31. Which phrase best describes parenthood? One size fits all
Trial & Error
Failure is not an option
Anything goes

List two modern organisms that have pentameral symmetry

Which is one example of a phenotypic change that is not genetic

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.