The study of chemistry begins with the basic unit of matter, the ? a. cell
b. atom
c. nucleus
d. enzyme

What is the role of fadh2 in cellular respiration

What are some possible short and long term medical concerns for crew members on longer space exploration trips

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.