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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Textbook Question
Chapter 23.4, Problem 1TYK
Which structure is associated with motility in one or more types of bacteria?
- flagellum
- peptidoglycan
- lipopolysaccharide envelope
- mucilage
- all of the above
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Which of the following statement/s is/are true about gram negative bacteria
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Which of the following statement/s is/are true about gram positive bacteria
Cell wall has thick peptidoglycan layer
Cell wall lipid content is very low
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All of the above
What cellular structure protects bacteria from drying out?
Peptidoglycan
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Chapter 23 Solutions
Principles of Biology
Ch. 23.1 - Prob. 1TYKCh. 23.1 - Prob. 2TYKCh. 23.2 - Prob. 1TYKCh. 23.2 - Prob. 2TYKCh. 23.3 - Prob. 1CCCh. 23.3 - Prob. 1TYKCh. 23.3 - What essential role did early alphaproteobacteria...Ch. 23.4 - Prob. 1CCCh. 23.4 - Which structure is associated with motility in one...Ch. 23.5 - In which of the hosts does sexual mating of P....
Ch. 23.5 - Prob. 1TYKCh. 23.6 - Prob. 1CCCh. 23.6 - Prob. 2CCCh. 23.6 - Prob. 1BCCh. 23.6 - Prob. 1TYKCh. 23.7 - Prob. 1TYKCh. 23 - Prob. 1TYCh. 23 - Prob. 2TYCh. 23 - Prob. 3TYCh. 23 - Prob. 4TYCh. 23 - Prob. 5TYCh. 23 - The protists most closely related to the fungal,...Ch. 23 - Prob. 7TYCh. 23 - Prob. 8TYCh. 23 - People use bacteria, protists, or fungi to: make...Ch. 23 - Prob. 1CCQCh. 23 - Prob. 2CCQCh. 23 - Prob. 3CCQCh. 23 - Prob. 1CBQCh. 23 - Prob. 2CBQ
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- Give the functions of the following bacterial structures. Granules Pili Flagella Endospores Capsulearrow_forwardWhich of the following structures is most likely missing in a bacterium that regenerates from an endospore lacking any of the plasmids from the original cell? Oa chromosome water in its cytoplasm antibiotic-resistant genes a cell wallarrow_forwardIn the diagram below, identify the structures of a cyanobacterial cell based on the following descriptions: a) Outer cellular covering which includes: Mucilaginous layer – outermost layer covering the cell wall; protects the cell from harmful factors of the environment Cell wall – found just below the mucilaginous layer; 2 or 3-layered, the inner layer lies in between the outer wall layer and plasma membrane; the outer layer is made of peptidoglycan Innermost plasma membrane – selectively permeable membrane enclosing the cytoplasm b) Cytoplasm – found below the plasma membrane; the protoplasm which contains structures of different shapes and functions. Lamellae, which contain pigments such as chlorophylls, carotenes, xanthophylls, phycoerythrin and phycocyanin, are located in the peripheral region of cytoplasm. Ribosomes may also be found scattered in the cytoplasm. c) Nucleic material – the nucleoplasm that is centrally located in the cell and contains chromatin in the form…arrow_forward
- Mycoplasmas are bacteria that lack cell walls. On the basis of this structural feature, which statement concerning mycoplasmas should be true? They are gram-negative. They are subject to lysis in hypotonic conditions. They lack a cell membrane as well. They should contain less cellulose than do bacteria that possess cell walls. They possess typical prokaryotic flagella.arrow_forwardA is a sticky layer of polysaccharide or protein surrounding a bacterial cell, for the purpose of adhesion to a surface or to prevent dehydration. capsule slime layer peptidoglycan layer more than one of the abovearrow_forwardWhat type of bacteria is this ? GRAM POSITIVE COCCUS YELLOW PIGMENT CATALASE+ MOTILITY – NITRATE + UREASE + OXIDASE+ INDOLE – CITRATE – GLUCOSE FERM – LACTOSE FERM- SUCROSE FERM -arrow_forward
- Which one of the terms below is NOT a stage in the typical growth curve of a bacterial cell under ideal conditions in culture? O Exponential phase Lag phase Stationary phase Leg Phase Death Phasearrow_forwardYou are studying a new bacteria isolated from the soil by identifying the cellular structures that it makes. The presence of which of the following would indicate that your organism must be a Gram-positive bacterium? It has a cell wall with teichoic acids It has a polyhydroxyalkanoate storage granule It has an outer membrane with LPS It has a flagellaarrow_forwardSmall bristle-like structures used by bacteria for movement are: O flagella O cytoskeleton O cilia O microfilamentsarrow_forward
- Which of the following is NOT a structure involved in the movement of bacteria? Cilia Sex Pilus Flagellum Cell Wallarrow_forwardWhich of the following is correct? All bacteria can form endospores Vegetative cells are inactive cell Endospores are a dormant stage of a cell Endospores stain pinkarrow_forwardA bacteria cell which is longer than it is wide is classified as: Vibrio Coccus Bacillus Bacteria which normal colonize the human gut are classified as: Anaerobes Pathogens Aerobes A bacteria which absolutely needs oxygen to live is classified as: Obligate anaerobe Obligate aerobe Facultative anaerobe The structure on this list which will NOT be found in any bacterial cell is: Cytoplasm Flagella Nucleus The genetic information of bacteria cell is contained in the: Capsid Nucleoid Ribosomes The genetic material of a virion is called the: Genome Nucleoid Nucleusarrow_forward
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