Any one know what structure this is

How do chloroplasts set plants apart from other living things

Up to what percentage of the world's flora consisted of cycads during the triassic period? 100% 75% 50% 20%

Membrane vesicles containing an internal sodium chloride (nacl) concentration of 0.14 m are placed into separate beakers each containing a different solution. the first beaker contains 0.14 m sucrose, while the second beaker contains 0.14 m calcium chloride (cacl2). the temperature is 25°c. what is the solute potential inside the vesicles, expressed in units of mpa?