bio7_ch36 - Biology, 7e (Campbell) Chapter 36: Transport in...

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Biology, 7e (Campbell) Chapter 36: Transport in Vascular Plants Chapter Questions 1) Which of the following would be least likely to affect osmosis in plants? A) proton pumps in the membrane B) a difference in solute concentrations C) receptor proteins in the membrane D) aquaporins E) a difference in water potential Answer: C Topic: Concept 36.1 Skill: Comprehension 2) Active transport involves all of the following except the A) slow movement through the lipid bilayer of a membrane. B) pumping of solutes across the membrane. C) hydrolysis of ATP. D) transport of solute against a concentration gradient. E) a specific transport protein in the membrane. Answer: A Topic: Concept 36.1 Skill: Comprehension 3) Like many plant processes, transport of various materials in plants at the cellular level requires all of the following except A) a proton gradient. B) ATP. C) specific membrane proteins. D) active transport. E) xylem membranes. Answer: E Topic: Concept 36.1 Skill: Comprehension 4) Which of the following is not a function of the plasma membrane proton pump? A) hydrolyzes ATP B) produces a proton gradient C) generates a membrane potential D) equalizes the charge on each side of a membrane E) stores potential energy on one side of a membrane Answer: D Topic: Concept 36.1 Skill: Comprehension 1
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A unifying principle of cellular energetics that links energy-releasing processes to energy-consuming processes is A) active transport. B) chemiosmosis. C) ATP hydrolysis. D) water potential. E) source-sink relationships. Answer: B Topic: Concept 36.1 Skill: Knowledge 6) Which of the following is an example of osmosis? A) flow of water out of a cell B) pumping of water into a cell C) flow of water between cells D) both A and B E) both A and C Answer: E Topic: Concept 36.1 Skill: Comprehension 7) The amount and direction of movement of water in plants can always be predicted by measuring which of the following? A) air pressure B) rainfall C) proton gradients D) dissolved solutes E) water potential (Ψ) Answer: E Topic: Concept 36.1 Skill: Comprehension 8) Which of the following is true concerning the water potential of a plant cell? A) It is higher than that of air. B) It is equal to zero when the cell is in pure water and is turgid. C) It is equal to 0.23 MPa. D) It becomes higher when K + is actively moved into the cell. E) It becomes lower after the uptake of water by osmosis. Answer: B Topic: Concept 36.1 Skill: Knowledge 9) Your laboratory partner has an open beaker of pure water. By definition, the water potential (Ψ) of this water is A) not meaningful, because it is an open beaker and not plant tissue. B) a negative number set by the volume of the beaker. C) a positive number set by the volume of the beaker.
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bio7_ch36 - Biology, 7e (Campbell) Chapter 36: Transport in...

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