Which of the following is an example of a primary active transport? a.CPT-I b.Na+/K+ pump c.proton pump d.O2 pump
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Which of the following is an example of a primary active transport?
a.CPT-I
b.Na+/K+ pump
c.proton pump
d.O2 pump
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- Which of the following statements is true about active transport? A. The transported species always moves against its electrochemical gradient. B. It is needed only for the transport of polar molecules. C. It is exergonic. D. It must be linked to ATP hydrolysis.Which of the following is an example of a secondary active transport? a. CPT-I b. O2 pump c. Na+/K+ pump c. proton pumpOne substance flows down its concentration gradient, and the energy is harnessed to move another substance up its gradient in the same direction. This best describes a. primary active transport. b. endocytosis. c. symport secondary active transport. d. antiport secondary active transport.
- Active transport of a substance across a membrane requiresa. a gradient b. the expenditure of ATP c. water d. diffusionDuring passive transport, substances will move across a selectively permeable membrane until… explain why A. There is no longer any energy to be used B. All solutes reach the other side of the membrane C. There is no more room inside of the cell D. Equilibrium is reachedThe energy required for active transport can come from: A. A concentration gradient B. A high energy molecule like ATP C. A and B D. Neither A nor B
- Which of the following best describes a hyperosmotic solution? A. a solution with a higher concentration of solutes as compared to the other side of the membrane B. a solution with a lower concentration of solute as compared to the other side of the membrane C. a solution with equal solute concentration as compared to the other side of the membrane D. none of the aboveChoose the processes from the list below which require active transport A. Water moving through the membrane B. Sodium moving out of a cell C. Potassium moving into a cell D. Endocytosis E. Oxygen moving from inhaled air into blood stream.A transport protein requires ATP to pump sodium ions across a membrane. This is a case of_______ . a. passive transport c. osmosis b. active transport d. facilitated diffusion
- Facilitated transport differs from diffusion in that facilitated diffusiona. involves the passive use of a carrier protein.b. involves the active use of a carrier protein.c. moves a molecule from a low to a high concentration.d. involves the use of ATP molecules.Which of the following is true of passive transport?a. it requires a gradient b. it uses the cell wall c. it includes endocytosis d. it only moves waterDifferentiate the following in terms of description and properties. a. Diffusion b. Active transport c. Osmosis d. Imbibition