A major difference between prokaryotic and eukaryotic cells is that (a) prokaryotic cells have a flagellum.

(b) eukaryotic cells have a nucleus.

(c) prokaryotic cells have cytoplasm.

(d) eukaryotic cells have ribosomes.

Differentiation of cells changes the nucleic information. true false

Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h,o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.

Adrought killed all the plants in an agricultural farmland. gradually, due to wind and some birds for. nearby areas, new plants started sprouting l. what stage of succession was taking place in the farmland? a) competition b) nudation c) ecesis d) reaction e) migration