Microscopes allow us to see inside the cell

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.

4
(No Transcript)
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
  suns 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

6
(No Transcript)
7
(No Transcript)
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.