Choose one of the four cycles discussed in class and choose an ecosystem: a forest, desert or pond and draw a labeled diagram that traces the path of a water molecule or nutrient atom (carbon, nitrogen, or phosphorus) through that ecosystem. The path should have at least three steps and include living and non-living things. SOMONE HELP ME WITH THIS

2points what is the term for a female reproductive cell? a. egg b. chromatid c. allele d. fertilization

25. what does meiosis create? haploids or diploid? somatic cells or gametes?

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.