1. Prokaryote
The prokaryotes are a group of organisms whose cells lack a cell nucleus.

2. Eukaryote
A eukaryote is an organism whose cells contain complex structures enclosed within membranes.

3. Organelle
Tiny structures that carry out functions necessary for the cell to stay alive

4. Nucleus
Control center of the cell

5. Ribosome
small organelles that make proteins

6. Cytoplasm
region between the cell membrane and the nucleus

7. Vacuole
an organelle that stores food, water, and other materials needed by the cell

8. Lysosome
contain substances that break down large food particles into smaller ones

9. Chloroplast
A structure in the cells of plants and some other organisms that captures energy from sunlight and uses it to produce food.

10. Mitochondria
organelles that convert the chemical energy stored in food into compounds that are more convenient for the cell to use

11. Cilia and Flagella

12. Chlorophyll
Chlorophyll is a green pigment found in cyanobacteria and the chloroplasts of algae and plants.

13. Cell Wall
A rigid structure that surrounds the cells of plants and most bacteria

14. Plasma Membrane
thin, flexible barrier around a cell; regulates what enters and leaves the cell

15. Microfilaments/Microtubules
Microfilaments or actin filaments are the thinnest filaments of the cytoskeleton, a structure found in the cytoplasm of eukaryotic cells.
Microtubules are a component of the cytoskeleton, found throughout the cytoplasm. These tubular polymers of tubulin can grow as long as 25 micrometres

16. Golgi Apparatus
receives proteins and other newly formed materials from the ER, packages them, and distributes them to other parts of the cell or to the outside of the cell

17. Endoplasmic Reticulum
network of membranes within a cell's cytoplasm that produces a variety of substances

18. Chromatin
contains information for directing a cell's activities

19. Centrioles
A centriole is a cylinder shaped cell structure found in most eukaryotic cells, though it is absent in higher plants and most fungi.