Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 5, Problem 8TY
Summary Introduction
Introduction: Selective permeability of a cell membrane refers to the selective nature of the membrane in allowing entry and exit of substances through it. The selective permeability acts as a barrier for outflow and inflow of certain molecules. It conserves the cytoplasm of the cell and helps in the sustenance of vital biochemical processes inside the cell. Hence cell membrane can decide upon which of the molecules to pass through it.
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Which of the following does NOT contribute to the selective permeability of a biological membrane?
a. Specificity of the carrier proteins in the membrane
b. Selectivity of channel proteins in the membrane
c. Hydrophobic barrier of the phospholipid bilayer
d. Hydrogen bond formation between water and phosphate groups
What features of a membrane are major contributors to its selectivepermeability?a. phospholipid bilayerb. transport proteinsc. glycolipids on the outer surface of the membraned. peripheral membrane proteinse. both a and b
The process of “active transport" through a membrane may be described by
which of the following?
A. the movement of ions and small molecules away from regions where they
are in high concentration.
B. the use of energy from ATP to move ions and small molecules into regions
where they are in lower concentration.
C. the plasma membrane engulfs the substance and moves it through the
membrane.
D. the use of energy from ATP to move ions and small molecules against their
concentration gradient.
Chapter 5 Solutions
Biology
Ch. 5.1 - Core Skill: Modeling The goal of this modeling...Ch. 5.2 - Prob. 1CSCh. 5.3 - Prob. 1CCCh. 5.3 - Prob. 2CCCh. 5.4 - Prob. 1CSCh. 5.4 - Prob. 2CSCh. 5.4 - Lets suppose the inside of a cell has a solute...Ch. 5.5 - What is the purpose of gating?Ch. 5.5 - Prob. 1EQCh. 5.5 - Prob. 2EQ
Ch. 5.5 - Prob. 3EQCh. 5.6 - What is the function of the protein coat?Ch. 5 - Prob. 1TYCh. 5 - Which of the following events can never be...Ch. 5 - Lets suppose an insect, which doesnt maintain a...Ch. 5 - Prob. 4TYCh. 5 - Prob. 5TYCh. 5 - Prob. 6TYCh. 5 - Prob. 7TYCh. 5 - Prob. 8TYCh. 5 - Prob. 9TYCh. 5 - Large particles or large volumes of fluid can be...Ch. 5 - With your textbook closed, draw and describe the...Ch. 5 - Prob. 2CQCh. 5 - Prob. 3CQCh. 5 - Prob. 1COQCh. 5 - With regard to bringing solutes into the cell...
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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
- Which of the following is not a function of the extracellular matrix Select one: A. Prevents the loss of water when cells are placed in a hypertonic solution. B. Assists in the movement of substances across the plasma membrane. C. Has numerous functions that affect the shape and activities of the cell that produced it. D. Takes place in reception of moleculesarrow_forwardWhich statement about the plasma membrane is INCORRECT Select one : a It is composed of two layers of glycoprotein molecules . b. The plasma membranes of adjacent cells may be held together by desmosomes . . It contains receptors for specific molecules d . Gap junctions may be present between adjacent cells eltis selectively permeablearrow_forwardChoose which substances cannot pass through the phospholipid bilayer of the plasma membrane. A. Gasses B. Charged molecules C. Hydrophobic molecules D. Lions E. Water F. ATParrow_forward
- Which of the following statements regarding the selective permeability of the lipid bilayer is FALSE? A. the permeability of the lipid bilayer to different substances varies. B. The lipid bilayer component of the plasma membrane is highly permeable to nonvolatile molecules such as oxygen. C. The more hydrophobic or lipid soluble a substance is, the greater the lipid bilayers permeability to that substance. D. The lipid bilayer component of the plasma membrane is moderately permeable to ions and large, uncharged polar moleculesarrow_forwardWhich of the following describes integral membraneproteins?a. They permit water movement only into or out of thecell.b. They transport only large proteins into the cell.c. They extend across the phospholipid bilayer.d. They are attached to the external plasma membranesurfacearrow_forwardIndicate whether the following statements are true or false. If a statement is false, explain why it is false. a. All types of cells contain cell walls, but only some cell types possess plasma membranes. b. The distribution of specific lipids to the inner and outer leaflet is asymmetrical, or biased, in plasma membranes. C. Lateral diffusion is the movement of lipids from one layer of the membrane to the other. d. Fatty acids tails are used to embed integral, transmembrane proteins in the plasma membrane.arrow_forward
- 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_forwardThe following is true about lipif layer of plasma membrane EXCEPT: A. Back to back layers made up of phospolipids B. Contains membrane proteins that function to transport molecules C. Composed of phospolopids that have polar tail and nonpolar head D. Allows molecules to either pass directly through the layer or through the uee of channels and transport proteinsarrow_forwardWhich of the following is Not a function of the plasma membrane proteins? A. Acting as enzymes B. Acting as channels C. Acting as carriers D. Stabilizing temperaturearrow_forward
- which of the following statements is correct about the movement of water across a plasma membrane a. it cannot pass through any ion channels b. it moves through the membrane via mediated transport c. even though it a polar molecule, it moves readily through the nonpolar lipid bilayer d. artificial lipid membranes are impermeable to waterarrow_forwardWhat does asymmetry of the membrane refer to? O A. Differences in the arrangements and structures of the phospholipids in the bilayer. B. Differences in the arrangements, structures and kinds of proteins in the bilayer. C. Differences in the occurrence of carbohydrates in glycosylated proteins and lipids in the bilayer. D. Both A and B O E. All of these.arrow_forwardWhich of the statement about cell membrane is not true? * It contains protein molecules embedded in the lipid bilayer B. It is a differentially permeable membrane. C. It contains charged pores thus ions being O charged particles cross cell membrane much easier than neutral particles. D. It may get infolded to engulf solid or liquid material.arrow_forward
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