What is the difference between living and non-living? Be sure to describe the characteristics of living things in your answer.

What organelle other than the nucleus houses dna in a eukaryotic cell?

Which direction does the energy flow in this energy pyramid ?

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.