MasteringBiology With eText - Access
7th Edition
ISBN: 9780321911940
Author: Johnson
Publisher: PEARSON
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Chapter 3, Problem 3TY
Summary Introduction
Introduction:
Transport takes place in cells through various physical and chemical processes. Sometimes the transport of molecules requires specialized channels, sometimes it happens because of the concentration gradient of the substance to be transported. In certain cases, it requires the input of energy.
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Which of the following is incorrect regarding facilitated diffusion?a. It is a passive process.b. It allows the movement of molecules from areas of lowconcentration to areas of high concentration.c. It may use either channel or carrier proteins.d. It allows the rapid transport of glucose across the membrane.
Cells transport sodium ions out of the cell against the sodium concentration gradient. This is an example of: a. facilitated diffusion b. simple diffusion c. diffusion via channel proteins d. endocytosis e. active transport
When cellular transport through the plasma membrane must be provided with energy in form of ATP to power the transport process, what is this called?
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Chapter 3 Solutions
MasteringBiology With eText - Access
Ch. 3 -
1. What is your opinion on this controversy? What...Ch. 3 - Prob. 2QCCh. 3 - Prob. 1CRCh. 3 - Prob. 2CRCh. 3 - Describe how phospholipids are oriented in the...Ch. 3 - Define passive transport and name the three...Ch. 3 - Compare and contrast endocytosis and exocytosis.Ch. 3 - Describe the activity of the sodium-potassium pump...Ch. 3 - Prob. 7CRCh. 3 - Prob. 8CR
Ch. 3 -
9. What are the four stages of ATP production...Ch. 3 -
10. Describe what happens to a cell’s ability to...Ch. 3 -
1. Which of the following adaptations would...Ch. 3 - Which of the following would be most likely to...Ch. 3 - Prob. 3TYCh. 3 - Red blood cells placed in distilled water will: a....Ch. 3 - Which organelles are most active during vigorous...Ch. 3 - Phagocytic white blood cells engulf and digest...Ch. 3 - Prob. 7TYCh. 3 -
8. Which organelles would be active in liver...Ch. 3 - Prob. 9TYCh. 3 -
10. Which of the following is/are the most...Ch. 3 - Prob. 11TYCh. 3 - Prob. 12TYCh. 3 -
13. In which stage of cell respiration does...Ch. 3 - Which of the following is/are recycled during...Ch. 3 - Most of the ATP produced during cell respiration...Ch. 3 - Imagine that you are shown two cells under the...Ch. 3 - The sodium-potassium pump is a large protein...Ch. 3 - Mitochondria resemble a bacterial cell in a number...Ch. 3 - Prob. 4AWKCh. 3 - Recently, a young man from Derby in the United...Ch. 3 - You have been selected to serve on a jury for a...
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- A transport protein requires ATP to pump sodium ions across a membrane. This is a case of ______. a. passive transport b. active transport c. facilitated diffusion d. a and carrow_forwardDistinguish between the following pairs of terms: a. diffusion; osmosis b. passive transport; active transport c. endocytosis; exocytosisarrow_forwardThe tails of the phospholipids of the plasma membrane are composed of _____ and are _____? a. phosphate groups; hydrophobic b. fatty acid groups; hydrophilic c. phosphate groups; hydrophilic d. fatty acid groups; hydrophobicarrow_forward
- Typically, our cells have a high concentration of sodium ions outside and a low concentration of sodium ions inside. Sodium ions continue to move out of the cell by the process of: a) secondary active transport b) pinocytosis c) facilitated diffusion d)simple diffusion e) primary active transport f) osmosisarrow_forwardThe movement of molecules from an area of low concentration outside of the cell membrane to an area of high concentration within a cell membrane is most likely which of the following types of transport? a. exocytosis b. diffusion c. endocytosis d. osmosisarrow_forwardWhich of the following statements is correct about passive diffusion? Select one: A) It is a process in which molecules move from a region of lower concentration to one of higher concentration (or up a concentration gradient). B) It is a process in which molecules move from a region of higher concentration to a region of lower concentration (or down a concentration gradient). C) It requires an expenditure of energy by the cell. D) It may require a transport protein. E) It involves movement of molecules down a concentration gradient and may require a transport protein.arrow_forward
- Facilitated transport differs from diffusion in that facilitated diffusiona. involves the passive use of a carrier protein.b. involves the active use of a carrier protein.c. moves a molecule from a low to a high concentration.d. involves the use of ATP molecules.arrow_forwardIf magnesium ions are in higher concentration outside the cell, they would move into the cell by the process of: a) facilitated diffusion through a carrier protein b) osmosis c) secondary active transport d) facilitated diffusion through a channel protein e) exocytosis f) simple diffusion g) primary active transportarrow_forwardWhich of the following distinguishes osmosis from simple diffusion? a) a concentration gradient b) a solute c) a selectively permeable membrane d) water moleculesarrow_forward
- Our 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_forwardWhich of the following processes requires protein carriers to move materials up their concentration gradient? ____ a. active transport ____ b. osmosis ____ c. endocytosis ____ d. facilitated diffusionarrow_forwardWhich of the following is true of exocytosis, but not true of facilitated diffusion? Select all that apply. A) Involves transport vesicles B) May be used to move a hydrophilic substance to the other side of the membrane C) Requires energy D) Always moves a substance down its concentration gradient E) Always results in a substance exiting from the cell .arrow_forward
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The Cell Membrane; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=AsffT7XIXbA;License: Standard youtube license