Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 5, Problem 3VCQ
Figure 5.19 If the pH outside the cell decreases, would you expect the amount of amino acids transported into the cell to increase or decrease?
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If the ph outside the cell decreases, would you expect the amount of amino acids transported into the cell to increase or decrease?
Which process requires energy—passive or active transport? Why is energy sometimes required to move solute across the cell membrane?
A red blood cell with an intracellular fluid (ICF) concentration of 280 mmol/L, is placed into an environment
were the concentration of the extracellular fluid (ECF) is 305 mmol/L. As a result, water will move across the
cell/plasma membrane.
a) Name the process by which water moves
b) Describe the overall direction of movement of the water. Answer choices: (i) From outside the cell to inside
the cell (ii) From inside the cell to outside the cell, or (iii) Equally, into and out of the cell
iii Explain your reasoning for your answer to part (c). 1In your answer you must describe the environment on
both sides of the membrane, and use 3 of the following 4 terms correctly; hypertonic, hypotonic, lower solute
concentration, higher solute concentrationn (2pts
-Correct use of biological terminology, and correct spelling is essential.
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Chapter 5 Solutions
Biology 2e
Ch. 5 - Figure 5.12 A doctor injects a patient with what...Ch. 5 - Figure 5.16 Injecting a potassium solution into a...Ch. 5 - Figure 5.19 If the pH outside the cell decreases,...Ch. 5 - Which plasma membrane component can be either...Ch. 5 - Which characteristic of a phospholipid contributes...Ch. 5 - What is the primary function of carbohydrates...Ch. 5 - A scientist compares the plasma membrane...Ch. 5 - Water moves via osmosis. throughout the cytoplasm...Ch. 5 - The principal force driving movement in diffusion...Ch. 5 - What problem is faced by organisms that live in...
Ch. 5 - In which situation would passive transport not use...Ch. 5 - Active transport must function continuously...Ch. 5 - How does the sodium-potassium pump make the...Ch. 5 - What is the combination of an electrical gradient...Ch. 5 - What happens to the membrane of a vesicle after...Ch. 5 - Which transport mechanism can bring whole cells...Ch. 5 - In what important way does receptor-mediated...Ch. 5 - Many viruses enter host cells through receptor-...Ch. 5 - Which of the following organelles relies on...Ch. 5 - Imagine a cell can perform exocytosis, but only...Ch. 5 - Why is it advantageous for the cell membrane to be...Ch. 5 - Why do phospholipids rend to spontaneously orient...Ch. 5 - How can a cell use an extracellular peripheral...Ch. 5 - Discuss why the following affect the rate of...Ch. 5 - Why does water move through a membrane?Ch. 5 - Both of the regular intravenous solutions...Ch. 5 - Describe two ways that decreasing temperature...Ch. 5 - A cell develops a mutation in its potassium...Ch. 5 - Where does the cell get energy for active...Ch. 5 - How does the sodium-potassium pump contribute to...Ch. 5 - Glucose from digested food enters intestinal...Ch. 5 - The sodium/calcium exchanger (NCX) transports...Ch. 5 - Why is it important that there are different types...Ch. 5 - Why do ions have a difficult time getting through...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- "In a beaker containing 6% NaCl, you place a cell which contains 0.9% NaCl. NaCl doesn t cross the membrane. What will be the result?" a) There will be net movement of water into the cell. b) There will be net movement of NaCl into the cell. c) There will be net movement of water out of the cell. d) There will be net movement of NaCl out of the cell. e) The cell will swell.arrow_forwardThe transport of a certain molecule exhibits the following characteristics: (1) The molecule moves down its concentration gradient; (2) at concentrations above a given level, there is no increase in the rate of transport; and (3) cellular energy is not required for transport to occur. Which type of transport process is at work?arrow_forwardIn the stomach, parietal cells are responsible for the formation of the gastric juice. During acid secretion, the pH in the stomach is estimated to be pH = 2, whereas parietal cells maintain an intracellular pH =7.35. The transmembrane potential of parietal cells is typically -70 mV. Body temperature 37°C. 1) Calculate the proton gradient concentration across the parietal membrane 2) Calculate the free energy change associated with the secretion of 1 mole of H* 3) Do you think that Ht transport can be driven by ATP hydrolysis at the ratio of one molecule of ATP per H* transported? You can use your textbook or other sources to check AG for ATP hydrolysis 4) If H* where free to move back to into the cell, calculate the membrane potential that would be required to prevent them to do soarrow_forward
- Hydrogen ions are charged. What would need to happen to transport them across a cell membrane, and which direction would they "flow"? What would have to happen to get them to move the other way? pH 7 000000000000000000 ||||||||||| ||||||| -----------|||||||||||||| 000000000000000000 pH 2arrow_forwardMany eukaryote cells are NOT able to synthesize (make their own) the amino acids that they require to conduct life processes. When such a cell is placed in an aqueous (water) solution containing the 20 essential amino acids, one would expect that a) nothing would happen. b) amino acids would be moved into the cell by specific membrane transport proteins. c) H2O would dissolve in the membrane. d) the cell would make Glucose into amino acids. e) the cell would divide.arrow_forwardCarbohydrates are attached to plasma membrane proteins in the ER (see Figure 7.9). On which side of the vesicle membrane are the carbohydrates during transport to the cell surface?arrow_forward
- Eukaryotic membrane fluidity can be decreased by which of the following mechanisms? increasing the degree of saturation in the fatty acids of membrane lipids decreasing the number of fatty acids attached to glycerol in membrane lipids decreasing the number of carbons in the fatty acids of membrane lipids increasing the number of branched chain fatty acids of membrane lipids increasing the number of membraned organelles in the eukaryotic cellarrow_forwardEndocytosis and exocytosis are both forms of [ ACTIVE / PASSIVE ] transport that [ DO / DO NOT ] require energy. Outline an example/scenario in which a cell would need to perform a form of endocytosis. Outline an example/scenario in which a cell would need to perform exocytosis. a) Name the 3 specific types of endocytosis. b) Exocytosis is considered the opposite/reverse process as? Pls helparrow_forwardIf 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?arrow_forward
- Eukaryotic membrane fluidity can be increased by which of the following mechanisms? increasing the number of carbons in the fatty acids of membrane lipids increasing the number of fatty acids attached to glycerol in membrane lipids increasing the number of straight-chain fatty acids of membrane lipids increasing the degree of unsaturation in the fatty acids of membrane lipids increasing the number of membraned organelles in the eukaryotic cellarrow_forwardGlucose (C6H12O6) exhibits which of the following membrane transport movements? it is able to cross the membrane by facilitated diffusion, because it is small, polar, and organic it is not able to cross the membrane by passive transport, because it is big, polar, and inorganic it is able cross the membrane by simple diffusion, because it is small, nonpolar, and inorganic it is not able to cross the membrane by active transport, because it is big, polar, and inorganic it is able to cross the membrane by active transport, because it is big, nonpolar, and organic 10. A red blood cell that displays a biconcave disc shape must be in which of the following solutions? hypertonic solution distilled water isotonic solution ocean water hypotonic solutionarrow_forwardWhat is the significance of knowing the reason why the same protein system moves both sodium and potassium ions into and out of the cell?arrow_forward
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