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For each item choose the letter of the best answer. No need to write the explanations. 37. How does a cell identify incoming or outgoing substances? A. Uses cell metabolic processes B. Uses cell transport system C. Uses cell recognition proteins D. Uses polarity of membrane to attract substances 41. Osmosis is considered a form of diffusion. Why? A. It depends on a concentration gradient. B. it requires a semipermeable membrane. C. It depends on a water potential gradient. D. It moves from a high to low area of concentration. 42. Which is NOT true about the factors that can affect the rate of diffusion? A. application of pressure increases the rate of diffusion B. higher temperature results in a faster rate of diffusion C. the solubility of the solute does not affect the rate of diffusion D. the higher the density of the solvent, the slower the rate of diffusion 45. Which of the following is NOT true about facilitated diffusion? A. requires energy B. requires a carrier protein C. requires a concentration gradient D. all the preceding choices are true 46. What does osmosis distinctly requires? A. energy production B. concentration gradient C. semipermeable membrane D. water permeable membrane 49. Which transport mechanism will allow a sodium and potassium ions to enter the cell against the electro-chemical gradient? A. active transport B. endocytosis C. phagocytosis D. pinocytosis 50. When a cell is placed in a hypotonic solution, what will happen? A. the cell wall breaks B. the vacuole expands C. the cytoplasm shrinks D. the cell membrane shrinks 51. If someone at the end of a restaurant smokes a cigarette, you may breathe in some smoke. Which transport mechanism can explain the movement of smoke? A. active transport B. diffusion C. facilitated diffusion D. osmosis 52. When the concentration of molecules on both sides of the membrane is equal, what is happening to the diffusing molecules? A. going outside of the cell B. going inside of the cell C. continue moving on both directions D. stop moving across the membrane

For each item choose the letter of the best answer. No need to write the explanations. 37. How does a cell identify incoming or outgoing substances? A. Uses cell metabolic processes B. Uses cell transport system C. Uses cell recognition proteins D. Uses polarity of membrane to attract substances 41. Osmosis is considered a form of diffusion. Why? A. It depends on a concentration gradient. B. it requires a semipermeable membrane. C. It depends on a water potential gradient. D. It moves from a high to low area of concentration. 42. Which is NOT true about the factors that can affect the rate of diffusion? A. application of pressure increases the rate of diffusion B. higher temperature results in a faster rate of diffusion C. the solubility of the solute does not affect the rate of diffusion D. the higher the density of the solvent, the slower the rate of diffusion 45. Which of the following is NOT true about facilitated diffusion? A. requires energy B. requires a carrier protein C. requires a concentration gradient D. all the preceding choices are true 46. What does osmosis distinctly requires? A. energy production B. concentration gradient C. semipermeable membrane D. water permeable membrane 49. Which transport mechanism will allow a sodium and potassium ions to enter the cell against the electro-chemical gradient? A. active transport B. endocytosis C. phagocytosis D. pinocytosis 50. When a cell is placed in a hypotonic solution, what will happen? A. the cell wall breaks B. the vacuole expands C. the cytoplasm shrinks D. the cell membrane shrinks 51. If someone at the end of a restaurant smokes a cigarette, you may breathe in some smoke. Which transport mechanism can explain the movement of smoke? A. active transport B. diffusion C. facilitated diffusion D. osmosis 52. When the concentration of molecules on both sides of the membrane is equal, what is happening to the diffusing molecules? A. going outside of the cell B. going inside of the cell C. continue moving on both directions D. stop moving across the membrane

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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For each item choose the letter of the best answer. No need to write the explanations. 37. How does a cell identify incoming or outgoing substances? A. Uses cell metabolic processes B. Uses cell transport system C. Uses cell recognition proteins D. Uses polarity of membrane to attract substances 41. Osmosis is considered a form of diffusion. Why? A. It depends on a concentration gradient. B. it requires a semipermeable membrane. C. It depends on a water potential gradient. D. It moves from a high to low area of concentration. 42. Which is NOT true about the factors that can affect the rate of diffusion? A. application of pressure increases the rate of diffusion B. higher temperature results in a faster rate of diffusion C. the solubility of the solute does not affect the rate of diffusion D. the higher the density of the solvent, the slower the rate of diffusion 45. Which of the following is NOT true about facilitated diffusion? A. requires energy B. requires a carrier protein C. requires a concentration gradient D. all the preceding choices are true 46. What does osmosis distinctly requires? A. energy production B. concentration gradient C. semipermeable membrane D. water permeable membrane 49. Which transport mechanism will allow a sodium and potassium ions to enter the cell against the electro-chemical gradient? A. active transport B. endocytosis C. phagocytosis D. pinocytosis 50. When a cell is placed in a hypotonic solution, what will happen? A. the cell wall breaks B. the vacuole expands C. the cytoplasm shrinks D. the cell membrane shrinks 51. If someone at the end of a restaurant smokes a cigarette, you may breathe in some smoke. Which transport mechanism can explain the movement of smoke? A. active transport B. diffusion C. facilitated diffusion D. osmosis 52. When the concentration of molecules on both sides of the membrane is equal, what is happening to the diffusing molecules? A. going outside of the cell B. going inside of the cell C. continue moving on both directions D. stop moving across the membrane
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