Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 7, Problem 6TY
Summary Introduction
Introduction: Racker and Stoeckenicus conducted an experiment in which the orientation of bacteriorhodopsin was made such that H+ was pumped into a vesicle and each vesicle contains many molecules of bacteriorhodopsin.
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What kinds of molecules are likely to be included or excluded from newly formed vesicles? What is the best known example of a protein likely to be involved in the pinching off of vesicles?
If you start with 100 mM Na+ and 100 mM K+ outside the liposomes, and 100 mM Na+ and 100 mM K+ inside the liposomes like in (A), then you add ATP to the solution outside the liposomes, then how will the Na+ and K+ concentrations change?
Which of the following statements is a lie?
Select one:
a.Winemaking tanks that ferment grape juice into wine need to have pressure-release valves.
b.Mammalian red blood cells undergo lactic acid fermentation.
c.Large quantities of alcohol are toxic to humans, but not to the yeasts that ferment the alcohol.
Which of the following statements is a lie?
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a.The formation of water aids in establishing the ion gradient between the inner matrix and intermembrane space.
b.Every protein complex in the electron transport chain is involved in the direct pumping of H+ in the intermembrane space.
c.There is an existing electrochemical gradient between the intermembrane space and the inner mitochondrial matrix.
Chapter 7 Solutions
Biology
Ch. 7.2 - Core Skill: Connections Look ahead to Table 45.1....Ch. 7.2 - Which organic molecules donate a phosphate group...Ch. 7.2 - Prob. 2CSCh. 7.4 - Prob. 1CCCh. 7.5 - Explain the meaning of the name cytochrome...Ch. 7.6 - Prob. 1CCCh. 7.6 - Prob. 1CSCh. 7.6 - Prob. 1EQCh. 7.6 - CoreSKILL In the experiment of Figure 7.13, what...Ch. 7.6 - Prob. 3EQ
Ch. 7.7 - Prob. 1CCCh. 7 - Which of the following pathways occurs in the...Ch. 7 - Prob. 2TYCh. 7 - Prob. 3TYCh. 7 - Which organic molecule supplies a two-carbon group...Ch. 7 - The ability to diagnose tumors using...Ch. 7 - Prob. 6TYCh. 7 - Certain drugs, which are called ionophores, cause...Ch. 7 - Prob. 8TYCh. 7 - Prob. 9TYCh. 7 - Prob. 10TYCh. 7 - Prob. 1CQCh. 7 - What causes the rotation of the subunit of ATP...Ch. 7 - Core Concept: Energy and Matter How is glucose...Ch. 7 - Discuss the advantages and disadvantages of...Ch. 7 - Prob. 2COQ
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- yeasts are able to produce high internal concentrations of glycerol to counteract the osmotic pressure of the surrounding media. suppose that a sample of yeast cells were placed in a 4% sodium chloride solution by weight. The density of solution is at 25 C = 1.02 g/ml, Molecular weight of solute = 58.44 g/mol, i of glycerol = 1 and R=0.08205 L-atm/mol-K What is the weight of solute in grams What is the moles of solute What is the volume of the solution in liters What is the molarity of the solution What is the value of the temperature to be used to solved for the osmotic pressure of the solution What is the osmotic pressure of solutionarrow_forward______transport (general term)uses the energy of Browain motion associated with gradients to move materials from one place to another without the use of "cellular energy".A specific example of this type of transport is ‐-----------arrow_forwardAssume that a beaker is divided in half by a membrane which is permeable to water only. A 0.45 M glucose solution is on one side of the membrane, and a 0.40 M NaCl solution is on the other side of the membrane. Indicate which direction would water move. Explain why the movement occurs in that direction.arrow_forward
- The solution outside the cell is 65% water and 35% solute, while inside the cell is 55% water and 45% solute. The solution around the cell is...??arrow_forwardTo study the mechanism of SERCA, you prepare membrane vesicles containing this protein oriented such that its ATP binding site is on the outer surface of the vesicle. To measure pump activity, you use an assay that detects the formation of inorganic phosphate in the medium. When you add calcium and ATP to the medium, you observe phosphate production for only a short period of time. Only after the addition of calcimycin , a molecule that makes membranes selectively permeable to calcium, do you observe sustained phosphate production. Explain.arrow_forwardWhich of the following statements is NOT TRUE about the "lipid divide"? a. Refers to the origin of energy-generating organelles in Eukaryotes. b. Discusses the presence of pseudomurein in the cell membrane of Archaea as opposed to the presence of peptidoglycan in bacterial cell membranes. c. It implies that ether-glycerol linkages in the plasma membrane set Archaea apart from Bacteria and Eukarya. d.It refers to the unique composition of the phospholipids of the cell membrane among the three domains.arrow_forward
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