There are many types of proteins found in the cell membrane. These proteins interact with internal and external environment. A. True
B. False

What best explains the inability for life to exist in earth early atmosphere

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.

If a grape were placed in a hypertonic solution what would happen and why?