Cells

Animal and Plant Cell Definitions

1. __Cell Membrane__- the outermost living structure of a cell. It controls the passage of materials into and out of the cell. 2. __Vacuole__- liquid-filled sacs that store materials that the cell has taken in or produced. 3. __Nuclear Membrane__ – the outermost part of the nucleus. 4. __Cytoplasm__ – the material in the cell that surrounds the nucleus. It carries out most of the activities in the cell. 5. __Cell wall__ – it is a rigid material, that is nonliving. It protects all of the living parts of the __ plant cell  __. 6. __Chloroplasts__- small green bodies; where photosynthesis occurs. 7. __Nucleolus__- a round body containing protein. It sends messages to the cytoplasm. 8. __Chromatin__- made up of very fine coiled threads. Before cell division and reproduction – they shorten and thicken into rods called Chromosomes. 9. __Mitochondrion__- oblong structure scattered in the cytoplasm. They produce energy for the cell. Sometimes called the Powerhouse of the cell. 10. __Nucleus__- round body near the middle of the cell; contains genes, which control all cell activity. 11. __Centriole__- a pair of small organelles near the nucleus. They assist in cell division.

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