Biology
10th Edition
ISBN: 9780073383071
Author: Raven
Publisher: MCGRAW-HILL HIGHER EDUCATION
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 5, Problem 4U
The specific function of a membrane within a cell is determined by the
a. degree of saturation of the fatty acids within the phospholipid bilayer.
b. location of the membrane within the cell.
c. presence of lipid rafts and cholesterol.
d. type and number of membrane proteins.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Which of the following does not apply to lipid asymmetry?
a.It arises in the endoplasmic reticulum.
b.It arises due to the flip-flop movement of specific phospholipids to the cytosolic monolayer.
c.It is preserved throughout vesicular transport.
d.It depends on the activity of flippase.
Which of the following statements is CORRECT about the fatty acid residues in membrane lipids?
A. Whole swathes of the membrane have higher saturated residues to increase the overall surface tension.
B. There are more unsaturated units to maintain the fluidity of the structure at all environmental temperatures.
C. More unsaturated residues are present to increase the melting point of the membrane making it resilient.
D. Larger quantities of saturated units are present to maximize stacking and provide effective barrier capacity.
Which of the following is NOT a function of membrane proteins?
a.Regulate the passage of ions
b.Act as carrier molecules for various solutes
c.Act as anchors or stabilizers for the cell membrane
d.Storage of cellular nutrients
Chapter 5 Solutions
Biology
Ch. 5 - The fluid mosaic model of the membrane describes...Ch. 5 - What chemical property characterizes the interior...Ch. 5 - The transmembrane domain of an integral membrane...Ch. 5 - The specific function of a membrane within a cell...Ch. 5 - The movement of water across a membrane is...Ch. 5 - If a cell is in an isotonic environment, then a....Ch. 5 - Which of the following is NOT a mechanism for...Ch. 5 - A bacterial cell that can alter the composition of...Ch. 5 - What variable(s) influence(s) whether a nonpolar...Ch. 5 - Which of the following does NOT contribute to the...
Knowledge Booster
Learn more about
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
- Mark the following statements about the plasma membrane as true or false. If a statement is false, correct it to make a true statement. a. _____ Integral membrane proteins generally span the width of the plasma membrane, whereas peripheral proteins are found on only one side of the membrane. b. _____ Cholesterol provides the plasma membrane with stability in the face of changing ion concentrations . c. _____ Membrane cholesterol is vitally important for cell-cell recognition. d. _____ Membrane proteins often function as channels or carriers. e. _____ The overall structure of the plasma membrane is a mosaic with the components locked tightly in placearrow_forwardWhich 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_forwardMembrane proteins perform the following functions EXCEPT one. Which One? A. form the glycocalyx B. act as receptor proteins C. form pores to allow the passage of small solutes D. behave as enzymes.arrow_forward
- Which 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_forwardDescribe the properties of the three classes of membrane proteins (integral, peripheral, and lipid-anchored) along: A. differences from each other B. variation among themselvesarrow_forwardWhich of the following statements about cellular membranes is/are FALSE? A. Only lipids move Within the membrane, while the proteins are anchored and immobile. B. Membranes are composed of lipids and proteins. C. Substances may be transported across membranes by active transport, facilitated transport or diffusion. D. Membrane proteins are classified as integral or peripheral, upon their functionarrow_forward
- Consider the following diagram of the cell membrane. Which of the statements is NOT true regarding the cell membrane? Group of answer choices a. Proteins and carbohydrates are also components of the cell membrane. b. Certain phospholipids and proteins on the outer surface of the cell membrane are attached to carbohydrates. c. Some carbohydrates extend through the entire lipid bilayer and appear on both surfaces of the membrane d. Some of the proteins embedded in the cell membrane constitute channels (passage canals).arrow_forwardFor biological membranes, which of the following statement is NOT true? A. The phospholipid bilayer is a fluid matrix. B. Protein can be anchored to the membrane by covalently linked lipid chains. C. Proteins can move laterally across the membrane. D. For organisms living in cold temperature, their cell membranes contain more triacylglycerols. E. Transverse motion of lipid molecules can occur occasionally. Enzyme lowers when... A. The energy difference between the substrate and the transition state B. The energy difference between the product and the transition state C. Both A and B D. Neither A nor Barrow_forwardIn the plasma membrane, form(s) the lipid bilayer,determine(s) the fluid nature of the membrane, andmainly determine(s) the function of the membrane.a. phospholipids, cholesterol, proteinsb. phospholipids, proteins, cholesterolc. proteins, cholesterol, phospholipidsd. cholesterol, phospholipids, proteinse. cholesterol, proteins, phospholipidsarrow_forward
- Integral proteins associate with the membrane through A. covalent attachment to lipids. B. covalent attachment to lipid anchors such as palmitoyl groups. C. hydrophobic interactions with lipids. D. interactions with carbohydrates attached to lipids.arrow_forwardThe presence of cholesterol regulates the in animal cells. Ca. fluidity of a membrane b. polarity of a membrane c. structure of a membranearrow_forwardAccording to the fluid-mosaic model of the plasma membrane, a.protein and phospholipids form a regular, repeating structure. b.the membrane is a rigid structure. c.phospholipids form a double layer, with the polar parts facing each other. d.proteins are free to move within a double layer of phospholipids.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
The Cell Membrane; Author: The Organic Chemistry Tutor;https://www.youtube.com/watch?v=AsffT7XIXbA;License: Standard youtube license