Once an RNA has been produced, by transcription and processing the information present in its nucleotide sequence is used to synthesize a protein.
It’s above the mesosphere, but below the exosphere. It extends roughly 90 km to 500/1,000 km above. There’s a lot of solar activity that influences temperature there.
<span>False. Sound *reflects* from the surfaces in a room, it doesn't "refract." Refraction is a distortion from passing through something (like light through glass).</span>
This statement is true. Only active transport can move molecules up a concentration gradient using energy. Passive transport on the other hand, uses no energy and occurs naturally. Therefore molecules can only move a concentration gradient.
