the most important factor in explaining why diffusion occurs spontaneously?
the process of diffusion is when molecules of any substance spread out into available space. because diffusion always occurs moving from an area of high concentration to low concentration it is said to be moving down its concentration gradient and therefore no work must be done to move the substance. Because no work is being done, diffusion decreases free energy therefore making it a spontaneous process.
How do concentration gradients work?
Concentration gradients involve the movement of particles from an area of higher concentration to an area of lower concentration. This movement occurs due to the natural tendency of particles to spread out and reach equilibrium. Diffusion is the primary mechanism involved in the movement of particles along a concentration gradient.
Why did whole milk move?
The whole milk moves because of diffusion.The molecules of milk diffuse thorugh the water as in simple diffusion, molecules diffueses from where it is more concentrated to where it is less concentrated to where it is less concentrated (diffusing down its concentration gradient). This leads to dynamic equilibrium; the solute molecules of mile continue to cross the membrane but at equal rates in both directions. Diffusion is a spontaneous process, needing no input of energy. No work must be done to move substances down the concentration gradient.
What types of transport moves molecules along a concentration gradient?
I'm not sure you're understanding the question you are asking. Molecules are the tiny building blocks, made up of atoms, that are used to create everything in our galaxy. Cells are a single living unit that work together to be a living thing. If you are interested in how parts of a cell move around or pass along material, you should look up how cells work or ask a more specific question.
How do faciliated diffusion and active transport differ?
In active transport, the molecules are carried against the force of diffusion. This is the opposite of facilitated transport. Also in active transport, energy in the form of ATP is required, since the molecules move against the normal flow. Note that energy is not needed in facilitated transport. Bard, Susan, Mary Alice Jost. Multimediated Lectures in Biology. Seventh Edition. Howard Community College, MD. 2003. ---------------------------------------------------------------------- *Active transport: Transport of molecules AGAINST the concentration gradient with the use of a PROTEIN CARRIER. This uses ATP. Facilitated transport: Moving of molecules through a semi permeable membrane witht he use of the cell's "facility's" AKA Protein carriers or Channels. *Gowda, Vishal. 10th Grade AP Biology Student. How about that? 2008 son!
A form of passive transport that uses transport proteins-?
Diffusion (passive transport) needs no energy to take place, and therefore no need for transport or carrier protiens. Active transport uses carrier protiens, as the cell needs to work against a concentration gradient. This requires energy. Diffusion can take place outside of cells Active transport can't take place outside of cells.
How does facilitated diffusion work?
Facilitated diffusion is a process where molecules move across a cell membrane with the help of transport proteins. These proteins create a channel or carrier to allow specific molecules to pass through the membrane. This movement is passive and follows the concentration gradient, meaning that molecules move from an area of high concentration to low concentration.
What is the function of passive transport?
Passive transport is a biological process that allows molecules to move across a cell membrane without the use of energy. It occurs down the concentration gradient, from an area of high concentration to an area of low concentration. Common types of passive transport include simple diffusion, facilitated diffusion, and osmosis.
