What type of cell has no membrane bound cell? a eukaryotic plant cell? a prokaryotic cell? or a eukaryotic animal cell?

Why did rutherford say that bombarding atoms with particles was like "playing with marbles" what

Why are fossils not found in igneous rocks? igneous rocks are made from cooling of lava or magma. igneous rocks are found too deep underground. igneous rocks are too dark in color to contain fossils. igneous rocks are too dense to contain fossils.

With regard to enzymes, key is to lock as a) substrate is to activation energy eliminate b) product is to substrate. c) enzyme is to active site. d) substrate is to active site.