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mboi ch4 quiz
| Question | Answer |
|---|---|
| Serological analysis for bacterial identification typically involves using: analysis of the appearance of colonies, a microscope to det cell morphology, or specific antibodies to the bacterial cell antigens | specific antibodies to the bacterial cell antigens |
| What structure does not contribute to the ability of pathogenic bacteria to cause disease: inclusions, fimbriae, capsule, slime layer, outer membrane of gram neg cell walls | inclusions |
| The term that refers to the presence of a tuft of flagella emerging from the same site: Amphitrichous, Atrichous, lophotrichous, monotrichous, peritrichous | lophotrichous |
| The short, numerous appendages used by some bacterial cells for adhering to surfaces | fimbriae |
| T or f. gram negative bacteria do not have peptidoglycan in their cell walls. | false |
| The 2 functions of bacterial appendages are | attachment and motility |
| T/F… both gram positive and gram neg. cells have outer membranes | false |
| T/F… Boiling water (100 degrees C) can normally destroy endospores | false |
| Bacterial cells could have any of the following appendages except:flagella, cilia, finbriae, periplasmic flagella(axial filiments), sex pili | cilia |
| Serological analysis for bacterial identification typically involves using: analysis of the appearance of colonies, a microscope to det cell morphology or specific antibodies to the bacterial cell antigens | specific antibodies to the bacterial cell antigens |
| T/F… bacteria in the genus mycoplasma and bacteria called L-forms lack cell walls | true |
| Plasmids: are found in all bacteria, are essential for survival, cant be passed bet organisms,cant be passed onto progeny, are often the site of pathogenic genes | are often the site of pathogenic genes |
| A prokaryotic cell wall that has primarily peptidoglycan w/small amts of teichoic and lipoteichoic acid:gram+, gram -, archaea, spheroplast, acid fast | gram positive |
| T/F…The first cells on earth were probably archaea | true |
| T/F…Endospores of certain bacterial species can enter tissues in the human body, geminate and cause an infectious disease | true |
| T/F…the slime layer gives bacteria a greater pathogenicity as compared to the capsule | false |
| Chemo taxis refers to the ability to: move in response to light, move in response to a chemical, not move in response to chem., transport desired mol’s into cell, none of above | move in response to a chemical |
| The basal body of a flagellum is anchored into the : hook, outer membrane, cell wall, peptidoglycan layer, cell membrane | cell membrane |
| T/F…the prokaryotic cell membrane is a site for many enzymes and metabolic reactions | true |
| T/F…alcohol-based compounds can weaken the outer membrane | true |
| Which is not a bacterial class involved in causing human & animal disease: scotobacteria, firmibacteria, archaebacteria, thallobacteria, mollicutes | archaebacteria |
| Peptidoglycan is a unique macromolecule found in bacterial: cell walls, cell membranes, capsules, slime layers, inclusions | cell walls |
| The outcome of the Gram stain is based on diff in the cell’s: ribosomes, inclusions, cell wall, cell membrane, flagella | cell wall |
| The enzyme ____, that is found in tears and saliva, can hydrolyze the bonds in the glycan chains of certain bacterial cell walls:penicillinase,lysozyme,peptidase, all, none | lysozyme |
| The term that refers to flagella at both poles is: amphitrichous, atrichous, lophotrichous, monotrichous, peritrichous | amphitrichous |
| The transfer of genes during bacterial conjugation involves rigid tubular appendages called: flagella, cilia, fimbriae, periplasmic flagella (axial filaments), sex pili | sex pili |
| Spirochetes have a twisting & flexing locomotion due to appendages called: flagella, cilia, fimbriae, periplasmic flagella (axial filaments), sex pili | periplasmic flagella (axial filaments) |
| A bacterial cell exhibiting chemo taxis probably has: fimbriae, a capsule, thylakoids, flagella, MET achromatic granules | flagella |
| The term that refers to the presence of flagella all over the cell surface is: amphitrichous, atrichous, lophotrichous, monotrichous, peritrichous | peritrichous |
| Which structure protects bacteria from being phagocytized: slime layer, fimbriae, cell membrane, capsule, all the above | capsule |
| The bacterial chromosome: is located in cell membrane, contains all cell’s plasmids, is part of the nucleoid, forms a single linear strand of DNA, All the above | is part of the nucleoid |
| the following structures contrib. to the ability of pathogenic bacteria to cause disease except: inclusions, fimbriae, capsule, slime layer, outer membrane of gram neg cell wall | inclusions |
Created by:
higgins5163