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Tanya [424]
3 years ago
9

Who discovered penicillin and how ?

Biology
1 answer:
luda_lava [24]3 years ago
3 0

Answer:

In 1928, at St. Mary's Hospital, London, Alexander Fleming discovered penicillin. This discovery led to the introduction of antibiotics that greatly reduced the number of deaths from infection.

The discovery of penicillin was actually a mistake!

Fleming obtained an extract from the mold, naming its active agent penicillin. He determined that penicillin had an antibacterial effect on staphylococci and other gram-positive pathogens.

Explanation:

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Write body cell or sex cell after each of the following phrases.<br>a. Produced in testis​
Kisachek [45]
A. Sex cell

It looks like there’s more to the problem but since you only gave one I can only answer one. Hope this helps
3 0
4 years ago
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What are called micro organisms​
balu736 [363]

Answer:

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3 years ago
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Which of the following is an example of parasitism? *
sukhopar [10]

Answer:

1

Explanation:

In symbioses, parasitism is where an organism (small) benefits from

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4 0
4 years ago
Which of the following adaptions will help a plant survive in the desert?
Soloha48 [4]
A is correct. We know that water buildup is essential for plants (and all other organisms) that live in the desert due to its lack of moisture. So, the question is simply asking which adaptation will help a plant retain the most water in the desert. Here’s what makes each wrong or right:
A. Stem that stores water - Having stems that can retain a lot of moisture and water is absolutely necessary for plants that live in hot and dry biomes. The brief periods of rain in the desert make it easier for plants with water-storing stems to absorb the water and remain hydrated throughout their time. This is referred to as succulence, and most (if not all) plants in the desert are succulents. This is the correct answer!
B. Shallow root system - Many plants that live in deserts tend to have shallow root systems that allow them to quickly absorb and moisture in the environment — and because water never goes too far in the desert, they soak most of it up. Although this is helpful, it is better for plants that live in places with a lot of soil.
C. Large surface area - Having a large surface area is more useful for photosynthesis and may result in dehydration. This is wrong!
D. Flat broad leaves - Again, this adaptation is more favorable for plants that do not live in the desert because, as we know, photosynthesis requires water.
3 0
3 years ago
Hey can someone help me this is due today thank you! :D
Hunter-Best [27]

Answer:

Many cells: humans

Single cell: Bacteria known as protozoa

Explanation:

5 0
4 years ago
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