Both simple diffusion and facilitated diffusion B. facilitated diffusion C. simple diffusion D. active transport

Diatomic oxygen (O2) exhibits which of the following membrane transport movements? A. it is not able to cross the membrane by passive transport, because it is big, polar, and inorganic it is not able to cross the membrane by active transport, because it is big, polar, and inorganic it is able to cross the membrane by facilitated diffusion, because it is small, polar, and organic it is able to cross the membrane by active transport, because it is big, nonpolar, and organic it is able cross the membrane by simple diffusion, because it is small, nonpolar, and inorganic

Which of the following is most likely to pass through the cell membrane via facilitated diffusion? A B с D a polar molecule moving against the concentration gradient a nonpolar molecule moving along the concentration gradient a nonpolar molecule moving against the concentration gradient a polar molecule moving along the concentration gradient

What type of cellular transport do Epithelial sodium channels (ENaC)s perform? Group of answer choices Simple diffusion Secondary active transport Facilitated diffusion Primary active transport

What effect might a solvent such as ethanol have on membrane permeability? Explain your answer using ideas about membrane structure.

Which of the following is correctly paired? Two answer choices are correct.   osmosis= a type of active transport   facillitated diffusion = a transport proteins are used to move substances across a membrane   diffusion = a type of passive transport

Discuss why the following affect the rate of diffusion:molecular size, temperature, solution density, and thedistance that must be traveled.

Statement 1: The direction of diffusion of a solute across a membrane is determined by its concentration gradient and always moves toward equilibrium. Statement 2: In passive transport, solutes move down the gradient from a region of low concentration to a region of high concentration. A Both statements are true. Both statements are false. C) Statement 1 is true. Statement 2 is false. Statement 1 is false. Statement 2 is true.

secondary active transport depends on which of the following principals a. sodium is pumped pout of the cells against a concentration gradient by [primary active transport b. sodium moves out the cells with a concentration gradient  c. primary active transport is necessary to pump sodium into the cell from higher to lower concentration d. diffusion causes sodium to move our of the cell

6. Which diagram shows the appearance of a cell with an original Y of -1.2 kPa, after being placed in a solution as shown? A B C D water potential (Y) of external solution / kPa -06 -1-2 -00 -1-5 7. Which pair of factors is inversely proportional to the rate of diffusion? A. Concentration gradient and surface area over which diffusion occurs. B. Distance over which diffusion occurs and size of diffusion molecule. C. Size of diffusion molecule and concentration gradient. D. Surface area over which diffusion occurs and distance over which diffusion occurs. 8. The diagram shows two molecules of glucose. Four possible bonding positions are labelled p, q, r and s; and t, u, v and w. CH,OH CH,OH ОН OH Но ОН Но OH S w u OH OH V When these two molecules condense to form glycogen, where could bonds form? A. p-u or p – v B. p- u or q - w C. p – v or q – w D. p – w or v - w