Students are comparing the parts of a cell to the parts of a city. which of the following would provide the best comparison to the nucleus of a cell? A- Power plant - provides energy needed by all parts of the city
B - City Hall - directs necessary activities throughout the city
C - Waste management - collects and removes waste
D - Border patrol - regulates what enters and leaves the city

Hurry which of these is true about index fossils? a) are very scarcely found b) used as guides in relative dating c) found in the youngest layer of the rock d) used as reference points in absolute dating

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.

If an organ has six haploid chromosomes, how many chromosomes are present. 6 12