EBK BIOLOGY
4th Edition
ISBN: 8220102797376
Author: BROOKER
Publisher: YUZU
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Chapter 10, Problem 6TY
Summary Introduction
Introduction:
In a multicellular organism, cells are linked to each other by specialized structures called cell junctions. Three types of junctions found between cells in animals are anchoring junctions, tight junctions, and gap junctions. Plant cells are connected by middle lamella and plasmodesmata.
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The difference between a gap junction and plasmodesmata is…
Select one:
a. Gap junctions are formed by microfilaments while plasmodesmata are formed by membrane
b. Gap junctions are anchoring junctions while plasmodesmata are protein junctions.
c. Gap junctions are formed by proteins making pores between two animal cells while plasmodesmata are formed due to incomplete cell division of membranes from adjoining plant cells.
Which of the following statements about plasmodesmata is true? a. They prevent cytoplasm from passing between cells. b. They are important in the formation of tight junctions. c. They may float freely in the cytoplasm or be membrane-bound. d. They allow adjacent plant cells to communicate with each other.
Diseased animal cells may produce molecules thatactivate death cascades to kill the cells in a controlledmanner. Why would neighboring healthy cells also die?a. The death molecule is passed throughdesmosomes.b. The death molecule is passed throughplasmodesmata.c. The death molecule disrupts the extracellularmatrix.d. The death molecule passes through gap junctions.
Chapter 10 Solutions
EBK BIOLOGY
Ch. 10.1 - What are the four functions of the ECM in animals?Ch. 10.1 - Prob. 2CCCh. 10.1 - Prob. 3CCCh. 10.1 - What structural feature of GAGs gives the ECM a...Ch. 10.1 - Prob. 5CCCh. 10.2 - Prob. 1CCCh. 10.2 - Prob. 2CCCh. 10.2 - Prob. 1BCCh. 10.2 - Prob. 3CCCh. 10.2 - Prob. 1EQ
Ch. 10.2 - Cell Junctions CoreSKILL Explain the experimental...Ch. 10.2 - Prob. 3EQCh. 10.2 - Prob. 4CCCh. 10.2 - Prob. 2BCCh. 10.3 - Tissues Concept Check: Which of the four general...Ch. 10.3 - Prob. 2CCCh. 10 - The function of the extracellular matrix (ECM) in...Ch. 10 - Prob. 2TYCh. 10 - The polysaccharide that form the hard outer...Ch. 10 - Prob. 4TYCh. 10 - Prob. 5TYCh. 10 - Prob. 6TYCh. 10 - Prob. 7TYCh. 10 - Prob. 8TYCh. 10 - A type of tissue that is rich in ECM or has cells...Ch. 10 - Which of the following is not a correct statement...Ch. 10 - Prob. 1CQCh. 10 - Prob. 2CQCh. 10 - Core Concept: Systems We can view the body of a...Ch. 10 - Discuss the similarities and differences between...Ch. 10 - Discuss the similarities and differences between...
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- 9) Gap junctions are intercellular connections that A. primarily serve to keep cells separated and allow for transport across a tissue barrier. B. serve as a regulated cytoplasmic bridge for sharing of small molecules between the cells. C. serve as a barrier to prevent protein movement within the cellular membrane. D. are cellular components for constitutive exocytosis that occurs between adjacent cells.arrow_forwardWhich of these cell junctions are open channels that connect the cytoplasm of adjoining plant cells? A. Adhering junctions B. Tight junctions C. Gap junctions D. Plasmodesmataarrow_forwardWhen Covid 19 infects one cell, the cell next door is supposed to get signaled to start preparing its defenses against the invading virus. What type of direct cellular connection in human cells would allow this communication? Select one: a. anchoring junctions like desmosomes b. Plasmodesmata c. Tight junctions with claudin and occludin d. gap junctionsarrow_forward
- Which is/are true of epithelial cells?a. They can only move uncharged molecules across their surfaces.b. They may have segregated functions on apical (luminal) and basolateralsurfaces.c. They cannot form tight junctions.d. They depend upon the activity of Na1/K1-ATPase pumps for much of their transport functions.e. Both b and d are correct.arrow_forwardwhat is the protein component of the contractile ring that divides the cytoplasm of animal cells during cytokinesis a. tubulin b. actin c. microtubulin d. lamin e. chitinarrow_forwardWhich of the following is not a function of proteins present in theplasma membrane?a. Proteins assist the passage of materials into the cell.b. Proteins interact with and recognize other cells.c. Proteins bind with specific hormones.d. Proteins carry out specific metabolic reactions.e. Proteins produce lipid molecules.arrow_forward
- Which of the following statements is NOT TRUE about tissues? A. The extracellular matrix of blood tissue is the plasma B. In adipose tissue, tiny cells are surrounded by very thick extra cellular matrix which is where all the fat is located C. Epithelial cells sometimes have cilia like the ones used in comb jellies and placozoans D. Nervous Tissue has only one cell type, the neuronarrow_forwardThe total volume of plant cells is often significantly greater than the total volume in animal cells. The most reasonable explanation for this observation is that Select one: A. animal cells are spherical, whereas plant cells are elongated. B. plant cells are capable of having a much higher surface-to-volume ratio than animal cells. C. plant cells have a much more highly convoluted (folded) plasma membrane than animal cells. D. plant cells contain a large vacuole that occupies much of the volume of the cell.arrow_forwardWhich of these statements about ion movement through the plasmamembrane is true?a. Movement of Na+ out of the cell requires energy (ATP).b. When Ca2+binds to proteins in ion channels, the diffusion of Na+into the cell is inhibited.c. Specific ion channels regulate the diffusion of Na+ through theplasma membrane.d. All of these are truearrow_forward
- The type of tissue found on human skin has all these features except A. High power of regeneration B. Highly vascularized C. Has many cell junctions D. Movement of materials is by simple diffusionarrow_forward1. adjacent cells. a. Gap junctions prevent fluid from leaking between b. Desmosomes c. Tight junctionsarrow_forwardFill in the concept map to the left on your own paper to organize the information on the different levels of organization of cells.arrow_forward
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