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Would you expect osmosis and diffusion to the stop when substances are evenly distributed?
Yes, osmosis and diffusion would theoretically slow down and eventually stop when substances are evenly distributed. This is because there would be no concentration gradient, which is necessary for osmosis and diffusion to occur.
How is facilitated diffusion different than normal diffusion?
Diffusion is the movement of molecules or partocles from an area of high concentration to an area of lower concentration, and Facilitated diffusion is when substances difuse across cell membranes more rapidly than you might expect.
What function would you expect of a tissue that contracts forcibly when stimulated?
Movement
Will changing sucrose concentrations change the mass of the potato?
Yes, through a process called osmosis. Osmosis is the diffusion of water across a cellular membrane. Water flows from high concentrations to low concentrations. The mass of the potato will change based on the molarity of the solution it is placed in. CHEMISTRY REFRESHER: molarity is the amount of moles of a substance per liter(of water). If the potato is placed in a solution with a lesser molarity than itself(the solution has less glucose than the potato) then we would expect for the potato to gain water. This is because there is a greater concentration of water outside of the cell wall, so water enters the cell in order to obtain equilibrium. Using the same reasoning we would expect for the potato to lose water if it is placed in a solution of higher molarity
How do small molecules pass through the cell membrane?
There are three types of transport for molecules across the cell membrane. 1 - Diffusion - Molecules move from an area of high concentration to an area of low concentration 2 - Osmosis - same idea as diffusion, but refers to the movement of WATER across a selectively permeable membrane. How can you change water concentration? Add a solute. If you have 2 250 ml beakers, connected and divided by a selectively permeable membrane, and one beaker contains a salt solution, the salt solution is "hypotonic" (hypo- less, tonic - water) to the water filled beaker. One will see a migration of water into the salt solution beaker. BOTH diffusion and osmosis rely on concentration gradients to perform their jobs. They always want "equilibrium" between both sides of the membrane. 3 - Active transport - Proteins embedded in the cell membrane move large molecules through the cell membrane or AGAINST the concentration gradient. The size one is obvious; If it's really big, it won't permeate the membrane. As for the concentration gradient, this means that it moves a molecule INTO the area with and already HIGHER concentration. If this happens with say... H+ molecules, it creates a potential difference - ie - Voltage across the membrane. Cellular respiration counts on this process to create ATP/Energy for the cell.
Would you expect osmosis and diffusion to the stop when substances are evenly distributed?
Yes, osmosis and diffusion would theoretically slow down and eventually stop when substances are evenly distributed. This is because there would be no concentration gradient, which is necessary for osmosis and diffusion to occur.
How is facilitated diffusion different than normal diffusion?
Diffusion is the movement of molecules or partocles from an area of high concentration to an area of lower concentration, and Facilitated diffusion is when substances difuse across cell membranes more rapidly than you might expect.
What would you expect if two models were compared in a diffusion test?
The rate of diffusion would be faster for the right cylinder.
What results would you expect if these two models were compared in a diffusion?
The rate of diffusion would be faster for the right cylinder.
What result would you expect if these two models were compared in a diffusion test?
If the two models were compared in a diffusion test, you would expect to see differences in how well they diffuse a substance. The model with higher diffusion capabilities would show a faster and wider spread of the substance compared to the model with lower diffusion capabilities.
What results would you expect if two models were compared in a diffusion test?
The rate of diffusion would be faster for the right cylinder.
Does diffusion happen in solids?
Diffusion can occur in solids, although it typically happens at a slower rate compared to liquids and gases. In solids, diffusion involves the movement of atoms or molecules from regions of higher concentration to regions of lower concentration. This process plays a role in various phenomena such as heat conduction in metals and the distribution of impurities in semiconductor materials.
What elements would you expect to be similar to technetium?
Rhenium is similar to technetium.
Which elementswould you expect to be similar to technetium?
Technetium is chemically similar to manganese and rhenium.
What is meaning of antcipation?
Similar to expect in the near future.
Would you expect the outer shells of copper silver and gold to be similar or different?
similar, they comprise a family
What function would you expect of a tissue that contracts forcibly when stimulated?
Movement
