What is one difference between a cell wall and a cell membrane? a. call wall have gap junctions. cell membrane have plasmondesmata b. cell walls act as a boundary that nothing can pass through. cell membrane allow materials in and out of cell. c. cell walls are found inside the cell membrane. the cell membrane is the outermost structure of a cell. d. cell walls are made of cellulose. cell membrane are made of protein and phospholipids

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?