1. Cells

2. Biology Section 7.3

3. All cells contain organelles BUT not all organelles are surrounded by membranes Prokaryotes – do not contain any organelles with membranes Most of these are unicellular like bacteria

4. Eukaryotic cells – contain membrane- bound organelles Most of these are multicellular Because organelles have distinct compartments, chemical reactions can be carried out at the same time in different organelles.

5. Right: Colorized micrograph of a prokaryotic cell of the bacterium. Left: Colorized micrograph of a eukaryotic cell of the green algae.

6. Eukaryotic cells are generally 100x larger than prokaryotic cells.

8. Definition: Flexible boundary of cell Function: Allows water, and nutrients to enter and waste to leave (selectively permeable) Location: Between cell and environment

9. Function: Support and protection to plant cells, fungi, bacteria Location: Outside the plasma (cell) membrane Definition: Inflexible barrier in plant cells

10. Function: Controls the activity of the organelles Location: Found inside cell surrounded by cytoplasm Definition: Organelle that manages all cell functions, contains DNA

11. Definition: Strands of genetic material (DNA and proteins) Location: Found in nucleus Function: information center, condenses into chromosomes

12. Definition: Organelle that produces ribosomes Function: Makes ribosomes Location: Nucleus

13. Function: Site where the cell makes proteins Definition: made of RNA and protein, smallest organelle Location: In the cytoplasm

14. Function: Separates the nucleus from the cytoplasm; porous- lets things in and out Definition: Double membrane around the nucleus Location: Around the nucleus

16. Definition: Clear, gel-like fluid inside a cell Function: Suspends organelles, the site of chemical reactions Location: Inside the cell

17. Function: Site of cellular chemical reactions, transports materials through out cell Definition: Series of folded membranes Location: Found in cytoplasm

18. There are two types of endoplasmic reticulum- rough and smooth. Rough ER Definition: ER that has ribosomes attached to the surface Function: where proteins are made. Smooth ER Definition: no ribosomes attached, surface is smooth Function: Production and storage of lipids

19. Definition: Flattened stack of membranes Function: Sorts and packs proteins then sends them through out cell Location: In the cytoplasm

20. Definition: Membrane- bound compartments Function: Storage for food, water, enzymes, and waste Location: Usually in plant cells

21. Function: Digest old organelles, food particles, viruses or bacteria Definition: Organelle that contains digestive enzymes Location: In the cytoplasm

22. Ever wondered how a tadpole gets rid of its tail and grows legs?? It’s lysosomes digest the cells in the tail, and these molecules are released to build different cells, like legs!

23. Function: Capture light energy and convert it to chemical energy Location: Found in plant cells Definition: Organelle where photosynthesis occurs

24. Location: In the cytoplasm of plant and animal cells Function: Turns food into energy (ATP) for the cell Definition: Organelle where cellular respiration occurs

25. Function: Maintains the shape and supports the cell Definition: Network of tiny rods and filaments Location: In the cytoplasm

26. Definition: Organelle that aids in cell division Location: In the cytoplasm Function: Helps cells divide

27. Function: Locomotion and feeding Definition: Short hair- like projections Location: Outside the cell

28. Definition: Long tail- like projection that move like a whip Function: Movement Location: Outside the cell

29. Cells  Tissues  Organs  Organ systems  Organisms