Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 5, Problem 4RQ
Which plasma membrane component can be either found on its surface or embedded in the membrane structure?
- protein
- cholesterol
- carbohydrate
- phospholipid
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Students have asked these similar questions
Which of the following would you expect to be freely permeable through a pure lipid bilayer?
molecular nitrogen
fructose
ATP
sodium ions
helium
glucose
glycine
carbon dioxide
You will create a hand drawn, 2-dimensional, labelled diagram of the plasma membrane (not a 3D diagram). Label the following structures in your diagram:
A phospholipid
A peripheral protein
An integral protein
A cholesterol
Intracellular and extracellular portion of the membrane
Hydrophobic and hydrophilic areas
Also include a detailed drawing of a single phospholipid labeling its component
Which of the following statements about a typical plasma membrane is correct?
The hydrophilic interior of the membrane is composed primarily of the fatty acid tails of the phospholipids.
Carbohydrates on the membrane surface are important in determing the overall bilayer structure.
Phospholipids are the primary component that determines which solute can cross the plasma membrane.
The two sides of the plasma membrane have different lipid and protein composition.
The plasma membrane is covalently linked network of phospholipids and proteins that controls the movement of solutes into and out of a cell.
Chapter 5 Solutions
Biology 2e
Ch. 5 - Figure 5.12 A doctor injects a patient with what...Ch. 5 - Figure 5.16 Injecting a potassium solution into a...Ch. 5 - Figure 5.19 If the pH outside the cell decreases,...Ch. 5 - Which plasma membrane component can be either...Ch. 5 - Which characteristic of a phospholipid contributes...Ch. 5 - What is the primary function of carbohydrates...Ch. 5 - A scientist compares the plasma membrane...Ch. 5 - Water moves via osmosis. throughout the cytoplasm...Ch. 5 - The principal force driving movement in diffusion...Ch. 5 - What problem is faced by organisms that live in...
Ch. 5 - In which situation would passive transport not use...Ch. 5 - Active transport must function continuously...Ch. 5 - How does the sodium-potassium pump make the...Ch. 5 - What is the combination of an electrical gradient...Ch. 5 - What happens to the membrane of a vesicle after...Ch. 5 - Which transport mechanism can bring whole cells...Ch. 5 - In what important way does receptor-mediated...Ch. 5 - Many viruses enter host cells through receptor-...Ch. 5 - Which of the following organelles relies on...Ch. 5 - Imagine a cell can perform exocytosis, but only...Ch. 5 - Why is it advantageous for the cell membrane to be...Ch. 5 - Why do phospholipids rend to spontaneously orient...Ch. 5 - How can a cell use an extracellular peripheral...Ch. 5 - Discuss why the following affect the rate of...Ch. 5 - Why does water move through a membrane?Ch. 5 - Both of the regular intravenous solutions...Ch. 5 - Describe two ways that decreasing temperature...Ch. 5 - A cell develops a mutation in its potassium...Ch. 5 - Where does the cell get energy for active...Ch. 5 - How does the sodium-potassium pump contribute to...Ch. 5 - Glucose from digested food enters intestinal...Ch. 5 - The sodium/calcium exchanger (NCX) transports...Ch. 5 - Why is it important that there are different types...Ch. 5 - Why do ions have a difficult time getting through...
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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
- Cell membranes consist mainly of a _________. a. carbohydrate bilayer and proteins b. protein bilayer and phospholipids c. phospholipid bilayer and proteinsarrow_forwardThe tails of the phospholipids of the plasma membrane are composed of _____ and are _____? a. phosphate groups; hydrophobic b. fatty acid groups; hydrophilic c. phosphate groups; hydrophilic d. fatty acid groups; hydrophobicarrow_forwardWhich of the following components are embedded across the phospholipid bilayer? Group of answer choices peripheral proteins carbohydrates integral proteins cholesterolarrow_forward
- According to the fluid mosaic model of cell membranes, which of the following is a true statement about membrane phospholipids? They frequently flip-flop from one side of the membrane to the other. They have hydrophilic tails in the interior of the membrane. They can move laterally along the plane of the membrane. They are free to depart from the membrane and dissolve in the surrounding solution.arrow_forwardWhich of the following molecules would you expect to diffuse through the lipid bilayer of a plasma membrane most rapidly? Na+ An amino acid Starch Glucose O2arrow_forwardWhich of the following molecules is more likely to diffuse through a synthetic lipid bilayer (i.e. a lipid bilayer without transmembrane transporters). Cl- ethanolarrow_forward
- What is the cause of the impermeability of plasma membranes to water-soluble molecules? Group of answer choices the nonpolar nature of water presence of phospholipid bilayer with a nonpolar/hydrophobic interior region presence of transmembrane proteins the presence of cellulosearrow_forwardWhich of the following lipid components of the eukaryotic plasma membrane would be associated with the highest membrane fluidity? a triglyceride with unbranched, saturated, short-chain fatty acids a monoglyceride with unbranched, saturated, short-chain fatty acids a triglyceride with unbranched, saturated, long-chain fatty acids a monoglyceride with branched, unsaturated, short-chain fatty acids a diglyceride with unbranched, saturated, long-chain fatty acidsarrow_forwardWhich of the following components is attached to lipids and proteins on the extracellular side of the membrane? Group of answer choices cholesterol peripheral proteins carbohydrates integral proteinsarrow_forward
- The plasma membrane consists mainly of: A Proteins embedded in a carbohydrate bilayer B Phospholipids embedded in a protein bilayer C Proteins embedded in a phospholipid bilayer D Proteins embedded in a polymer of glucose moleculesarrow_forwardAlthough lipids are largely responsible for providing and maintaining the structure of the Ven membrane, most of the membrane's functions are due to the proteins that are present in it. Membrane proteins can be classified as integral or peripheral, depending on how they are Posiioned in the phospholipid bilaver. Based on figure 12, differentiate integral and peripheral proteins. Write your answer on the table below. Table 18: Difference Between Integral and Peripheral Membrane Proteins Integral Proteins Peripheral Proteinsarrow_forwardTwo theories of membrane structure are discussed below. Unit Membrane Model Phospholipid molecules are the most abundant type of lipids in cell membranes. Each consists of a nonpolar, hydrophobic tail, and a polar, hydrophilic head. The phospholipid chains orient themselves to form a bilayer with the tails pointed inward and the hydrophilic heads lined up on both sides of the bilayer. An extended monomolecular layer of protein coats both the outside of the membrane and the inside of the bilayer, but the protein does not penetrate the bilayer. When thin slices of membranes were examined with an electron microscope, three layers were seen: two electron-dense layers, with one wider layer between them. It was believed that the electron-dense layers represented proteins, and the lighter area represented lipids. Fluid Mosaic Model The structure of the fluid mosaic membrane is a bilayer of phospholipid molecules with proteins inserted into the bilayer. Hydrophilic regions of both the lipids…arrow_forward
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