- Heterotrophs
- Derive organic nutrition externally
- Common ancestor are protists
-
Microbrial eukaryotes
- Animals
- Eukaryotic
- Multicellular
- Heterotrophs
- Internal processes to break down food.
- Most can move (except for sponges).
- Heterotrophs
- Filter feeders
-
Sponges
- Herbivores
-
Goats
- Predators
-
Owls
- Parasites
-
Lampreys
- Detritivores
-
Shrimp
- Omnivores
-
Humans
- Carnivores
-
Bats
- Cell Surface of an Animal
- No cell wall usually
- Made of glycoprotein, carbs, proteins, cytoskeleton
- Extracellular Matrix ECM
- Exists just outside the cell membrane
- Contains collagen
-
Triple-alpha helix
- Contains proteoglycans
-
Proteins + Carbs
- Tight Junctions
- In animal cells
- Epithelial cells
- Proteins connect neighboring cells tightly
-
Prevents leaky gut
- Barrs movement of dissolved materials between cells.
- Desmosomes
- In animal cells
- Link adjacent cells tightly, but permit materials to pass in the intercellular space.
- Gap Junctions
- In animal cells
- Let adjacent cells communicate
- Allows for sharing ions, signals.
- Have connexins (channel proteins) that span into adjacent cell membranes (hydrophilic channel) for sharing nutrients/signals.
- Sponges
- Are primitive animals.
- Filter feefers
- Beating flagella moves water
- Phagocytosis (choanocytes are phagocytic feeding cells).
- Respiration
- Structural Spicules
- Are monoblastic (one tissue layer)
- Sedentary
- Spongin - a modified collagen protein
- Reproduce sexually (fragmentation) or asexually (sperm).
- Diploblast
- 2 tissue layers
- Usually radial symmetry
- Tripoblast
- 3 tissue layers
- Bilateral symmetry