Answer:
Diffusion of solutes in liquids is very important in many industrial processes, especially in such separation operations as
1) liquid–liquid extraction or solvent extraction,
2) gas absorption
3) distillation
4) Diffusion is important to cells because it allows them to gain the useful substances they require to obtain energy and grow
5)and lets them get rid of waste products.
Some charophytes are group of organisms should feature cell division most similar to that of land plants.
<h3>What is evolution?</h3>
Evolution is a process of change in a population through genetic variation over time. Evolution involves change over time and descents from common ancestor.
Types:
- Convergent evolution
- Divergent evolution
Th u, Some charophytes are the correct answer.
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The pectines on a male scorpion is longer because they also use it to find a female to mate with.
The most important idea is that the genetic material of any organism must be able to accurately replicate itself at least every generation (or for multicellular organisms at each cell division).
Base pairing (A-T or U and C-G)allows DNA and RNA (eg in polio virus, see Wikipedia page on RNA dependent RNA polymerase) to create a copy of themselves, when the appropriate enzymes are present. Proteins have no way of making a copy of themselves.
Stability is probably the main reason DNA is the most common genetic material. DNA has no enzymatic activity and was probably selected for to maintain the integrity of the genetic material (rather than having to perform a function for the cell/virus, during which it may be destroyed). The double helix structure also protects its integrity, and proofreading enzymes have also evolved which correct most of the mistakes made at DNA replication. RNA viruses don't have this mechanism- which could be said to be an advantage (as they can rapidly change and therefore avoid their hosts' immune systems), however in non-parasitic organisms most mutations in a gene would lead to a loss of an essential function and the extinction of that genome.
I don't think either of these reasons are relevant, but I think the main reasons retroviruses convert their RNA to DNA are so they can use the host cell's replication machinery (this was they do not need to encode as many genes), and secondly they need avoid the antiviral mechanisms of the cell, which would destroy any double stranded RNA molecules found (even if the virus was single stranded, dsRNA would have to be produced at replication).
