Question 3 of 15 What are Gram-positive bacteria? Select the correct response(s): They have a cell wall made-up of a thin layer of peptidoglycan. They retain crystal violet dye and thus are stained pink. They cannot retain crystal violet dye and thus are stained purple. They retain crystal violet dye and thus are stained purple. They have a cell membrane made-up of a thick layer of peptidoglycan. They have a cell membrane made-up of a thin layer of peptidoglycan. They cannot retain crystal violet dye and thus are stained pink. They have a cell wall made-up of a thick layer of peptidoglycan.
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- I am doing my microbiology homework and I need help with these questions: 1) List the structures ALL bacteria possess. 2) Identify three structures SOME but not all bacteria possess. 5) Describe the structure and function of three different structures found outside of the bacterial cytoplasmic membrane. 6) Differentiate between the two main types of bacterial envelope structures. 7) Why are Gram-positive cell walls stronger than Gram-negative cell walls? 8) Name a substance in the envelope of SOME bacteria that can cause severe symptoms in humans. 9) Describe the causes of sporogenesis and germination 10) Compare and contrast the major features of archaea, bacteria and eukaryotes by completing the table below. Characteristic Bacteria Archaea Eukarya Chromosome Type of Ribosomes Protein Synthesis Similar to Eukarya Sterols In Membrane Membrane-bound Organelles Peptidoglycan in Cell wallO intermediate Question 10 Why are most Gram-negative bacteria resistant to penicillin? O endopsores made by Gram-negative bacteria are resistant to penicillin O the outer membrane of Gram-negative cell wall prevents diffusion of penicillin the waxy cell wall of Gram-negative bacteria prevents diffusion of penicillin Gram-negative bacteria have thick layers of peptidoglycan which prevents diffusion of penicillin Question 11If bacteria are nonmotile, what can be inferred? Question 3 options: Mimimal number of flagella renders their body nonmotile. They lack motility structure to propel their multicellular body. Absence of flagella deprives them function of locomotion. The flagella at one end of their body make them nonmotile.
- Figure 13.6 Which of the following statements is true? a. Gram-positive bacteria have a single cell wall formed from peptidoglycan. b. Gram-positive bacteria have an outer membrane. c. The cell wall of Gram-negative bacteria is thick, and the cell wall of Gram-positive bacteria is thin. d. Gram-negative bacteria have a cell wall made of peptidoglycan, while Gram-positive bacteria have a cell wall made of phospholipids.Why might clinical medicine have an interest in understanding bacterial cell division at the molecular level? Explain why a hyperthermophile would probably not be a human pathogen. Describe four factors that may have an influence on the effectiveness of an antimicrobial treatment. Explain why 70% or 80% alcohol is more effective than 100% alcohol in controlling microorganisms.QUESTION 1 Why is heat or a VERY long incubation required to stain Mycobacteria? mycotoxins present in the bacteria break down the stain; heating destroys the mycotoxins allowing the stain to enter the cells. waxy mycolic acids present in the bacteria break down the stain; heat prevents the stain from breaking down. waxy mycolic acids present in the bacterial cell walls prevent the stain from entering at room temperature; when heated, some stain is able to penetrate the cells. mycotoxins in the bacteria prevent the stain from entering the cells; heating inactivates the mycotoxins QUESTION 2 Micrococcus luteus was used as a negative control in an acid fast staining procedure - what does it mean to be a negative control? THERE ARE 2 CORRECT ANSWERS O Negative control bacteria are NOT expected to stain with acid fuschin. Negative control bacteria are expected to stain. Negative control bacteria are expected to stain only when heated. A heat-fixed smear of negative control bacteria is an…
- Please answer fast 1) This member of class Alphaproteobacteria has a unique method of moving around and orienting itself within its environment. This organism contains magnetosomes which allow it to respond to magnetic fields. Group of answer choices 1/ Flavobacterium johnsoniae 2/ Mycoplasma genitalium 3/ Thiomargarita namibienus 4/ Magnetospirillum magnetotacticum 2)This member of class Saccharomycota can use either aerobic respiration or fermentation to metabolize glucose. Group of answer choices 1/ Flavobacterium johnsoniae 2/ Magnetospirillum magnetotacticum 3/ Saccharomyces cerevisiae 4/ Staphyloccous aureus 3)This bacterium can live in viscous environments. It uses its flagella to move around and to stick to tissues. Group of answer choices 1/ Magnetospirillum magnetotacticum 2/ Helicobacter pylori 3/ Flavobacterium johnsoniae 4/ Mycoplasma genitalium 4)This member of Class Gammaproteobacteria lives in oxygen-poor environments and detoxifies…Describe the cross - section side view of a Gram - negative cell . Clearly state where the following would be located or write the letters in order of appearance from the outside to the inside . If any of these structures are not present , make sure to leave them out . A ) peptidoglycan ; ( B ) periplasm ; ( C ) porin ; ( D ) LPS ; ( E ) teichoic acids ; ( F ) plasma membrane : ( G ) outer membrane : ( H ) nucleoidGram-positive bacteria Question 20 Which bacterial cell structure: function pair below is mismatched/false? O ribosomes: sites of ATP synthesis endospore: tough resistant structure to protect DNA under harsh conditions capsule: prevents phagocytosis by host phagocytes chromosome: genetic information of cell
- O Mycobacterium tuberculosis Question 23 A patient has an infection caused by a bacterial species that produces toxins that are capable of breaking down DNA and dissolving hyaluronic acid. Which disease does this person have? O Meningitis O Pertussis O Necrotizing fasciitis O Shigellosis Question 24 During which phage of Bordetella pertussis infection will you hear the characteristic 'whoop' sound? O Incubation MAY 12Question:- 1. Mechanism of action of cytoplasm membrane inhibitors antibiotics 2. Types of cytoplasm inhibitors medicines 3. Resistant strain emergence to cytoplasm membraneWhat implications does the complex hydrophobic mycobacterial cell wall have in terms of treating diseases caused by these bacteria?