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Question:-
Why is there more bacterial diversity on the back of your hand and why is there less bacterial diversity on the front of your hand?
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- Why is there more bacterial diversity on the back of your hand and why is there less bacterial diversity on the front of your hand? (not referring to abundance).Q2) Why do cheek cells stain red with the gram stain? What is the big red circle in the middle of the cheek cell? - Considering that it isn’t possible to identify bacteria from a Gram stain, why might a physician perform a Gram stain on a sample before prescribing an antibiotic? - What cells stain red in a Gram stain? What cells stain purple in a Gram stain?a. What can you observe in viewing your stained bacterial slide under the microscope if you fixed a lot of bacterial colonies in your slide during smear preparation? b. What can you observe in viewing your stained bacterial slide under the microscope if you heat fixed your slide in a much longer exposure to heat?
- 400x 1000x What is the shape of bacteria under a microscope, what color is there, and is there Gram staining is positive or negative.When performing a Gram stain on a Gram-negative bacteria, why does the bacteria stain pink? Crystal violet stain binds to iodine and remains in the bacterial cell wall because of the thick peptidoglycan layer. Safranin counterstain gets in the bacteria’s cell wall to stain the cell pink. The alcohol wash removes crystal violet and iodine from the bacteria. Crystal violet stain binds to iodine and remains in the bacteria cell wall because of the thick peptidoglycan layer AND Safranin counterstain gets in the bacteria’s cell wall to stain the cell pink. Safranin counterstain gets in the bacteria’s cell wall to stain the cell pink AND The alcohol wash removes crystal violet and iodine from the bacteria.1)What is the natural color of cytoplasm? How is it related to our need to stain bacterial cells? 2) Which of the following is the main goal when staining a culture? A) improve contrast B) identify bacteria C) Visualize bacterial structures
- If there are bacterial clumps visible in a drop of water on a glass slide, will this affect the staining of the bacteria? If there are bacterial clumps visible in a drop of water on a glass slide, will this affect the staining of the bacteria? No; the clumps will wash away later. Yes; the clumps will hide the individual bacteria. The clumps will not stain. Yes; the clumps of bacterial cells may retain the stains and lead to incorrect data being collected. SubmitRequest AnswerQuestion:- Define the bacterial categories that each type of bacteria belongs to. You only have to name the categoriesNOT the actual species of bacteria Note: there will be more than one category . A bacterial species that grows best at 37 degrees Cand when a small amount of oxygen is presentIn lab, we used the Gram stain to differentiate between Gram-positive and Gram-negative bacteria. Some bacteria stain purple (retaining the crystal violet) while others stain pink (from the counter-stain safranin). a) What is the biological molecule that is present in these bacteria that produces different results between Gram-positive and Gram-negative bacteria (be specific!) AND b) What is the difference between Gram-positive and Gram-negative bacteria that creates the different staining patterns (purple vs. pink)? (2-3 sentences max)
- 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 wallWhat is the difference between gram positive and gram negative bacteria? Describe how we use this to our advantage in the gram staining process. Hint: Gram positive versus Gram negative!!!a. After conducting the Gram staining procedures and you observed that all cells are stained with too much purple though the bacteria you fixed is Gram negative, what could be the mistake you have done? b. After conducting the Gram staining procedures and you observed that all cells are stained with too much pink though the bacteria you fixed is Gram positive, what could be the mistake you have done?