Agerman scientist, used a microscope to study plant parts and concluded that all plants were made of cells. a german doctor, hypothesized that new cells form already existing cells. 3. all cells have organelles that perform specific functions. these organelles can be observed with the ise of a forms the outer boundary of the cell and allow only certain materials into and out of the cell. the cell. the genetic blueprints that control the operations of the cell in the nucleus. a. it is made up of proteins and an “envelope” that separates the nucleus from the cytoplasm. a folded membrane that moves materials around the cell. of protein synthesis. stacks of membrane-covered sacs that package and move proteins to the outside of the cell. where food molecules are broken down a d energy is released for the cell. -filled storage areas in cells. 13.what structures are found in plant cells that are not found in animal cells? what are these structures used for?

(me out over the last several centuries, scientists have made the following broad observations while investigating several branches of the life sciences: -the fossil record shows that different types of organisms have existed at different times in earth's history. -many organisms have similar body structures that seem to be adapted to different ways of living in their environment. -organisms of different species often share similarities in stages of embryonic development. -many species share genetic similarities, and almost all organisms use the same basic building blocks to construct proteins. -often, the extent of two species' similarities can be predicted from their geographic closeness to each other. -a great deal of change has been observed among species that have experienced strong selective pressures through many generations. scientists have carefully considered and rigorously tested the observations listed above. when scientists offer a of these observations, they are making 1.) testable explanation, deductive explanation 2.) scientific interference, scientific law