An egg is protected by its outer shell. however, the shell also allows moisture and air to pass through. which cell structure performs a similar function?
a: cell membrane
b: cytoplasm
c: nucleus
d: vacuole

What is the average speed of a car that traveled 300.0 miles in 5.5 hours

One function of the poly-a tail on eukaryotic mrna sequences is to the mrna be transported from the nucleus to the cytoplasm. prokaryotic mrna also has a poly-a tail. choose the best explanation of the prokaryotic poly-a tail. a. prokaryotic poly-a tails are composed of a different molecular structure compared with eukaryotic poly-a tails. b. prokaryotic poly-a tails have the same functions as eukaryotic poly-a tails, because this process is highly conserved throughout different species. c. prokaryotic poly-a tails aren't important, because prokaryotes don't have nuclei. d. prokaryotic poly-a tails have other functions,because prokaryotes don't have nuclei.

What will happen if two of the base pairs of the stand of the dna are switched