Campbell Essential Biology (7th Edition)
7th Edition
ISBN: 9780134765037
Author: Eric J. Simon, Jean L. Dickey, Jane B. Reece
Publisher: PEARSON
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Chapter 5, Problem 10SQ
Summary Introduction
Introduction:
The cell membrane is a thin sheet of lipid bilayer, which provides structure to the cell. Certain proteins are present in the phospholipid layer in embedded form, which regulate the entry and exit of the substances in and out of the cell. The movement of these substances is in both directions, which are controlled by the semi-permeable characteristic of the cell membrane.
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Regulating transport of substances in and out of the cell is the a. cell membrane. b. nuclear membrane. c. cytoplasm. d. nucleus.
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.
Glucose is often present in very low concentrations in environments populated by microorganisms. To import the maximum amount of available glucose, cells use
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Chapter 5 Solutions
Campbell Essential Biology (7th Edition)
Ch. 5 - Prob. 1SQCh. 5 - _____ is the capacity to perform work, while _____...Ch. 5 - The label on a candy bar says that it contains 150...Ch. 5 - Prob. 4SQCh. 5 - Prob. 5SQCh. 5 - Prob. 6SQCh. 5 - Prob. 7SQCh. 5 - Prob. 8SQCh. 5 - Prob. 9SQCh. 5 - Prob. 10SQ
Ch. 5 - Prob. 11IMTCh. 5 - For each statement, identify which major theme is...Ch. 5 - For each statement, identify which major theme is...Ch. 5 - HIV, the virus that causes AIDS, depends on an...Ch. 5 - Interpreting Data The graph illustrates two...Ch. 5 - Prob. 17BSCh. 5 - Nanotechnology devices can improve human health....Ch. 5 - Prob. 19BS
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- What variable(s) influence(s) whether a nonpolar molecule can move across a membrane by passive diffusion? a. The structure of the phospholipids bilayer b. The difference in concentration of the molecule across the membrane c. The presence of transport proteins in the membrane d. All of the choices are correct.arrow_forwardPeripheral proteins are membrane proteins that: ________________________________. a. attach to integral proteins b. insert into the plasma membrane c. include glycoproteins on intracellular surface d. a and b e. a and carrow_forwardThe passive, non-mediated movement of particles into or out of a cell following the particle’s concentration gradient is called A. osmosis B. vesicular transport C. filtration D. diffusion E. facilitated diffusion F. active transportarrow_forward
- Passive transport mechanism requires both the aid of proteins and the expenditure of cellular energy. While facilitated and active mechanism both needs proteins in order to transport drugs or ions across a membrane channel. * A. Both statements are INCORRECT B. Neither is CORRECT C. Only the 1st statement is INCORRECT D. Only the 2nd statement is CORRECTarrow_forwardIf a cell is non-selectively engulfing samples of extracellular fluid, for example to absorb nutrients, it will likely utilize a. exocytosis b. phagocytosis c. pinocytosis d. receptor-mediated endocytosisarrow_forwardWhich of the following can enter the cell by diffusion through the plasma membrane? A. salts B. glucose C. phospholipids D. carbon dioxidearrow_forward
- During passive transport, substances will move across a selectively permeable membrane until… explain why A. There is no longer any energy to be used B. All solutes reach the other side of the membrane C. There is no more room inside of the cell D. Equilibrium is reachedarrow_forwardProteins like albumin in the blood maintain water inside the blood vessels using A. Osmotic pressure B. Active diffusion C. Active transport D. Diffusionarrow_forwardA transport protein requires ATP to pump sodium ions across a membrane. This is a case of_______ . a. passive transport c. osmosis b. active transport d. facilitated diffusionarrow_forward
- Which of the following statements about active processes of membrane transport is true? a. cellular energy is required b. substances move against its concentration gradient c. all requires the aid of proteins during transport d. a and b e. a, b, and carrow_forwardChoose which substances can pass freely through the plasma membrane A. Gasses B. Charged molecules C. Hydrophobic molecules D. Lions E. Water D. ATParrow_forwardWhich of the following junctions allows for cytoplasm-to-cytoplasmcommunication between cells?a. adhesion junctions c. gap junctionsb. tight junctions d. None of these are correct.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