A cell wall is a structural layer that surrounds some types of cells, situated outside the cell membrane. It can be tough, flexible, and sometimes rigid. It provides cells with both structural support and protection, and also acts as a filtering mechanism. Cell walls are present in plants, fungi and prokaryotic cells, where a major function is to act as pressure vessels, preventing over-expansion when water enters the cells. Cell walls are absent from mycoplasmas.
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Explanation:
d two haploid cells that are genetically diffrent
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Scientists found evidence such as fossils that were almost 4 billion years old, concluding that life on earth began after that.
Explanation:
I believe that the similarity between their experiments was that b<span>oth experiments showed that living things only come from living things.
Pasteur's experiment involved a mixture resembling a broth, the one used in soups. He observed what the broth would look like after several weeks, and saw that in one of the containers where broth was, germs started to appear. He thus concluded that germs can only come from other germs.
On the other hand, Redi experimented with rotten meat. His view was that maggots in rotten meat cannot just appear there spontaneously, but are rather created by other maggots.</span>
