A book rests on a table. The force of gravity pulls down on the book with a force of 25 Newtons. What prevents the book from accelerating downward at 9.8 m/s??
A
The table presses back up on the book with an equal and opposite reaction force of 25 N.
B
The table and book together are both accelerating down at 9.8 m/s.
The inertia of the book holds it up.
С
D
The table presses back up on the book with a force greater than 25 N.
10.)

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.