Which of the following statements describes the structure of the plasma membrane? ( WILL MARK BRAINLIEST ) PLEASEEE help asap!!

A. The plasma membrane is made mainly from carbohydrates that give the cell energy

B. It is made primarily of cholesterol that allows the cells to communicate with others

C. It is a lipid bilayer with the hydrophobic area pointing inward, and the hydrophilic area facing outward

Pleaseee help ;__;

Which situation is an example of not doing work? lifting a couch throwing a baseball running up stairs carrying a box

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.

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic