Foundations in Microbiology
10th Edition
ISBN: 9781259705212
Author: Kathleen Park Talaro, Barry Chess Instructor
Publisher: McGraw-Hill Education
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Chapter 7.L1, Problem 9MCQ
Summary Introduction
Introduction:
Osmosis is defined as the movement of water molecule across the cell membrane along the gradient.
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8. If two solutions with concentrations of 0.2 M sugar and 0.4 M sugar respectively are separated by a semipermeable membrane, during osmosis, what is the direction of the net flow?
a. Sugar molecules from the concentrated to the dilute solution
b. Sugar molecules from the dilute to the concentrated solution
c. Water molecules from the concentrated to the dilute solution
d. Water molecules from the dilute to the concentrated solution
A cell exposed to a hypertonic environment will ________ by osmosis.a. gain water
b. lose water
c. neither gain nor lose water
d. burst
2. Best description of a semi-permeable membrane in the context of osmosis.
A. A membrane that allows neither solute nor solvent particles to pass through it.
B. A membrane that allows solute particles, but not solvent particles, to pass
through it.
1. A membrane that aliows solvent particles, but not solute particles, to pass
through it.
2. A membrane that allows both solute and solvent particles to pass through it.
Chapter 7 Solutions
Foundations in Microbiology
Ch. 7.1 - 1. Describe the major environmental factors to...Ch. 7.1 - 2. Define nutrition and nutrients and their...Ch. 7.1 - 3. Differentiate between organic and inorganic...Ch. 7.1 - Prob. 4ELOCh. 7.1 - Prob. 1CYPCh. 7.1 - Prob. 2CYPCh. 7.1 - 3. List the general functions of the essential...Ch. 7.1 - 4. Define growth factors and metallic ions with...Ch. 7.2 - 5. Describe the main categories of nutritional...Ch. 7.2 - 6. Distinguish different types of autotrophs and...
Ch. 7.2 - Prob. 7ELOCh. 7.2 - 5. Compare autotrophs and heterotrophs with...Ch. 7.2 - 6. Describe the nutritional strategy of two types...Ch. 7.2 - Prob. 7CYPCh. 7.2 - Prob. 8CYPCh. 7.3 - 8. Describe the basic factors in diffusion and...Ch. 7.3 - Prob. 9ELOCh. 7.3 - 10. Analyze adaptations microbes make in response...Ch. 7.3 - Prob. 11ELOCh. 7.3 - 9. Compare and contrast passive and active forms...Ch. 7.3 - Prob. 10CYPCh. 7.3 - 11. Explain the differences between facilitated...Ch. 7.3 - 12. Compare the effects of isotonic, hypotonic,...Ch. 7.4 - 12. Differentiate between habitat and niche.Ch. 7.4 - 13. Describe the range of temperatures a microbe...Ch. 7.4 - Prob. 14ELOCh. 7.4 - Prob. 15ELOCh. 7.4 - Prob. 16ELOCh. 7.4 - Prob. 17ELOCh. 7.4 - Prob. 13CYPCh. 7.4 - Prob. 14CYPCh. 7.4 - 15. Explain what it means to be an obligate...Ch. 7.4 - 16. Where in the body are anaerobic habitats apt...Ch. 7.4 - Prob. 17CYPCh. 7.5 - 18. Outline the types of associations among...Ch. 7.5 - Prob. 19ELOCh. 7.5 - Prob. 20ELOCh. 7.5 - Prob. 21ELOCh. 7.5 - Prob. 22ELOCh. 7.5 - Prob. 18CYPCh. 7.5 - Prob. 19CYPCh. 7.5 - Prob. 20CYPCh. 7.5 - 21. Relate several advantages to communication...Ch. 7.6 - Prob. 23ELOCh. 7.6 - 24. Describe the process of population growth and...Ch. 7.6 - 25. Explain the stages in the population growth...Ch. 7.6 - Prob. 26ELOCh. 7.6 - 22. What is microbial growth? Explain the stages...Ch. 7.6 - 23. Why is growth called exponential? What causes...Ch. 7.6 - 24. Contrast two different methods of detecting...Ch. 7.6 - 25. Explain the relationship between colony counts...Ch. 7.L1 - 1. An organic nutrient essential to an...Ch. 7.L1 - Prob. 2MCQCh. 7.L1 - 3. An organism that can synthesize all its...Ch. 7.L1 - Prob. 4MCQCh. 7.L1 - Prob. 5MCQCh. 7.L1 - 6. Which of the following substances are required...Ch. 7.L1 - 7. A pathogen would most accurately be described...Ch. 7.L1 - Prob. 8MCQCh. 7.L1 - Prob. 9MCQCh. 7.L1 - Prob. 10MCQCh. 7.L1 - Prob. 11MCQCh. 7.L1 - 12. Which of the following is not involved in...Ch. 7.L1 - 13. Superoxide ion is toxic to strict anaerobes...Ch. 7.L1 - Prob. 14MCQCh. 7.L1 - 15. In a viable plate count, each ____ represents...Ch. 7.L1 - 16. The stage in population growth with the...Ch. 7.L1 - Prob. 1CSRCh. 7.L1 - Prob. 2CSRCh. 7.L1 - Prob. 3CSRCh. 7.L1 - Prob. 1WCCh. 7.L1 - Prob. 2WCCh. 7.L1 - Prob. 3WCCh. 7.L1 - Prob. 4WCCh. 7.L1 - 5. a. What biochemical events in quorum sensing...Ch. 7.L1 - 6. Explain what is happening to the population at...Ch. 7.L1 - Prob. 7WCCh. 7.L2 - 1. a. Is there a microbe that could grow on a...Ch. 7.L2 - 2. Describe how one might determine the nutrient...Ch. 7.L2 - 3. Patients with ketoacidosis associated with...Ch. 7.L2 - Prob. 4CTCh. 7.L2 - 5. Provide some suggestions for treating anaerobic...Ch. 7.L2 - Prob. 6CTCh. 7.L2 - Prob. 7CTCh. 7.L2 - Prob. 8CTCh. 7.L2 - 9. Describe the similarities and differences...Ch. 7.L2 - 1. Place appropriate points on the axes and draw...Ch. 7.L2 - Prob. 2VC
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- Ion pumps and phagocytosis are both examples of ________. a. endocytosis b. passive transport c.active transport d. facilitated diffusionarrow_forwardCells in a hypertonic solution tend to: a. shrink due to water loss b. swell due to water gain c. stay the same size due to water moving into and out of the cell at the same rate d. none of the abovearrow_forwardThere is a 2M concentration of molecule X inside the cell, whereas there is a 0.4M concentration of molecule X outside the cell. The cell is ______ to the solution a. Hypotonic b. Hypertonic c. Isotonic d. Who knows!arrow_forward
- If a cell is placed in a(n) solution, lysis of the cellmay occur.a. hypertonic b. isotonic c. hypotonic d. isosmoticarrow_forward10. Which of the following best represents the net movement of molecules in osmosis? А. Sugar С. -Water -Water Sugar Semipermeable membrane D. Sugar - Water Sugar – Water Semipermeable membrane B.arrow_forward18.. Use the following diagram to answer the questions. Assume the membrane is semipermeable to glucose, water, and iodine (IKI). A. Which solutes will diffuse into the cell? B. Which solute will diffuse out of the cell? 10% glucose 40% glucose C. Which solute will not diffuse at all? 20% starch 0% starch D. What type of solution (the outside of the cell - hypertonic, isotonic or hypotonic) does the diagram represent? 70% water 50% water 10% IKI E. What color will the cell be at the conclusion of this experiment? What color will the solution in the beaker be? Justify your answer,arrow_forward
- 8.Patients who enter the emergency room dehydrated are usually given sterile saline solution intravenously. The solution administered is isotonic to prevent cell damage. What would happen if the solution was hypotonic? Group of answer choices A. Hypotonic solutions have a higher osmotic pressure than that within cells so hemolysis can occur B. Hypotonic solutions have a lower osmotic pressure than that within cells so crenation can occur can occur. C. Hypotonic solutions have a lower osmotic pressure than that within cells so hemolysis can occur. D. Hypotonic solutions have the same osmotic pressure as that within cells so nothing will happen. 9.The solubility of CaCl2 in water is135g/100 ml. What would be the best method for preparing a 50.0 mL of supersaturated CaCl2 solution? Group of answer choices A. add 72 g of CaCl2 to 50.0 mL of H2O at 100 °C while stirring at room temperature B. add 67 g of CaCl2 to 50.0 mL of H2O at 100 °C while stirring at room temperature…arrow_forward9. Which of the following cellular process is coupled with the hydrolysis of ATP? A. Facilitated diffusion B. Active transport C. Chemiosmosis D. Osmosis E. Na+ movement into a nerve cellarrow_forwardIf a cell is in an isotonic environment, then a. the cell will gain water and burst. b. no water will move across the membrane. c. the cell will lose water and shrink. d. osmosis still occurs, but there is no net gain or loss of cell volume.arrow_forward
- 31. What will cause the cell to shrink when placed in hypertonic solution? A. No difference in concentration of water molecules inside and outside the cell B. Constant concentration of water molecules inside and outside the cell C. Lower concentration of water molecules inside the cell than outside D. Greater concentration of water molecules inside the cell than outsidearrow_forward1. A researcher is studying White Blood Cells (Leukocytes) of a patient infected with Tuberculosis bacteria. He notices that the bacteria are in vesicles in the cytoplasm. How did the bacteria come to be inside the cell? a.Exocytosis b.Pinocytosis c.Receptor-mediated endocytosis d.Transcytosis Active transport must function continuously because ________________. a.facilitated transport opposes active transport b.not all membranes are amphiphilic c.diffusion is constantly moving solutes in opposite directions d.the cell needs ions outside the cell e.plasma membrane wear outarrow_forward33. Which statements concerning passive and active transport are correct? A. Both passive and active transport requires cell energy B. Passive requires cell energy while active transport does not C. Active transport requires cell energy while passive does not D. Neither passive nor active transport requires cell energyarrow_forward
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