BIOLOGY
5th Edition
ISBN: 9781264104680
Author: BROOKER
Publisher: MCG
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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 gap junctions of animal cells differ from the plasmodesmata ofplant cells in thata. gap junctions serve as communicating junctions and plasmodesmataserve as anchoring junctions.b. gap junctions prevent extracellular material from moving betweenadjacent cells but plasmodesmata do not.c. gap junctions allow for direct exchange of cellular material betweencells but plasmodesmata cannot allow the same type of exchange.d. gap junctions are formed by specialized proteins that form channelsthrough the membranes of adjacent cells but plasmodesmata areformed by connecting the plasma membranes of adjacent cells.e. All of the above are correct.
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
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. 1CSCh. 10.2 - Prob. 1CCCh. 10.2 - Prob. 1CSCh. 10.2 - Prob. 2CCCh. 10.2 - Prob. 1EQCh. 10.2 - Cell Junctions CoreSKILL Explain the experimental...
Ch. 10.2 - Prob. 3EQCh. 10.2 - Prob. 3CCCh. 10.2 - Prob. 2CSCh. 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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- Which of the following junctions allows for cytoplasm-to-cytoplasmcommunication between cells?a. adhesion junctions c. gap junctionsb. tight junctions d. None of these are correct.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_forwardAnimal cells adhere together strongly through ., which are supported by intermediate filaments a. cellulose fibers b. desmosomes O c. plasmodesmata O d. tight junctions e. gap junctionsarrow_forward
- Below are three statements - two of which are truths and one is a lie. Which of the following statements is a lie? Select one: a. Cadherins connects the adjacent cells of the heart muscle to maintain its sheet like formation b. Proteins like claudins and occludins tightly holds adjacent animal cells together c. Gap junctions in animals and plasmodesmata in plants have similar function and structure Below are three statements - two of which are truths and one is a lie. Which of the following statements is a lie? Select one: a. If we move beyond the human body, the biological level of organization would then continue as follows; population, community, ecosystem, and finally, the biosphere, and if the biosphere is to organism, then a human is to a cell. b. Creating levels of organization of the structures of the body makes it easier to study and understand the structures and functions of the human body. c. Among the level of organization, the organism is the most important due to…arrow_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_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_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_forwardMost adjacent plant cells are connected by plasmodesmata, whereas only certain adjacent animal cells are connected through gap junctions. What might account for this difference?arrow_forwardWhich 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_forward
- A melanosome (type of vesicle containing the pigment melanin) is transported towards the nucleus of the cell. The hydrolysis of ATP is involved with this movement. Identify the most likely motor protein and cytoskeletal filament involved with this transport. a. Myosin, microtubules b. Kinesin, actin filaments c. Dynein, actin filaments d. Dynein, microtubules e. Kinesin, microtubules f. Myosin, actin filamentsarrow_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_forwardHelp mearrow_forward
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