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 6RQ
What is the primary function of carbohydrates attached to the exterior of cell membranes?
- identification of the cell
- flexibility of the membrane
- strengthening the membrane
- channels through membrane
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What is the primary function of carbohydrates attachedto the exterior of cell membranes?a. identification of the cellb. flexibility of the membranec. strengthening the membraned. channels through membrane
What is the role of cholesterol in the cell membrane?
It converts cis bonds of fatty acids to trans.
It allows for the formation of micelle structures.
It attracts to the polar phospholipid heads.
It reduces membrane fluidity.
Which 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 proteins
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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- Why is it advantageous for the cell membrane to be fluid in nature?arrow_forwardIn a lipid bilayer, the of all the lipid molecules are sandwiched between all of the __________. a. hydrophilic tails; hydrophobic heads b. hydrophilic heads; hydrophilic tails c. hydrophobic tails; hydrophilic heads d. hydrophobic heads; hydrophilic tailsarrow_forwardCell membranes consist mainly of a _________. a. carbohydrate bilayer and proteins b. protein bilayer and phospholipids c. phospholipid bilayer and proteinsarrow_forward
- Which plasma membrane component can be either found on its surface or embedded in the membrane structure? a. protein b. cholesterol c. carbohydrate d. phospholipidarrow_forwardWhich of the following cell membrane proteins allows movement of molecules? Group of answer choices channel proteins receptor protein structural proteins glycoproteinarrow_forwardWhich of the following subcellular structures facilitates intracellular transport? lysosomes peroxisomes vesicles ribosomesarrow_forward
- Which of the following cellular activity or function requires the presence of carbohydrates on membranes? for the transport of ions from outside to inside of the cell formation of cell junctions for N- or O-glycosylation cell-cell recognitionarrow_forwardWhat is the primary molecule of the cell membranearrow_forwardWhat happens if plasma membrane fails to maintain optimal fluidity?• Describe structure/function of lipid raftsarrow_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 would require a protein for movement into and out of the cell? Glucose Carbon dioxide Methane Acetonearrow_forwardWhat kinds of molecules pass through a cell membrane most easily? small and hydrophobic large and hydrophobic ionic large polararrow_forward
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