Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Textbook Question
Chapter 4.5, Problem 3TC
Why is it advantageous for all cellular membranes to have a fundamentally similar composition?
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Which of the following describes the plasma membrane?
1) phospholipid bilayer surrounding the cell
2) a membrane composed of tiny shelves or cristae
3) single-layered membrane that surrounds the nucleus of the cell
4) double layer of protein enclosing the plasma
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)
Which of the following statements describes the function of plasma membranes?
I. define boundaries of the cell and its organelles and act as permeability barriers
II. sites for specific biological and chemical functions
III. possess transport proteins that regulate the movement of substances into and out of the cell and its organelles
IV. contain protein molecules that act as receptors to detect external signals
V. provide mechanisms for cell-to-cell contact, adhesion, and communication
Chapter 4 Solutions
Biology
Ch. 4.1 - trace the historical development of the cell...Ch. 4.1 - list the three principles of the cell theory?Ch. 4.2 - Prob. 1TCCh. 4.2 - Prob. 1CYLCh. 4.2 - Prob. 2CYLCh. 4.3 - Prob. 1CSCCh. 4.3 - describe the structure and features shared by all...Ch. 4.3 - distinguish prokaryotic from eukaryotic cells?Ch. 4.3 - Prob. 3CYLCh. 4.4 - describe the structure and function of the major...
Ch. 4.4 - Prob. 2CYLCh. 4.5 - Prob. 1CSCCh. 4.5 - Why do the chromosomes in chromatin condense in...Ch. 4.5 - Using Fig. E4 4. plot the changes in each country...Ch. 4.5 - Why is it advantageous for all cellular membranes...Ch. 4.5 - Why is it important for lysosomal enzymes to be...Ch. 4.5 - Over the years, scientists have wondered how many...Ch. 4.5 - What problems would arise if the trachea were...Ch. 4.5 - Prob. 1CYLCh. 4.5 - list the structures found in animal but not plant...Ch. 4.5 - describe the structure and function of each major...Ch. 4.5 - Prob. 1CTCh. 4 - Which of the following is/are found only in...Ch. 4 - Which of the following is not a function of the...Ch. 4 - Prob. 3MCCh. 4 - Prob. 4MCCh. 4 - Prob. 5MCCh. 4 - Prob. 1FIBCh. 4 - Prob. 2FIBCh. 4 - Prob. 3FIBCh. 4 - Prob. 4FIBCh. 4 - Prob. 5FIBCh. 4 - Two organelles that are believed to have evolved...Ch. 4 - Prob. 7FIBCh. 4 - Prob. 1RQCh. 4 - Prob. 2RQCh. 4 - Prob. 3RQCh. 4 - Describe the nucleus and the function of each of...Ch. 4 - Prob. 5RQCh. 4 - Prob. 6RQCh. 4 - Describe the structure and function of the...Ch. 4 - Prob. 8RQCh. 4 - Prob. 9RQCh. 4 - List the structures of bacterial cells that have...Ch. 4 - Prob. 1ACCh. 4 - Prob. 2ACCh. 4 - What problems would an enormous round cell...
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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
- Why are membranes so critical to cell function?arrow_forwardWhy is the cell membrane not an absolute barrier between the cytoplasm and the external environment?arrow_forwardWhich of the following statements describes the function of plasma membranes? I. define the boundaries of the cell and its organelles and act as permeability barriers II. sites for specific biological and chemical functions II. possess transport proteins that regulate the movement of substances into and out of the cell and its organelles IV. contain protein molecules that act as receptors to detect external signals V. provide mechanisms for cell-to-cell contact, adhesion, and communication I and III BI, III, IV © 1, II, IV, V D I, II, III, IV, varrow_forward
- Which of the following best describes a biological membrane? two layers of phospholipids with proteins embedded between the two layers two layers of phospholipids (with opposite orientations of the phospholipids in each layer) with each layer covered on the outside with proteins two layers of phospholipids with proteins either spanning the layers or on the surface of the layers a fluid structure in which phospholipids and proteins move freely between sides of the membrane a mixture of covalently linked phospholipids and proteins that determines which solutes can cross the membrane and which cannotarrow_forwardWhat basic structure do all cellular membranes share?arrow_forwardThe phospholipid portion of biological membranes is referred to as "selectively permeable". What does this term mean? What types of substances can cross the phospholipid bilayer? What types cannot?arrow_forward
- What is a major component of all cellular membranes?arrow_forwardWhat is unique about plasma membrane? Why is it advantageous for the plasma membrane to be fluid in nature? How does the sodium-potassium pump contribute to the net negative charge of the interior of the cell? In medicine, why is it important to administer only isotonic intravenous solutions to patients? Example of isotonic IV fluids are normal saline and lactated Ringer’s solution. Potassium is a necessary nutrient in order to maintain the function of our cells. What would occur to a person that is deficient in potassium?arrow_forwardWhich of the following statement best describes the chemical composition of cytoplasmic membrane? Cytoplasmic membrane is bilayer of phospholipids embedded with proteins Cytoplasmic membrane is composed of two layers- one layer of phospholipids and one layer of proteins. Cytoplasmic membrane is bilayer of proteins embedded with phospholipidsarrow_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_forwardWe have seen that biological membranes have both lipid and protein components. How do these two parts combine to produce a biological membrane?arrow_forwardWhat would probably happen to the plasma membrane of a cell if it were composed of hydrophilic molecules such as carbohydrates?arrow_forward
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