Biology: Life on Earth
10th Edition
ISBN: 9780321729712
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: Benjamin Cummings
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Textbook Question
Chapter 5, Problem 6RQ
Describe the following types of transport processes in cells: simple diffusion, facilitated diffusion, active transport, pinocytosis, receptor- mediated endocytosis, phagocytosis, and exocytosis.
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Factors that affect the rate of diffusion through a membrane include all of the following EXCEPT:
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Describe the permeability of cell membranes. How to substances cross cell membranes? Utilize the terms bi-polar, semi-permeable, diffusion, active transport, membrane proteins, endocytosis, exocytosis, vesicles, phagocytosis, pinocytosis, etc. (This should be 3-4 paragraphs long)
Explain the differences among diffusion, facilitated diffusion, active transport, and endocytosis.
Chapter 5 Solutions
Biology: Life on Earth
Ch. 5 -
1. Membranes consist of a bilayer of ________....Ch. 5 - A membrane that is permeable to some substances...Ch. 5 - Facilitated diffusion involves either _____...Ch. 5 - Prob. 4FTBCh. 5 -
5. After each molecule, place the two-word term...Ch. 5 - Prob. 6FTBCh. 5 - Describe and diagram the structure of a plasma...Ch. 5 - Prob. 2RQCh. 5 - What are the five categories of proteins commonly...Ch. 5 - Prob. 4RQ
Ch. 5 -
5. Define hypotonic, hypertonic, and isotonic....Ch. 5 -
6. Describe the following types of transport...Ch. 5 - Name the protein that allows facilitated diffusion...Ch. 5 - Imagine a container of glucose solution, divided...Ch. 5 - Prob. 9RQCh. 5 -
1. Different cells have different plasma...Ch. 5 - Predict and sketch the configuration of...Ch. 5 - The fluid portion of blood, in which red blood...Ch. 5 - Some cells in the nervous system wrap themselves...
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- Distinguish between the following pairs of terms: a. diffusion; osmosis b. passive transport; active transport c. endocytosis; exocytosisarrow_forwardDescribe the basic factors in diffusion and passive transportsystems.arrow_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
- Describe the passive processes of membrane transport, including simple diffusion, facilitated diffusion, and osmosis.arrow_forwardWhat do facilitated diffusion, primary active transport and secondary active transport have in common? a) their ability to transport molecules depends on a membrane protein b) they utilize energy in the form of ATP to move molecules c) they move small, lipophilic molecules across the membrane d) they can move molecules against a concentration gradientarrow_forwardDistinguish between passive and active transport mechanisms across cellmembranes.arrow_forward
- Which 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_forwardDistinguish active transport from passive transport; phagocytosis and pinocytosis.arrow_forwardIdentify whether each method of membrane transport is passive or active by dragging the label to the correct boxarrow_forward
- 1) You are studying a transport protein. It appears to bind temporarily to the molecule to be transported. During normal transport, no energy is expended. The addition of a particular molecule that closely resembles the normally transported molecule inhibits transport. An increase in the concentration of the normally transported molecule in the presence of a constant concentration of the inhibitor increases the rate of transport. What kind of transport is described? 2) What are peripheral membrane proteins?arrow_forwardAmong the statements a, b and c, which is/are false? a) Endocytosis is the formation of vacuoles by the plasma membrane for the purpose oftransport inside the cell a small content of extracellular fluid. b) Exocytosis is the formation of vacuoles by the plasma membrane for the purpose oftransport a small amount of intracellular fluid out of the cell. c) Pinocytosis is a form of endocytosis. d) All of these statements are false. e) None of these statements is false.arrow_forwardDistinguish between Simple diffusion and facilitated diffusion.arrow_forward
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