Biology Today and Tomorrow without Physiology (MindTap Course List)
5th Edition
ISBN: 9781305117396
Author: Cecie Starr, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 3, Problem 3DID
Summary Introduction
To explain: The place where the CFTR protein is held up in the cells of CF-affected patient.
Introduction: Cystic fibrosis transmembrane conductance regulator (CFTR) is a plasma membrane transport protein encoded by the gene CFTR. CFTR protein is present in a few copies in the people affected by cystic fibrosis (CF). Thus, the amount of chloride ions and water that leave the cell become very less. This results in thick, dry mucus and the airways to the lungs get clogged. Chronic lung infections and difficulty in breathing are some of the symptoms associated with CF.
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Chapter 3 Solutions
Biology Today and Tomorrow without Physiology (MindTap Course List)
Ch. 3 - Prob. 1FIOCh. 3 - Organelles and Cystic Fibrosis A plasma membrane...Ch. 3 - Organelles and Cystic Fibrosis A plasma membrane...Ch. 3 - Prob. 3DIDCh. 3 - All cells have these three things in common: a....Ch. 3 - Unlike eukaryotic cells, prokaryotic cells...Ch. 3 - Every cell is descended from another cell. This...Ch. 3 - Prob. 4SQCh. 3 - True or false? Some protists start out life with...Ch. 3 - Cell membranes consist mainly of ________ and...
Ch. 3 - Prob. 7SQCh. 3 - In a lipid bilayer, the of all the lipid molecules...Ch. 3 - The main function of the endomembrane system is...Ch. 3 - Enzymes contained in __________ break down...Ch. 3 - Put the following structures in order according to...Ch. 3 - No animal cell has a ______. a. plasma membrane b....Ch. 3 - Prob. 13SQCh. 3 - Prob. 14SQCh. 3 - Match each cell component with its main function.Ch. 3 - In a classic episode of Star Trek, a gigantic...Ch. 3 - Prob. 2CTCh. 3 - What type of micrograph is shown below? Is the...
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- Organelles and Cystic Fibrosis A plasma membrane transport protein called CFTR moves chloride ions out of cells lining cavities and ducts of the lungs, liver, pancreas, intestines, and reproductive system. Water that follows the ions creates a thin film that allows mucus to slide easily through these structures. People with cystic fibrosis (CF) have too few copies of the CFTR protein in the plasma membranes of their cells. Not enough chloride ions leave the cells, and so not enough water leaves them either. The result is thick, dry mucus that clogs the airways to the lungs and other passages. Symptoms include difficulty breathing and chronic lung infections. In 2000, researchers tracked the cellular location of the CFTR protein as it was being produced in cells from people with CF (Figure 3.13). Figure 3.13 Cellular location of the CFTR protein. Graph compares the amounts of CFTR protein found in endoplasmic reticulum, vesicles travel in g from ER to Golgi, and Golgi bodies in CF cells and normal cells. Which organelle contains the least amount of CFTR protein in normal cells? In CF cells?arrow_forwardNo animal cell has a ______. a. plasma membrane b. flagellum c. lysosome d. cell wallarrow_forwardIn the fluid mosaic model: plasma membrane proteins orient their hydrophilic sides toward the internal bilayer. phospholipids often flip-flop between the inner and outer layers. the mosaic refers to proteins attached to the underlying cytoskeleton. the fluid refers to the phospholipid bilayer. the mosaic refers to the symmetry of the internal membrane proteins and sterols.arrow_forward
- The 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_forwardAll cells have these three things in common: a. cytoplasm, DNA, and organelles with membranes b. a plasma membrane, DNA, and a nuclear envelope c. cytoplasm, DNA, and a plasma membrane d. a cell wall, cytoplasm, and DNAarrow_forwardCell membranes consist mainly of a _________. a. carbohydrate bilayer and proteins b. protein bilayer and phospholipids c. phospholipid bilayer and proteinsarrow_forward
- Eukaryotic cells contain many compartmentalized organelles. Label the organelles in this eukaryotic cell.arrow_forwardGeneral functions of the cytoskeleton maintains the cell shape movement of proteins and lipids to their repective destinations organize the organelles within the cell help form the late endosomes from the lysosomes I, II, III only ??? I, II, III, IV I and III only II and III onlyarrow_forwardThe plasma membrane is composed of a phospholipid bilayer with embedded protein. What is one of the functions of the embedded protein.arrow_forward
- . In the lungs, there are steep concentration gradients for oxygen and carbon dioxide molecules such that large numbers of these molecules move across the plasma membrane of the cells that line the lungs. These molecules pass through the plasma membranes by simple diffusion. This process is fast and efficient. Would this process be just as efficient if the oxygen and carbon dioxide molecules passed through the membranes by facilitated diffusion? Why or why not?arrow_forwardIf the phosphoglycerolipids constituting the framework of the plasma membrane, these are what give it its functions. There are two main classes of membrane proteins: intramembrane proteins and peripheral protections. What is the distinction between intramembrane and peripheral proteins.arrow_forwardWhich two processes must be balanced (one process exactly equal to the other) in order to maintain a constant number of phospholipids in a cell’s plasma membrane (neither increasing nor decreasing)? receptor-mediated endocytosis and phagocytosis “cell eating” and pinocytosis “cell drinking” and phagocytosis exocytosis and endocytosis phagocytosis and pinocytosisarrow_forward
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