4 years ago

What is the outermost feature of the sun called?

1 answer:

3 0

The Corona is known as the outermost feature of the Sun. The temperature of the Corona is about 900,000 degrees Fahrenheit! It can't be seen with the naked eye!

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Gene expression in eukaryotes can be regulated at many different levels. List the different levels of regulation, and explain wh

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Answer:

Transcription, mRNA (processing, transport, localization and stability), translation.

Explanation:

Transcription is regulated in two levels, though chromatin regulation (methylation and acetylation) to loose or increase histone's affinity to DNA and through cis and trans elements such as promoters, enhancers, and silencers (cis) to active/deactivate and RNA polymerase and transcription factors and co-factors (trans).
mRNA can be regulated using poly-A tails or 5'-caps to shorten or give them more time before they degrade, it could also be spliced to eliminate introns.
In the translation stage, the regulation occurs during the initiation through a scanning procedure that ensures the 40s ribosomal subunit bind correctly to the untranslated portion of RNA

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What is bones made of

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Collagen and calcium

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Trey is looking at a cell under the microscope. It is attached to many other cells, and it has a nucleus and membrane bound orga

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