1. 2.3 Eukaryotic Cells
Plant Cell
Animal cell

2. Draw and label a diagram of the ultrastructure of a liver cell as an example of an animal cell.
The diagram should show ribosomes, rough endoplasmic reticulum (rER), lysosome, Golgi apparatus, mitochondrion, cytoplasm and nucleus.
Annotate the diagram from with the functions of each named structure

3. Electron micrographs of liver cell
Cytoplasm
Mitochondrion
Nucleoplasm
Nucleolus
Nuclear envelope
Golgi apparatus

4. Electron micrographs of a plant cell
Cell Wall
Chloroplast
Nucleoplasm
Nucleolus
Nuclear envelope
Plasma membrane
Cell vacuole

5. Function(s) of cell Organelles
ribosomes – protein synthesis rough endoplasmic reticulum (rER) – synthesis of proteins to be secreted lysosome – holds digestive enzymes Golgi apparatus – for processing of proteins mitochondrion – for aerobic respiration nucleus – holds the chromosomes

6. Comparison between prokaryotic and eukaryotic cells
Prokaryotic Cell
Eukaryotic Cell
DNA in cytoplasm / nucleoid /
no nucleus
DNA in nucleus / nucleus present
naked DNA
protein associated with DNA
circular DNA
linear chromosomes/DNA molecules
Mitochondria present
no mitochondria
70S ribosomes present
80S ribosomes present
no membrane bound organelles
internal membranes form organelles
pili present
pili absent
plasmids sometimes present
plasmids absent
cell wall present
cell wall only present in plants/fungi
flagella solid
flagella flexible/membrane-bound

7. Differences between plant and animal cells
Plant Cells
Structure
Cannot produce its own food X
Chloroplast 
Can produce its own food.
Flexible, can easily change shape. X
Cell Wall
Rigid, cannot easily change shape. 
Does not store large amounts of liquid. Smaller size of cell.
Central Vacuole
Stores large amounts of liquid (juice). Larger size of cell. X 
Carbohydrates stored as glycogen.
Carbohydrates stored as starch.
Storage of carbohydrates

8. Roles of extracellular components
Plant cell wall
Animal extracellular matrix
composition: cellulose microfibrils
Functions:
provides physical protection
prevents excessive water uptake precluding bursting in hypotonic environment
produces turgor pressure which holds whole plant up against the force of gravity
Maintains the shape of the cell
animal cells secrete glycoprotein that form the extracellular matrix
Functions:
Support – bone and cartilage cells are embedded in the matrix
adhesion between cells - skin cells sit on a sheet of proteoglycan (protein + polysaccharide )
cellular movement