Prescott's Microbiology
10th Edition
ISBN: 9781259281594
Author: Joanne Willey, Linda Sherwood Adjunt Professor Lecturer, Christopher J. Woolverton Professor
Publisher: McGraw-Hill Education
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Chapter 5.3, Problem 1RIA
Summary Introduction
The plasma membrane is also called a cell membrane or cytoplasmic membrane. It is a network of protein and lipids that form the boundary among the outside of the cell and contents of cells. The major function of the plasma membrane is to protect the cell from its surrounding environment.
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Chapter 5 Solutions
Prescott's Microbiology
Ch. 5.1 - MICRO INQUIRY In addition to separating each...Ch. 5.1 - Prob. 1RIACh. 5.1 - Retrieve, Infer, Apply 2. Why is the...Ch. 5.3 - MICRO INQUIRY Which cytoskeletal filament is made...Ch. 5.3 - Prob. 1RIACh. 5.3 - Prob. 2RIACh. 5.3 - Prob. 3RIACh. 5.4 - MICRO INQUIRY Why must proteins be unfolded when...Ch. 5.4 - Prob. 1RIACh. 5.4 - Retrieve, Infer, Apply What is a proteasome? Why...
Ch. 5.4 - Prob. 3RIACh. 5.4 - Prob. 4RIACh. 5.4 - Describe the secretory pathway. To what...Ch. 5.4 - Prob. 6RIACh. 5.5 - Prob. 1MICh. 5.5 - MICRO INQUIRY Which subunit attaches to the rough...Ch. 5.5 - Prob. 1RIACh. 5.5 - Retrieve, Infer, Apply Suggest an explanation for...Ch. 5.5 - Prob. 3RIACh. 5.5 - Prob. 4RIACh. 5.6 - Prob. 1MICh. 5.6 - Describe the structure of aerobic mitochondria,...Ch. 5.6 - Prob. 2RIACh. 5.6 - Prob. 3RIACh. 5.7 - Prepare and label a diagram showing the detailed...Ch. 5.7 - Prob. 2RIACh. 5.7 - How do the structure and mechanism of action of...Ch. 5.8 - Retrieve, Infer, Apply Outline the major...Ch. 5.8 - Retrieve, Infer, Apply What characteristics make...Ch. 5 - Discuss the statement: The most obvious difference...Ch. 5 - Bacterial and archaeal cell size is limited by the...Ch. 5 - Prob. 3CHICh. 5 - Compare the mechanisms by which most eukaryotic...Ch. 5 - Prob. 5CHI
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- Which of the following statements about cell membranes is NOT true? A) Membranes are sheet like structures, only two molecules thick, that form closed boundaries between different compartments. B) Membranes consist mainly of lipids and proteins. C) Membranes are very rigid, impermeable structures Membrane lipids are small molecules that have both hydrophilic and hydrophobic moieties. D)arrow_forwardWhich of the following correctly describes micelles? spherical structures formed by amphipathic lipids such as fatty acids same as liposomes b) produced spontaneously by certain lipids, particularly glycerophospholipids c) composed of lipid bilayers that wrap around to form spherical vesicles consist of multi-layered structures of lipid bilayersarrow_forward1) Placing phospholipids in water will spontaneously form a spherical structure called a:Group of answer choices lumen ball sphingoid cytoskeleton liposome 2) Saturated fatty acidsGroup of answer choices Have each carbon "saturated" with hydrogen Have each carbon "saturated" with other carbons Have each carbon "saturated" with hydrogen and are solids at room temperature Are solids at room temperature Contain double bonds 3) In intestinal epithelia, glucose can be taken into cells against its concentration gradient. How can glucose be transported against its concentration gradient without the direct expenditure of ATP in intestinal epithelial cells?Group of answer choices It uses simple diffusion It uses the Glut1 transporter It uses the Glucose ATPase It uses the Glucose/Na+ symporter None of the above. Due to the Second Law of Thermodynamics, molecules cannot be moved against their concentration gradient.arrow_forward
- The plasma membrane is composed of a variety of lipid molecules. 1. Phosphatidylethanolamine 2. Phosphatidylcholine 3. Phosphatidylinositol 4. Phosphatidylserine 5. Sphingomyelin 6. Glycolipids 7. Cholesterol. Which lipids contain sugar molecules?arrow_forwardWhat is the basic structure of a biological membrane?arrow_forwardWhich of the following statements is (are) consistent with what is known about membranes? (a) A membrane consists of a layer of proteins sandwiched between two layers of lipids. (b) The compositions of the inner and outer lipid layers are the same in any individual membrane. (c) Membranes contain glycolipids and glycoproteins. (d) Lipid bilayers are an important component of membranes. (e) Covalent bonding takes place between lipids and proteins in most membranes.arrow_forward
- Which of the following statements is/are incorrect? 1. The cell membrane is purely hydrophobic. 2. Glycerophospholipids have a phosphate derivative group that is known as the polar head group. 3. The individual glycerophospholipid molecules that aggregate become covalently linked to each other to form a lipid bilayer. 4. The interfacial region of a lipid bilayer is polar due to the polar head groups of the lipid molecules that make up the bilayer. O 1 and 3 O 1 only O 2 and 4 O 3 only O 4 onlyarrow_forwardIn the cell membrane what are glycoproteins and what are their functions?arrow_forwardWe have seen that biological membranes have both lipid and protein components. How do these two parts combine to produce a biological membrane?arrow_forward
- Why should it make sense that a mitochondrion(a cellular organelle) is larger than a phospholipid molecule?arrow_forwardHow many layers of phospholipids make up the plasma membrane?arrow_forwardWhen a living cell, which has an outer membrane made of phospholipids, is placed in an aqueous (water) solution containing K+ and Na+ ions, one observes that these ions appear inside the cell. One would hypothesize that a) the phospho groups moved the ions through the Fatty Acids. b) the cell would swim away. c) H2O dissolved the membrane d) lipids had moved in and out of the cell through the water e) there must be a special mechanism moving the ions because of the properties of Fatty Acids.arrow_forward
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