What is one difference between a cell wall and a cell memebrane? a) cell walls have gap junctions. cell membranes have plasmodesmata. b) cell walls act as a boundary that nothing can pass through. cell membranes allow materials in and out of the cells. 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 membranes are made of proteins and phospholipids. need ,,

Write a paragraph at least 5 sentences “why all vaccinations should be mandatory”

Asolution of an enzyme and a substrate was placed in a water bath and the temperature of the reaction was raised gradually. the graph shown was plotted at the end of the experiment. what can be concluded from the graph? a) temperature has no effect on the activity of the enzyme. b) the effect of temperature on the enzyme is unpredictable. c) the enzyme shows increased activity up to a certain temperature. d) the activity of the enzyme is inversely proportional to the temperature.

How is the carbon cycle related to global warming ?