Human Anatomy (9th Edition)
9th Edition
ISBN: 9780134320762
Author: Frederic H. Martini, Robert B. Tallitsch, Judi L. Nath
Publisher: PEARSON
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Chapter 2, Problem 10RFT
All of the following membrane transport mechanisms are passive processes except
(a) facilitated diffusion.
(b) vesicular transport.
(c) diffusion.
(d) osmosis.
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The distinctive properties of facilitated diffusion are:
(a) Increase the speed of diffusion of substances
(b) Transport of substances towards increasing concentration
Additional energy consumption for transport
(c)
Transfer of substance involving carriers
(d)
Integration flux of substance and ion transport
(e)
Which statements are consistent with the known facts about membrane transport? (a) Active transport moves a substance from a region in which its concentration is lower to one in which its concentration is higher. (b) Transport does not involve any pores or channels in membranes. (c) Transport proteins may be involved in bringing substances into cells.
Which of the following processes requires the cell to expend metabolic energy directly (e.g., from ATP)? (a) osmosis (b) facilitated diffusion (c) all forms of carrier-mediated transport (d) active transport (e) simple diffusion
Chapter 2 Solutions
Human Anatomy (9th Edition)
Ch. 2 - Level 1 Reviewing Facts and Terms Match each...Ch. 2 - Prob. 2RFTCh. 2 - Level 1 Reviewing Facts and Terms Match each...Ch. 2 - Level 1 Reviewing Facts and Terms
Match each...Ch. 2 - Prob. 5RFTCh. 2 - Prob. 6RFTCh. 2 - Level 1 Reviewing Facts and Terms Match each...Ch. 2 - Match each numbered item with the most closely...Ch. 2 - Prob. 9RFTCh. 2 - All of the following membrane transport mechanisms...
Ch. 2 - Prob. 11RFTCh. 2 - Compared to the intracellular fluid, the...Ch. 2 - 13. Label the following organelles on the diagram...Ch. 2 - Prob. 14RFTCh. 2 - Prob. 15RFTCh. 2 - 16. Three major functions of the endoplasmic...Ch. 2 - 17. A selectively permeable plasma membrane
(a)...Ch. 2 - Prob. 18RFTCh. 2 - Identify the advantages a cell has because its...Ch. 2 - 2. Identify the three basic concepts that make up...Ch. 2 - 3. Identify the three passive processes by which...Ch. 2 - Compare and contrast facilitated diffusion and...Ch. 2 - Prob. 5RCCh. 2 - Prob. 6RCCh. 2 - 7. Name the stages of mitosis shown in this...Ch. 2 - Identify the four general functions of the plasma...Ch. 2 - Prob. 1CTCh. 2 - Experimental evidence demonstrates that in the...Ch. 2 - Solutions A and B are separated by a selectively...
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- Diffusion is important in body fluids because this process tends to:(a) increase local concentration gradients. (b) eliminate local concentration gradients. (c) move substances against their concentration gradients. (d) create concentration gradients.arrow_forwardWhich statements are consistent with the fluid-mosaic model of membranes? (a) All membrane proteins are bound to the interior of the membrane. (b) Both proteins and lipids undergo transverse (flip-flop) diffusion from the inside to the outside of the membrane. (c) Some proteins and lipids undergo lateral diffusion along the inner or outer surface of the membrane. (d) Carbohydrates are covalently bonded to the outside of the membrane. (e) The term mosaic refers to the arrangement of the lipids alone.arrow_forwardDistinguish between simple diffusion (SD), facilitated diffusion (FD), and active transport (AT) across a membrane for the following questions. (a) Which processes are energy dependent? (b) Which processes need some kind of carrier protein(s)? (c) Which processes can be saturated by substrate? (d) Which processes can establish a concentration gradient? (e) How much energy does it take to transport an uncharged substrate in, if its starting inside concentration is 10-fold greater than outside?arrow_forward
- The three fundamental classes of proteins involved in transport across membranes are: i) channelsii) pumpsiii) exchangers For each class, describe its essential features, explain how transport is accomplished and name at least one representative example.arrow_forwardWhich of the following processes includes all the others?(A) osmosis(B) diffusion of a solute across a membrane(C) passive transport(D) transport of an ion down its electrochemical gradientarrow_forwardDefine the terms (i) facilitated diffusion, (ii) primary active transport and (iii) secondary active transport. Identify which of these transport types the following are examples of: a) ATP/ADP translocase b) K^+ channels c) Bacteriorhodopsinarrow_forward
- If a solute to be transported across the plasma membrane is a much larger molecule than an ion or glucose and more like a biopolymer or a dangerous digestive enzyme or a drop of proteins, cells use a completely different type of transport mechanism called ……………………………arrow_forwardAs molecular weight increases.a). the rate of diffusion remain unchanged.b). the rate of diffusion decreases.c). the rate of diffusion increases.d). the rate of diffusion stops.arrow_forward1)What is the second type of lipid that plays a major role in the plasma membrane? This lipid does not have polar and nonpolar regions (its not amphiphilic) but plays a critical role in membrane permeability. A)Triglycerdies B) Steriod hormones c) cholesterol 2) In _______________, a single substrate/solute move from a high concentration area to a lower concentration are without the aid of any additional molecules. A) Diffusion B)Facilitated diffusion C) Cotransport 3)Channel proteins require a confirmational change in order to properly function. A) Hydrophilic B) ionic C) Polararrow_forward
- c) Figure 3 shows how materials are actively transported across plasma membrane. Extracellular Process X Process Y Figure 3 i) Give two (2) similarities between process X and Y. ii) State two (2) characteristics of a cell that carry out active transport. .... ...... ..... ... ..........arrow_forwardFactors that affect the rate of diffusion through a membrane include all of the following EXCEPT: a)membrane surface area. b) molecular weight. c) availability of energy. d) steepness of concentration gradient.arrow_forwardThe fundamental bilayered structure of the plasma membrane is determined almost exclusively by (a) phospholipid molecules, (b) peripheral proteins, (c) cholesterol molecules, (d) integral proteins.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