Data must be considered valid for scientists to trust conclusions. which is the best way to increase the validity of data in an
experiment?

a. get many scientists' opinions of the data.

b. measure data in sl units.

c. carry out two or fewer trials.

d. record only the most significant observations.

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.

What organ is the first to receive nutrients that have been absorbed from the digestive tract?

Match each phylum or class to its correct characteristic