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Hunter-Best [27]
3 years ago
6

How penicillin discovered in your own words??​

Biology
1 answer:
yuradex [85]3 years ago
6 0

When Alexander Fleming came back from his vacation to his lab... He accidently discovered that his petri dish was covered with this penicillin...

After he discovered he came to know that penicillin kills the bacteria staphylococcal.

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One of the virulence factors produced by Group A Streptococcus is __________, which can kill neutrophils, the immune system’s fi
uranmaximum [27]
<span>Streptococcus is a genus of coccus (spherical) Gram-positive bacteria belonging to the phylum Firmicutes[3] and the order Lactobacillales (lactic acid bacteria). Cell division in this genus occurs along a single axis in these bacteria, thus they grow in chains or pairs, hence the name—from Greekstreptos, meaning easily bent or twisted, like a chain (twisted chain). Contrast this with staphylococci, which divide along multiple axes and generate grape-like clusters of cells.)</span>
3 0
3 years ago
A scientist is studying a section of exposed sedimentary rock layers that are near a fault line (a
Umnica [9.8K]

Answer:

Principle of cross-cutting relationships

Explanation:

The geologic principle that will provide the most profound explanation to this problem is the principle of cross-cutting relationships.

It states that "features that cross-cuts rocks are younger than the layer they cut through".

Some of these features are intrusions, faults and joints.

The logic behind this reasoning is that without the rock in place, the cross-cutting event wouldn't have been recorded.

We can liken this to a fracture on the wall of a building. If the wall is not erected, there wouldn't be any fracture. Therefore, the fracture is far younger than the wall.

4 0
3 years ago
If each couple has only two offspring, this results in
ratelena [41]
Less people and THE END OF THE WORLD 
3 0
3 years ago
A stand of a single tree species typically planted in straight rows is known as a...
vichka [17]

Answer:

Plantation Forestry.

Explanation:

I found the definition linked to this word! :)

7 0
3 years ago
Which spider spins a lasso to catch its prey?
77julia77 [94]
The correct answer is Bolas spider. Bolas spiders usually spins a lasso to catch their preys. Instead of secreting the normal web which other spiders secrete, it secrete a stick capture net called bolas.
4 0
4 years ago
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