Cell Theory and Organelle

2. An organelle filled with digestive enzymes that breaks down waste materials and dead organelles
4. An organelle that breaks down nutrients and produces energy (ATP) for the cell
7. The gel-like substance inside a cell that surrounds the nucleus and organelles
8. Type of vacuole that stores water, nutrients, or waste materials in plant cells
9. A specialized structure inside a eukaryotic cell that performs a specific function
11. An organelle that stores water, nutrients, or waste materials in animals cells
13. Also called the cell membrane; the outer boundary of a cell that controls what enters and exits
16. A network of protein fibers that gives the cell its shape, allows movement, and transports materials inside the cell
18. ____________ Reticulum: a network of membrane-bound tubes in the cytoplasm; rough ER has ribosomes and makes proteins; smooth ER makes lipids
19. An organism whose cells lack a nucleus and membrane-bound organelles

1. Allows some substances to pass through while blocking others
3. An organelle made of stacked, flattened sacs that modifies, packages, and ships proteins and lipids to their destinations
5. An organelle in plant cells and some protists that performs photosynthesis to produce glucose and oxygen using light energy
6. A rigid, protective layer outside the cell membrane in plant cells, fungi, and some protists
7. The smallest unit of life
10. The membrane-bound organelle in eukaryotic cells that contains the cell's DNA and controls cell activities
12. ______ bilayer: double layer of lipid molecules that forms the basic structure of the cell membrane
14. Theory The fundamental principle in biology stating that: (1) all living things are made of cells, (2) cells are the basic unit of life, and (3) all cells come from pre-existing cells.
15. A small organelle made of RNA and protein that reads messenger RNA and assembles proteins
17. An organism whose cells have a nucleus and membrane-bound organelles