Question

3. Which of the following statements is true? (1 point)
During active transport, a material may be moved from an area of low concentration to an area of high concentration.
During passive transport, energy is used to move material against a concentration gradient.
During active transport, water is pumped across a membrane to equalize the concentration of salts on both sides.
During passive transport, osmosis allows salts to move from one side of the membrane to the other to equalize concentrations on both sides.

Answer 1

A

Answer 2

active transport requires the expenditure of energy (ATP) and it goes against the concentration gradient (from low to high conc)

Answer 3

could you answer these two please 1. During diffusion, when the concentration of molecules on both sides of a membrane is the same, the molecules will (1 point)
move across the membrane to the outside of the cell.
stop moving across the membrane.
continue to move across the membrane in both directions.
move across the membrane to the inside of the cell.
2. An animal cell that is surrounded by fresh water will burst because the osmotic pressure causes (1 point)
water to move into the cell.
water to move out of the cell.
solutes to move into the cell.
solutes to move out of the cell.

Answer 4

DIffusion is passive (meaning it follows the concentration gradient which is high to low) and it's in equilibrium meaning it keeps moving in both directions at the same rate, so the net change is zero but there is movement. so C

water moves into the cell to equilibrate the concentrations in both systems (inside and outside of cell)

Answer 5

ty

Answer 6

np