Pre – AP Biology

Types of Cells and Cell StructuresPart 1

Henri DutrochetCell is the basic unit of life

Theodor SchwannAll animals are composed of cells

Matthias SchleidenAll plants are composed of cells

Rudolf VirchowAll cells come from pre-existing cells

Robert HookeHis simple microscope

Anton von LeeuwenhoekCompound microscope

Anton’s Microscope

Modern Light Microscopes

Microscopic Resolution

Different types of light microscopes

Electron MicroscopeThey can be very large and expensive

Inside an electron microscope

Images from an electron microscopeTransmission (left)/Scanning (right)

Prokaryotic Cell Structure

Eukaryotic Cell (plant)

Eukaryotic Cell (animal)

Surface Area to Volume relationship

Pre – AP Biology

Types of Cells and Cell StructuresPart 2

Nucleus Structure

Chromatin vs. Chromosomes appearance within the cell.

Ribosome Structure

Pre – AP Biology

Types of Cells and Cell StructuresPart 3

Endoplasmic Reticulum

Golgi Apparatus

Lysosomes

Central Vacuole of a plant

Contractile Vacuole of aquatic single celled organismsUsed to get rid of excess water so that the cell does not

burst

Endocytosis

Mitochondrial StructureNotice the two different “spaces”

Chloroplast StructureNotice the two different “spaces”

Lynn Margulis

Endosymbiont Hypothesis

Pre – AP Biology

Types of Cells and Cell StructuresPart 4

Cytoskeleton

Microtubules - Centrioles

Microtubules – Cilia or Flagella

Microfilaments used in various cells for movement

Actin and Myosin in Muscle tissue

Muscle Tissue under the Microscope

Can you see the actin and myosin bands?

Plant cell wall structure

Extra-cellular matrix of animal cells

Cellular junctions helping to make tissues from individual cells

Cells from your lung tissues

Junctions between plant cells

Cells are the sum of it’s partsThey need all parts to function properly