cell theory, scientists and cell structure

cell theory and structure

1. CELLS & How T hey Relate To The LIFE FUNCTIONS

2. The cell theory The cell is the basic unit of structure. All living things are made up of one or more cells.

3. The cell theory The cell is the basic unit of function. A cell is the smallest unit that is capable of performing all of the life functions.

4. The cell theory All cells come from pre-existing cells. Through mitosis, one cell makes two cells, etc.

5. Exceptions to the theory Viruses Can only reproduce Mitochondria & Chloroplasts Have their own DNA and can replicate

6. Cell membrane REGULATION Allows good stuff and small molecules in, bad stuff and LARGE molecules are “blocked”

7. Cell membrane EXCRETION all waste products exit through the membrane

8. Cell membrane TRANSPORT Materials are ABSORBED NUTRITION The ingestion of food

9. Cell membrane G R O W T H The membrane must increase in size to account for the increase in cytoplasm

10. chloroplasts SYNTHESIS Site of photosynthesis REPRODUCTION They have their own DNA and can make copies of themselves SYNTHESIS Make proteins at their own ribosomes

11. cytoplasm SYNTHESIS Lots of molecules are made here GROWTH An increase in the number of molecules = growth TRANSPORT Diffusion cyclosis

12. mitochondria RESPIRATION Site of aerobic respiration REPRODUCTION They have their own DNA and can make copies of themselves SYNTHESIS They make proteins at their own ribosomes

13. nucleus REPRODUCTION Mitosis starts here SYNTHESIS Makes new DNA - chromosomes REGULATION The DNA controls all cell activities

14. ribosome SYNTHESIS Makes proteins GROWTH An increase in the number of molecules leads to growth

15. vacuole EXCRETION Stores wastes NUTRITION Stores food

16. Plant vs. animal cells Plant Cells Onion Cell

17. Animal Cells

18. Levels of organization