Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 27, Problem 10TY
Summary Introduction
Introduction: Members of archaea and bacteria belong to a group of most primitive organisms found on earth and are prokaryotic in nature. These members are cosmopolitan and are found in almost all possible habitats and use various structures for the movement.
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Which of the following statement about the bacterial cell wall is INCORRECT?
a. The cell wall is relatively nonpermeable and restricts the passage of sugars and amino acids.
b. Gram-positive cells have more peptidoglycan in theircell walls than Gram-negative cells.
c. Gram-negative cells have a membrane both inside andoutside their cell walls.
d. The cell wall establishes a bacterium’s shape as a coccus,bacillus, or spirillum.
Members of the mycoplasma genus of bacteria do not have a cell wall for protection, existing with only a simple cell membrane made up of fatty acids and phospholipids. They cannot however, synthesize their own fatty acids. How is this possible?
A. They use host materials
B. They use peptidoglycan from other bacteria
C. They use anabolism as a way to create their outer membrane
D. They use amino acids to build their membranes
What kind of work is involved when a bacterial cell rotates its flagellum for "run and tumble" mechanism?
a. Transport
b. Chemical
c. Mechanical
d. Transport and Chemical
Chapter 27 Solutions
Biology
Ch. 27.2 - Core Skill: Connections Look ahead to Section...Ch. 27.2 - Prob. 2CSCh. 27.2 - Structure and Movement Concept Check: Does the...Ch. 27.2 - Prob. 3CSCh. 27.3 - Prob. 1CCCh. 27.5 - Prob. 1EQCh. 27.5 - Prob. 2EQCh. 27 - Which of the following features is common to...Ch. 27 - The bacterial phylum whose members typically...Ch. 27 - Gram-staining is a procedure that microbiologists...
Ch. 27 - Place the following steps in the correct order,...Ch. 27 - What ecological role do cyanobacteria play? a....Ch. 27 - Prob. 6TYCh. 27 - Prob. 7TYCh. 27 - Prob. 8TYCh. 27 - Prob. 9TYCh. 27 - Prob. 10TYCh. 27 - Prob. 1CQCh. 27 - Prob. 2CQCh. 27 - Prob. 3CQCh. 27 - Prob. 1COQCh. 27 - Prob. 2COQ
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- How do Gram-negative bacteria differ from Gram-positivebacteria?a. They are not pathogenic.b. Their peptidoglycan cell wall is thinner.c. Gram-negative bacteria cannot be Gram stained.d. They possess a single plasma membrane.e. Gram-negative bacteria do not photosynthesize.arrow_forwardWhich of the following is a primary bacterial cell wall function?a. transport c. supportb. motility d. adhesionarrow_forwardwas used by Joseph Lister to clean wounds and surgical instruments: A.Antibiotics b.Chlorine water Carbonic acid dAntitoxins e. Carbolic acid Which one of the following does not apply to the bacterial glycocalyx? It is not responsible for virulency b .It allows the organism to resist drying C. It may allow an organism to resist phagocytosis d.It is composed of carbohydrates E. It is enclosed by the cell wallarrow_forward
- All of the following are characteristics of the bacterial flagellum except: Select one: a. It has a hook-like insertion to a basal body in the cell wall. b. It is composed of protein c. It is used in conjugation d. Counterclockwise rotation moves bacteria forward All the following are characteristics of prokaryotes except: Select one: a. Prokaryotes have cell wall b. Prokaryotes have ribosomes c . Prokaryotes have organelles d. Prokaryotes lack a nucleus e. Prokaryotes have genesarrow_forwardWhich of the following is true of passive transport?a. it requires a gradient b. it uses the cell wall c. it includes endocytosis d. it only moves waterarrow_forwardWhich of the following cellular components are important players in maintaining the shape of bacterial cells: a. actin b. MreB c. tubular d. S-layer e. magnetitearrow_forward
- Which of the following is NOT true about bacterial endospores? A. They are produced by bacteria of the genus Bacillus and Clostridium B. They are “resting cells” for survival during adverse environmental conditions C. Resistant to desiccation (drying), heat, and chemicals D. Formed by walling off one end of the bacterial cell and surrounding it with a thick spore coat E. They represent a type of reproduction because their formation results in an increase in the number of bacterial cellsarrow_forwardMatch the microorganism to the best description of its cell wall component. A. Lacks cell wall , B.Made of cellulose photosynthetic , C.Composed of peptidoglycar , D.Protein coat with additional membranes. , E.Composed of chitin Algae Virus Fungi Protozoa Bacteriaarrow_forwardWhich of these molecules provides squish to the ECM? a. Elastin b. Hydrated Matrix c. Fibronectin d. Collagen e. Integrinarrow_forward
- Which of the following pairs is mismatched? a. catalase: hydrogen peroxide production b. bactericidal permeability-increasing protein: binds LPS and kills Gram-negative bacteria c. elastase: basement membrane degradation d. NADPH oxidase: superoxide radical production e. gelatinase: iron sequestration f. paracrine: acts on neighboring cells.arrow_forwardEndospores : A. are a dormant form of a bacterium AND are formed by members of medically relevant groups of bacteria. B. are a form of reproduction AND are formed by members of medically relevant groups of bacteria. C. are a dormant form of a bacterium AND are involved in anaerobic respiration. D. are formed by members of medically relevant groups of bacteria AND are involved in anaerobic respiration.arrow_forwardWhich of the following is present in both gram-positive and gramnegativecell walls?a. an outer membrane. c. teichoic acidb. peptidoglycan d.lipopolysaccharidesarrow_forward
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Prokaryotic vs. Eukaryotic Cells (Updated); Author: Amoeba Sisters;https://www.youtube.com/watch?v=Pxujitlv8wc;License: Standard youtube license