Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 5.5, Problem 1TYK
Summary Introduction
Introduction:
The cells inside the animal’s body are not directly connected with each other. The plasma membrane of their cells contains some junctions that help the animal cells to make connections with each other.
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Which of the followings is not true about the function of the Tight Junctions? (LO- K8)
They hold the cells together
They act as a barrier
They help maintain cell polarity
They prevent lateral diffusion of proteins, ions, molecules
They play an important role in maintaining the blood brain barrier
They connect the adjacent cells intercellularly to the intermediate cytoskeletal filaments
Which of the following stimulus or stimuli may cause protein channels involved in membrane transport to open or close:
Change of voltage across the membrane.
Mechanical stress.
Ligand binding.
All of the above.
None of the above.
Which of the following is a characteristic feature of a ion channel protein in a plasma membrane?
It is specific for a certain type of ion.
It works against diffusion.
It is a peripheral membrane protein.
Chapter 5 Solutions
Principles of Biology
Ch. 5.1 - Which of the following is not a characteristic of...Ch. 5.1 - Prob. 2TYKCh. 5.2 - In an animal cell, how can changes in lipid...Ch. 5.2 - Prob. 2CCCh. 5.2 - Prob. 1TYKCh. 5.2 - Which of the following changes would make a...Ch. 5.3 - Prob. 1BCCh. 5.3 - Prob. 1CCCh. 5.3 - Prob. 2BCCh. 5.3 - Prob. 2CC
Ch. 5.3 - Prob. 1TYKCh. 5.3 - Prob. 2TYKCh. 5.4 - Prob. 1CCCh. 5.4 - Prob. 1TYKCh. 5.4 - Prob. 2TYKCh. 5.5 - Prob. 1BCCh. 5.5 - Prob. 1TYKCh. 5.6 - Prob. 1CCCh. 5.6 - A form of endocytosis that involves the formation...Ch. 5.7 - Prob. 1CCCh. 5.7 - Prob. 2CCCh. 5.7 - Prob. 1BCCh. 5.7 - Anchoring junctions that adhere adjacent animal...Ch. 5 - Which of the following statements best describes...Ch. 5 - Which of the following events in a biological...Ch. 5 - Prob. 3TYCh. 5 - Carbohydrates of the plasma membrane are bonded to...Ch. 5 - Which of the following movements would not be an...Ch. 5 - Prob. 6TYCh. 5 - Prob. 7TYCh. 5 - What features of a membrane are a major...Ch. 5 - Prob. 9TYCh. 5 - Large particles can be brought into the cell by...Ch. 5 - With your textbook closed, draw and describe the...Ch. 5 - Describe two different ways that integral membrane...Ch. 5 - A principle of biology is that living organisms...Ch. 5 - Prob. 1CBQCh. 5 - With regard to bringing solutes into the cell...
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- Muscular dystrophy is caused by a mutation in dystrophy, and intracellular protein that binds to the cytoskeleton. Dystropin also binds to _____, which is found in plasma membrane of the cell and binds the extracellular matrix. Actin filament Gap junction Integrin Cadherin Tight junctionarrow_forwardWhich of the following regarding the sodium potassium pump is FALSE? It tends to be found on the apical plasma membrane of polarized cells It transports three sodium ions to the outside of the cell It transports two potassium ions to the inside of the cell. It helps to maintain unequal distribution of ions across the plasma membranearrow_forwardWhen the membrane is at rest, the concentration gradient tends to draw sodium ions ___ the cell, and the electrical gradient draws them ___ the cell. a. into . . . out of b. into . . . into c. out of . . . into d. out of . . . out ofarrow_forward
- Actin filaments are anchored at tight junctions desmosomes gap junction focal adhesion complexesarrow_forwardWhen the nerves deliver a signal to contract, Ca++ (calcium ions) rush into the cell. The calcium ion influx causes specialized fibers to contract. Afterward, calcium ions are pumped out of the cell by calcium ATPases. What transport type(s) is occuring?s antiporter only ion gated transport followed by active transport active transport only ion gated transport only active transport followed by ion gated transportarrow_forwardWhich of the following are part of adherens junctions? a. Anchor proteins b. Actin filament c. Cadherin dimers d. A and C e. All of the abovearrow_forward
- The neuron membrane includesa lipid bilayer.channel proteins.signal proteins.all of the aboveboth A and Barrow_forwardWhy are ion channels necessary to transport ions into or out of a cell? a. Ions are too large to diffuse through the membrane. b. Ions are charged particles and cannot diffuse through the hydrophobic interior of the membrane. c. Ions do not need ion channels to move through the membrane. d. Ions bind to carrier proteins in the bloodstream, which must be removed before transport into the cell.arrow_forwardThere are several membrane-bound organelles in cells (e.g. nuclei, mitochondria, endoplasmic reticulum) that can also have ion channels in their membranes. Sketch an electrical circuit model of a cell that expresses sodium, calcium, and chloride ion channels in its cellular membrane and calcium and chloride ion channels in its nuclear envelope membrane.arrow_forward
- if a cell has a net positive charge inside and there is a net negative charge outside the cell, which of the following is correct (if the membrane is permeable to each substance and the concentration of each is the same inside and outside the cell)? a. negative ions will move into the cell b. positive ions will move into the cell c. neutral ions will move into the cell d. negative ions will move our of the cellarrow_forwardWhich of the following does not contribute to the selective permeability of a biological membrane?a. specificity of the carrier proteins in the membraneb. selectivity of channel proteins in the membranec. hydrophobic barrier of the phospholipid bilayerd. hydrogen bond formation between water and phosphate grouparrow_forward"Tight junctions perform two distinct functions: they seal the space between cells to restrict paracellular flow and they fence off plasma membrane domains to prevent the mixing of apical and basolateral membrane proteins" is true or false.arrow_forward
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