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- how can bacteria populations become resistant to antibiotics? use the terms pre- existing, inherited, variation, survive, over generations and resistant- ↓ nutrients, ↑ metabolic waste, overcrowding- culture becomes sterile- accelerated binary fission- adaptation, synthesis of DNA, RNA, proteins Answer a, b , c or d in each oneMicrobe that causes Disease Environment in which the microbe thrives How to break the environmental chain and control the spread of the disease Salmonella - bacterium that causes salmonellosis Intestines of people and animals- lives in raw eggs poultry,and meat Borrelia burgdorferi-bacterium that causes Lyme disease Lives in deer ticks Group A Streptococcus- bacterium that causes '' strep'' infections Lives in the mucus from the nose or throat of an infected person Giardia- protozoan that causes giardiasis Lives in feces of infected people and animals. Spread by contact with contaminnated water. Rabies virus Lives in the saliva of infected animals.Spread when an infected animal bites another animal or person. Here is table of Disease Causing Microbes . What ways you can think to control the spread the disease ?
- Which of these statements is true? An antibiotic is any substance produced by a organism that is antagonistic to the growth of prokaryotes An antibiotic is any substance produced by a prokaryote that is antagonistic to the growth of other viruses An antibiotic is any substance produced by a prokaryote that is antagonistic to the growth of eukaryotic cells An antibiotic is any substance produced by a prokaryote that prevents growth of the same prokaryote.C. In 1928, Sir Alexander Fleming was studying Staphylococcus bacteria growing in culture dishes. He noticed that a mold called Penicillium was also growing in some of the dishes. A clear area existed around the mold because all the bacteria that had grown in this area had died. In the culture dishes without the mold, no clear areas were present. Fleming hypothesized that the mold must be producing a chemical that killed the bacteria. He decided to isolate this substance and test it to see if it would kill bacteria. Fleming transferred the mold to a nutrient broth solution. This solution contained all the materials the mold needed to grow. After the mold grew, he removed it from the nutrient broth. Fleming then added the nutrient broth in which the mold had grown to a culture of bacteria. He observed that the bacteria died. 1 2. What was Fleming's hypothesis? Compilation of Biochemistry Laboratory Activities Prepared by FAVillenas and EVSamaniego 3 Identify the problem. 4 5. How was…01: Write T' if the statement is true and 'F' if the statement is false.: 1- Antibiotic resistance is one of the special properties of a Plasmid. 2- Archaea was discovered as a new group by using 16s FRNA.A 3- Prokaryotic cells can be divided into Bacteria and Eukarya. 4- Selective forces can't be involved in setting the cells morphology. 5- The main function of cytoplasmic membrane is selective permeability which means that nutrients transported in and waste products out. 6- Eukarya is much more closely related to Bacteria than to Archaea. 7- Griffith's transformation was done in Streptococcus pneumoniae. 8- Lysozyme can cleave the glycosidic bond B-1,3 between sugars in peptidoglycan 9. Porins are transmembrane lipid channels found in cytoplasmic membrane for entrance and exit of - solutes, 10-Cell walls of some Archaea contain S-layer which is polysaccharide polymers
- C. In 1928, Sir Alexander Fleming was studying Staphylococcus bacteria growing in culture dishes. He noticed that a mold called Penicillium was also growing in some of the dishes. A clear area existed around the mold because all the bacteria that had grown in this area had died. In the culture dishes without the mold, no clear areas were present. Fleming hypothesized that the mold must be producing a chemical that killed the bacteria. He decided to isolate this substance and test it to see if it would kill bacteria. Fleming transferred the mold to a nutrient broth solution. This solution contained all the materials the mold needed to grow. After the mold grew, he removed it from the nutrient broth. Fleming then added the nutrient broth in which the mold had grown to a culture of bacteria. He observed that the bacteria died. 1. Identify the problem. 2. What was Fleming's hypothesis? 3. How was the hypothesis tested? 4. Should the hypothesis be supported or rejected based on the…Development of Resistance to antimicrobial drugs: What is the difference between a natural, semisynthetic, and synthetic antibiotic? How was the first natural antibiotic discovered? (To answer this question, identify the antibiotic, distinguish between the fungus and the antibiotic, explain where the antibiotic came from, and explain how people knew the antibiotic had antibiotic properties.) Give an example of a strain of bacteria (Genus and species) that is now resistant to commonly used antibiotics (identify the specific antibiotic). Describe the physiological mechanism used by individual bacteria to resist the antibiotic listed in part “3” of this Thought Question. For example, the mechanism could be modification of drug, modification of target, prevention of drug penetration, overproduction of target, or target mimicry. (This means that you must choose a strain of bacteria that we know the characteristic of the bacteria that allows the bacteria to be resistant.) How do…Where you can find bacteria ?enlist it? Mention the reason why bacteria is present everywhere?
- How can bacteria harm/help us? Describe and provide two specific examples for each.Which of the following options best describes the process of selection for antibiotic-resistant bacteria in the presence of an antibiotic? Antibiotic resistance occurs when the human body resists an antibiotic; the bacteria are not under selective pressure Antibiotic-resistant cells are naturally stronger, so they always take over in the presence of antibiotic- sensitive cells Antibiotics kill off sensitive cells, while resistant bacteria survive and multiply O In the presence of antibiotics, most bacterial cells react by becoming resistant before they start dividing again MacBook Air DD 000 80 F9 000 F8 F7 F5 F6 F3 F4How was smallpox eliminated? Natural immunity? Vacination? Etc. Appreciate that viruses are obligate parasites and outside of a cell they are inert and cannot reproduce How does normal bacterial flora protect humans from disease? What are some of the main foods that are produced o by microbes What are the criteria used to call a disease an emerging infectious disease? What are the main differences between eukaryotes and prokaryotes? MCB Exam 1 Review What is the main reason why plants depend on microbes What is bioremediation What is meant by resolution of a microscope? Know examples of differential stains aced Fast Stain,and gram otain Know the sequence of simple stain and the steps of gram stain What factors could cause gram positive organisms toaopear like gram negative after staining? Know the stain for capsules and endospores Know examples of selective and differential media Understand the principle of immunofluorescence and it's uses What is biofilm and its uses by microbes Know…