Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 10, Problem 5TY
Summary Introduction
Introduction: In a multicellular organism, cells are linked to each other by specialized structures called cell junctions. Plant cells are connected by middle lamella and plasmodesmata. Plasmodesmata are defined as passageways or pores between cell walls of adjacent cells that can be opened or closed. When opened, they allow the direct diffusion of ions, water, and small molecules between the cytosols of adjacent cells.
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Eukaryotic motile cilia and flagella have similar structures but vary in number, length, and function. For each of the following, compare/contrast cilia and flagella.
a. number present per cell.
b. length of appendage.
c. direction of force generated relative to the direction of the appendage.
d. function in unicellular and multicellular eukaryotes.
e. motion analogy.
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.
Direct communication between animal cells that a virus infection like Covid 19 has taken place can occur via;
Select one:
a. tight junctions
b. plasmodesmata
c. gap junctions
d. desmosomes
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 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_forwardThe 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.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_forward
- 72) Plasmodesmata can change in number, and when dilated can provide a passageway for macromolecules such as RNA and proteins. True Or False ?arrow_forwardDefine the following terms: a. ER lumen b. rough ER c. smooth ER d. clathrin e. Golgi apparatusarrow_forwardCilia and fl agella are involved ina. forming junctions between cells.b. establishing the extracellular matrix.c. cell-to-cell communication.d. cell movement.arrow_forward
- Which of the statements regarding plasmodesmata is true? They are channels, located in the plasma membrane of plant cells and made of transmembrane proteins, that allow ions and small molecules to pass between adjacent cells. O They are holes in the cell wall through which the plasma membrane and endoplasmic reticulum of adjacent cells are connected. They are channels, located in the plasma membrane of animal cells and made of transmembrane proteins, that allow ions and small molecules to pass between adjacent cells. They provide points of structural support between adjacent plant cells. They provide points of structural support between adjacent animal cells.arrow_forwardActin is found in Microtubules are found in Select one: a. microvilli and flagella, lamellipodium and cilia Ob. flagella and lamellipodium, flagella and desmosomes c. mitotic spindles and microvilli, flagella and cilia d. microvilli and lamellipodium, flagella and cilia e. flagella and cilia, microvilli and lamellípodium ycle HW due Jump to. O Next page cancer stem cellsarrow_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
- (30. While conducting research on Euglena, a researcher observed that the contractile vacuole ceased functioning yet the rest of the organism seemed healthy and active. Which of the following is MOST likely responsible for the cessation of contractile vacuole action? A. Moving the Euglena from a lighted to darkened environment. B. Moving the Euglena from a freshwater to a seawater environment. C. Moving the Euglena 1om a seawater to a freshwater environment. D. Lowering the pH of the medium from 7.0 to 6.5. E. Lowering the temperature of the medium from 20°C to 15°C.arrow_forwardincrease the outer surface area of the plasma membrane to increase absorption. a. Centrioles b. Cilia c. Microvilli d. Flagellaarrow_forwardWhich one of the following structures between two adjacent cells is an effective transport pathway? A Plasmalemma B Plasmodesmata C Plastoquinones D Endoplasmic reticulumarrow_forward
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