What COLOR ARE GRAM POSITIVE BACTERIA? WHAT ARE THE 2 MAJOR DIVISIONS OF GRAM + BACTERIA? GIVE 4 EXAMPLES OF GRAM + BACTERIA AND THE DISEASES THAT THEY CAUSE? CITE 3 MAIN CRITERIA THAT MAKE GRAM POSITIVE PATHOGENIC (WHAT THEY USE TO HARM) WHAT ARE THE TOXINS THAT THEY RELEASE TO CAUSE HARM TO THE INFECTED PERSON? GIVE 3 EXAMPLES OF SKIN DISEASE CAUSED BY GRAM POSITIVE BACTERIA
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Step 1: Gram positive bacteria are blue in color when viewed under a microscope due to the retention of crystal violet dye by their thick peptidoglycan cell wall. Show more…
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1. Explain how the differences in cell wall structures of gram-positive and gram-negative bacteria cause them to stain differently with the Gram stain. 2. Describe the purpose of each of the four basic steps of Gram staining. 3. Describe the images provided at the "Bacterial Morphology and Staining Techniques" web link for Staphylococcus epidermidis and Escherichia coli, including the color and morphology of each organism. 4. Discuss how the structure of gram-negative bacteria contributes to their ability to cause disease.
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What color would a Gram-negative cell be if we skipped the iodine? What color would a Gram-positive cell be if we skipped the same step? Why? 2. Are all bacteria either Gram-positive or Gram-negative? If not, what is an example of a different type of bacteria? How does it differ from a Gram-positive/negative cell?
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Gram-negative bacteria $a$ appear blue to purple following Gram staining. $b$. are the most abundant of the bacterial groups. $c .$ are all either bacilli or cocci. $d$. contain no peptidoglycan in their cell walls. $e$ are all photosynthetic.
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