BIOLOGY 2E
2nd Edition
ISBN: 9781506699851
Author: OpenStax
Publisher: XANEDU PUBLISHING
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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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Which process requires energy—passive or active transport? Why is energy sometimes required to move solute across the cell membrane?
The 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?
"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.
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
- Many 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_forwardIn the Nernst equation [V = 62 log10 (Co/ Ci)], the term Ci represents: the extracellular concentration of potassium the extracellular concentration of sodium the membrane potential (in millivolts) the intracellular concentration of calcium the intracellular concentration of potassium Which of the following ions must be kept to very low concentrations within the cell cytoplasm in order to allow for enough substrate molecules to synthesize nucleotides and nucleic acids? HCO3- (bicarbonate) Ca2+ (calcium) PO43- (phosphate) Na+ (sodium) K+ (potassium)arrow_forwardEukaryotic 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_forward
- What 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_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_forwardOur cells need glucose for energy. When blood glucose is low, glucose must still be moved into our cells against its concentration gradient, using energy from ion gradients. The process used to bring glucose in under these conditions is: a) facilitated diffusion through a channel b) secondary active transport c) osmosis d) facilitated diffusion through a carrier e) primary active transportarrow_forward
- Glucose (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_forwardTwo NaCl solutions, Solution A and Solution B, are separated by a selectively permeable membrane. You observe that the movement of solvent is from Solution B to Solution A. Which solution initially had the higher salt concentration? Question 2 options: a) solution A b) solution B c) Neitherarrow_forwardWhat role does the plasma membrane play in the regulation of intracellular fluid composition? Don't copy from Googlearrow_forward
- Magnesium ions are in higher concentration inside the cell. What process would the magnesium ions use to enter the cell? Hint: drawing a picture may help you. A) receptor-mediated endocytosis B) active transport C) simple diffusion D) osmosis E) Facilitated diffusionarrow_forwardEukaryotic membrane fluidity can be decreased by which of the following mechanisms? decreasing the number of fatty acids attached to glycerol in membrane lipids increasing the number of carbons in the fatty acids of membrane lipids increasing the degree of unsaturation in the fatty acids of membrane lipids decreasing the number of membraned organelles in the eukaryotic cell increasing the number of branched-chain fatty acids of membrane lipidsarrow_forwardDuring diffusion, what happens when the concentration of solutes on both sides of the biological membrane is the same? A) The solutes will move across the biological membrane towards the inside of the cell. B The solutes will move across the biological membrane to the outside of the cell. © The solutes will stop moving across the biological membrane. D The solutes will continue to move across the biological membrane in both directions.arrow_forward
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