True or False) All cells have a plasma membrane comprised of phospholipids, cholesterol, and membrane proteins, but plants cells have an additional external cell wall made primarily of cellulose. 2- (True or False) Deoxyribose lacks an oxygen bound to the 2` carbon when compared to ribose. 3-(True or False) An initial step of photosynthesis is to utilize the sun’s energy to split water molecules into their component hydrogen and oxygen atoms.
1- (True or False) All cells have a plasma membrane comprised of phospholipids, cholesterol, and membrane proteins, but plants cells have an additional external cell wall made primarily of cellulose.
2- (True or False) Deoxyribose lacks an oxygen bound to the 2` carbon when compared to ribose.
The plasma membrane of a cell is the outermost semipermeable layer which consists of lipids, mostly phospholipids and membrane proteins. The main function of the plasma membrane is to protect the cell from the external environment and regulates the movement of substances in and out of the cell. Cholesterol is also a class of membrane lipid, it is abundantly present in the plasma membrane of mammalian cells. Cell wall is an outer covering of plant cells that surrounds the plasma membrane and provides protection against mechanical and osmotic stress.
Hence the answer to question 1 is true
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