Aeukaryotic gene was inserted into the dna of a bacterium. the bacterium then transcribed this gene into mrna and translated the mrna into protein. the protein produced was useless; it contained many more amino acids than the protein made by the eukaryote. why?

Eukaryotic genes are more complicated than bacterial genes because many of them have introns - these are stretches of DNA that need to be spliced out of the mRNA prior to translation. If you clone the original DNA gene sequence into a bacterium, it doesn't have splicing machinery - so you end up with many more amino acids than the protein made by the eukaryote (and likely a nonsense protein at that!).

Idont understand i'm sorry

Answer:

the statements that apply here about binary star system are

"have stars that might appear to wobble"

"often have one star that is brighter than other"

a binary star is a star system consisting of two stars revolving around their common barycenter. systems of two or more stars are called multiple star systems.