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What was Alexander Fleming trying to answer?
Alexander Fleming was trying to understand why certain strains of bacteria were not growing in his laboratory cultures. He accidentally discovered penicillin when he observed that a mold called Penicillium notatum inhibited the growth of these bacteria. This led to the development of the first antibiotic.
What had happened to the bacteria in the clear area around the paper disc soaked in spot lotion?
The bacteria in the clear area around the paper disc soaked in the spot lotion were likely killed or inhibited from growing. The spot lotion contains chemicals that are effective against bacteria, creating a zone of inhibition where bacterial growth is suppressed.
How did Alexander Fleming test his hypothesis?
Alexander Fleming tested his hypothesis by conducting experiments to observe the effects of Penicillium mold on bacterial growth. He noticed that the mold inhibited the growth of bacteria, leading to the discovery of penicillin as an antibacterial agent. Fleming's observation of the zone of inhibition around the mold was crucial in confirming his hypothesis.
What did discovered Alexander Fleming?
Lysozyme and PenicillinHe was the first person to notice that a fungus (Penicillin) inhibited the growth of bacteria. Other people later purified the substance doing this and made the first antibiotic.
Who was the scientist who noticed that there were no germs around some mould?
Louis Pasteur was the scientist who noticed that there were no germs around some mold. He discovered that certain molds, like Penicillium, produced a substance that inhibited the growth of bacteria, leading to the development of antibiotic drugs like penicillin.
How can itching be relieved when wearing a cast?
Use the CastCooler to remove moisture trapped in the lining of your cast. Without moisture, bacteria growth is inhibited and odor and itch are reduced.
What is meant by antimicrobial susceptibility?
A bacteria which is harmed, inhibited or killed by the antibiotic
What Alexander discovered?
Lysozyme and PenicillinHe was the first person to notice that a fungus (Penicillin) inhibited the growth of bacteria. Other people later purified the substance doing this and made the first antibiotic.
What was Alexander Fleming trying to answer?
Alexander Fleming was trying to understand why certain strains of bacteria were not growing in his laboratory cultures. He accidentally discovered penicillin when he observed that a mold called Penicillium notatum inhibited the growth of these bacteria. This led to the development of the first antibiotic.
When was pencillin found?
Penicillin was discovered in 1928 by Scottish scientist Alexander Fleming. He observed that a mold called Penicillium notatum inhibited the growth of bacteria, leading to the development of the first antibiotic.
What had happened to the bacteria in the clear area around the paper disc soaked in spot lotion?
The bacteria in the clear area around the paper disc soaked in the spot lotion were likely killed or inhibited from growing. The spot lotion contains chemicals that are effective against bacteria, creating a zone of inhibition where bacterial growth is suppressed.
How does oxygen slow bacterial growth?
Oxygen slows bacterial growth by affecting the metabolic pathways within the bacterial cells. Aerobic bacteria require oxygen to produce energy through respiration, and when oxygen is limited, their growth is inhibited. Oxygen can also generate reactive oxygen species that damage cellular components, further inhibiting bacterial growth.
If a petri dish shows a large zone of inhibition what does this say about the antibiotic?
A large zone of inhibition on a petri dish indicates that the antibiotic has effectively inhibited the growth of bacteria surrounding the disc. This suggests that the antibiotic is potent against the bacteria being tested, as it can effectively prevent their growth. A larger zone of inhibition usually indicates a higher concentration of antibiotic or greater efficacy against the bacteria.
What is the mechanism of action of sulfonamides?
Sulfonamides inhibit dihydropteroate synthetase so that the bacteria's nucleotide synthesis is inhibited.
Which pathways are specifically inhibited by sulfonamides?
Those diseases caused by bacterial infection/growth are inhibited by sulfonamide drugs because the drug interferes with the ability of the bacteria to reproduce. This slows down the development of the infection giving the bodies natural immune system time to develop the defenses needed to destroy the bacteria naturally.
How does salt preserve foods?
It creates an environment hypertonic to the cells of the bacteria that might cause harm if we ate them. The growth of the bacterial cells is inhibited because the plasma membrane pulls away from the cell due to the shrinkage caused by the salt.
If the bacteria can not use citrate what will the results be in the citrate agar test?
If bacterium cannot use glucose the fermentation tube will stay the same color. Gas may also occur inside the fermentation tube.
