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protective layer that protects
the cell and regulates interactions between the cell and the environment
gelatinlike material inside every cell, where most of a cell's life processes (chemical reactions) occur
tough, rigid outer covering that protects the cells of plants, algae, fungi, and most bacteria (also gives it shape)
it directs all the cells activities (control center, usually the largest organelle in a cell
green organelles in the cytoplasm of plant cells that use light energy to make sugar from carbon dioxide and water
a series of folded membranes in which materials can be processed and moved around inside of the cell
stacked, flattened membranes that sort proteins and other cellular substances and package them into areas inside the cell
summary of scientists' observations and conclusions about cells
1. all organisms are made up of one or more cells
2. the cell is the basic unit of organization in organisms
3. all cells come from cells
a condition that results from the disruption in function of one or more of an organism's normal processes
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