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4. Which of the following would you use on a skin wound: a disinfectant or an an

ID: 275575 • Letter: 4

Question

4. Which of the following would you use on a skin wound: a disinfectant or an antiseptic? 5. Of the chernicals we tested, which 2 are typically used as antiseptics? The and the 6. Based on the results and your collective knowledge/experience , which of the chemicals tested was the most effective in inhibiting bacterial growth AND, based on biodegradability and pH, seems to also be the least environmentally harmful? (i.e. you would use it in your home) 7. If members of your team were shopping for a good bathroom disinfectant, what criteria would you collectively, honestly use to choose from all the available products? List three criteria, in order of priority a. Most important: b. c. Least important 8. Think scientifically. If a chemical agent was effective in killing the strain of bacteria we tested in this lab exercise, can you assume it will be effective in killing other strains of bacteria? (Yes or No) 9. Think scientifically. If a chemical agent was ineffective in killing the strain of bacteria we tested, can you assume it will be ineffective in killing other strains of bacteria? (Yes or No) 10. List two different, specific factors in a person's lab techniques that might have negatively influenced the accuracy of their results a. b. 11. Based on the results of this exercise, do you think it necessary to spend a lot of money to buy cleaning agents for protection against the species of common household bacteria we tested today? (Yes or No)

Explanation / Answer

4. Antisceptic will be used on a skin wound as disinfectants are harmful tro human tissues.

5. 3% hydrogen peroxide solution and antisceptic hand soaps can be used as antisceptics.

6. Bleach is the most effective in inhibiting bacterial growth. vinegar and lemon juice are the least environmentally harmful and are biodegradable.

7. a. Should have the ability to inhibit growth of a variety of bacterial species.

b. Should be least toxic to the environment and it should be biodegradable.

c. Should be cheap.

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