17. In osmosis, water moves across a semipermea a. wherever energy pulls it b. t
ID: 276020 • Letter: 1
Question
17. In osmosis, water moves across a semipermea a. wherever energy pulls it b. toward an area of lower solute concentration C. toward an area of higher solu d. independently of solutes te concentration 18. You connect two solutions of unknown solute concentration via a water-pe flows from solution A i into solution B. What can you conclude about these solutions? a. Solution B has a higher concentration of solutes b. Solution A has a higher concentration of solutes than B c. Solution A is hypertonic compared to solution B d. Both solutions have equal concentrations of solute. a. The water you added is hypertonic compared to the cells in the plant, and water will flow out of them b. The water you added is hypotonic compared to the cells in the plant, and water will flow into them. · The water you added is isotonic compared to the cells in the plant, and no water will flow. When you add water to a wilted plant, it will eventually return to its full shape. What causes this? ou are comparing a 25 percent salt solution to a 5 percent salt solution. Which of the following statements correctly describes the difference between these two 20. Y solutions? The solutions are isotonic to animal and plant cells The 5 salt percent salt solution is hypertonic compared with the 25 percent hypotonic solution. 25 percent salt solution is hypertonic compared with the S percent hypotonic solution,. a. b. Chapter 5. Section S.3 of the following would be most likely to cross a bare lipid bilayer UNASSISTED? a. sodium ions b. oxygen c. proteins d. glucose 22. Which of the following types of transport does NOT require the use of a transport protein? a. simple diffusion b. active transport c facilitated diffusion d. glucose pump 23. The glucose channel is to as the sodium-potassium pump is to_ a. b. c. d. active transport; facilitated diffusion simple diffusion; facilitated diffusion facilitated diffusion; active transport simple diffusion; active transport 24. True or false: You eat spaghetti for dinner and digest the starch in it to glucose. The glucose is now in high concentration in the cells of your small intestine, relative to its concentration in your bloodstream. Predictaby with the help of a transport protein, the glucose diffuses across the plasma membrane of your intestinal cells, into your bloodstream. a. True b. False, because diffusion moves materials from low concentration to high concentration. c. d. False, because energy is required for diffusion False, because molecules are too large to move across membranes. 25. Which type of transport could NOT occur if the cell was inhibited in the production of ATP? a. active transport b. osmosis c. simple diffusion d. facilitated diffusion 28Explanation / Answer
Answer=17]In osmosis water moves across a semipermeable membrane
c]Towards an area of higher solute concentration.
explaination= Osmosis is the process of spontaneous net movement of solvent molecules across a semipermeable membrane from a region of low solute concentration towards a region of higher solute concentration.
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18]a] Solution B has higher concentration of solutes.
explaination= in this case two solutions are of unknown concentrations ,but water moves from solution A to B.through a permeable membrane.
it means that there is process of osmosis occure.
Osmosis is the process of spontaneous net movement of solvent molecules across a semipermeable membrane from a region of low solute concentration towards a region of higher solute concentration.
therefore Solution B has higher concentration of solutes than solution A.
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19] b] the water you added is hypotonic compared to the cells in the plant,and water will flow into them.
explaination= when we add water to wilted plant ,it will eventually returns to its full shape. beacuse when plant cell is placed in hypotonic solution,it takes up water and starts to swell,but cell wall prevents ir from bursting.
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