oxygen gas Correct The answer is b DNA 8 What is the difference between active

Oxygen gas correct the answer is b dna 8 what is the

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oxygen gasCorrect! The answer is b. DNA.8. What is the difference between active transport (AT) and facilitated diffusion (FD)?8. What is the difference between active transport (AT) and facilitated diffusion (FD)?AT requires protein carriers; FD does not.b.AT requires energy; FD does not.
c.AT requires a concentration gradient; FD does not.d.AT requires a membrane; FD does not.e.all of the aboveCorrect! The answer is b. AT requires energy; FD does not.9. Which type of membrane carrier is responsible for rapid water transport?a.b.c.d.a uniportera symporteran antiporter9. Which type of membrane carrier is responsible for rapid water transport?e.a channel proteinCorrect! The answer is e. A channel protein.10. Which type of membrane carrier is responsible for the creation of Na+and K+gradients across the membrane of animal cells?a uniporter++gradients across the membrane of animal cells?an ATP-powered pumpe.a channel proteinCorrect! The correct answer is d. An ATP-powered pump.11. Through which type of membrane carrier does one substance move "downhill" into the cell while another substance is being moved "uphill" out of the cell?a uniporter
a symporteran antiporteran APT-powered pumpe.a channel proteinCorrect! The correct answer is c. An antiporter.12. Which of the following osmotic situations does the figure below demonstrate?a.plasmolysisb.lysisc.cell shrinkage in the absence of a surrounding walld.turgorCorrect! The correct answer is a. plasmolysis.13. Which of the following statements regarding membrane transport is false?a.Polar and charged solutes will not cross cell membranes effectively without specific protein carriers.b.Each protein carrier will only bind and transport one (or at most a few very similar) type of solute.c.Sugars such as glucose are always transported by active transport rather than by facilitated diffusion carriers.
d.Large molecules, such as proteins, usually are not transported across cell membranes.e.Ions are typically transported by special proteins that form membrane channels.Correct! The false statement is c. Sugars such as glucose are always transported by active transport rather than by facilitated diffusion carriers.14. Uniporters are:a.proteinsb.facilitated diffusion carriersc.often used to transport amino acids and sugars within the human bodyd.all of the aboveCorrect! The correct answer is d. all of the above.15. Animal cells contain membrane vesicles called lysosomes, filled with enzymes that can degrade proteins, lipids, nucleic acids, and other biomolecules. These enzymes are most effective at acid pH, and it can be experimentally shown that the pH inside lysosomes is about 5.0, whereas the pH of the cell cytoplasm is close to 7.0. The diagram (at right) illustrates one lysosome inside a cell. Which of the following is the most likely explanationfor how the cell maintains such a high concentration of protons (H+ions) inside the lysosome?

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