1. Microscopes allow us to see inside the cell
Microscope is an important tool.
Cells are diverse (very different)
Plants & Animals have EUKARYOTIC cells.

2. Microscope is an important tool
Light microscopes (using lenses to bend light & magnify) led to discovery of Cell Theory. Can magnify up to 1000 times and can view living cells.
Scanning Electron Microscope (SEM) & Transmission Electron Microscope (TEM) use electrons to produce images. Can magnify up to 1 million times but not view living organisms.

3. CELLS ARE DIVERSE
Every Cell has a protective covering, the CELL MEMBRANE.
CYTOPLASM is a gelatin-like fluid within the membrane where most of the cell work is done.
EUKARYOTIC cells have a nucleus containing its genetic material. (most multicellular)
PROKARYOTIC cells have its genetic material float throughout the cytoplasm with no nucleus. (most unicellular are prokaryotes)
ORGANELLES are any part of a cell enclosed within its own membrane.

5. PLANTS & ANIMALS HAVE EUKARYOTIC CELLS
Plant cells have CELL WALLS: tough, non-living covering outside of c.membrane
CHLOROPLASTS: found in plant cells; captures sun’s energy to make sugar
MITOCHONDRIA: in both plant & animal; use oxygen to release energy from food/sugar.
ENDOPLASMIC RETICULUM: system of winding membranes outside of nucleus; used in making & transporting proteins & parts of cell membrane

8. PLANT & ANIMALS HAVE EUKARYOTIC CELLS
RIBOSOMES: receives data from nucleus to build proteins to place in the E.R.
VESICLES: small packages that break off of E.R. to transport material to Golgi apparatus.
GOLGI APPARATUS: finishes processing materials made in the E.R.
VACUOLES: store water, waste & food. Large in plants, smaller in animal cells.
LYSOSOMES: small vacuole that holds digestive chemicals to break down materials in cell(food) or old cell parts.