Download Prokaryotic and Eukaryotic Cells

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Date: Sept. 20th/2011
• Absence of
organelles.
• There is no true
nucleus.
• Some bacteria have
flagellum.
Ultrastructure of E. coli.
2.2.1 Draw and label a diagram of the ultrastructure of
Escherichia coli (E. coli) as an example of a prokaryote
What are the functions of these prokaryotic cell parts?
2.2.2 Annotate the diagram from 2.2.1 with the
functions of each named structure
2.2.3 Identify structures from 2.2.1 in electron
micrographs of E. coli
Prokaryotic cells divide by
binary fission
• Asexual method of reproduction.
• The cells produced are genetically identical (clones).
2.2.4 State that prokaryotic cells divide by binary
fission
1
8
7
2
6
5
3
4
2.3.1.Draw and label a diagram of the ultrastructure
of a liver cell as an example of an animal cell
2.3.2 Annotate the diagram from 2.3.1 with the
functions of each named structure.
http://www.ucmp.berkeley.edu/alllife/eukaryotamm.html
2.3.3 Identify structures from 2.3.1 in electron
micrographs of liver cells.
Which structures can you
identify in this falsecoloured TEM
(transmission electron
microscopy) image?
2.3.3 Identify structures from 2.3.1 in electron
micrographs of liver cells.
Magnification x47,500 at 10X8 cm size.
http://www.sciencephoto.com/media/214698/enlarge
Magnification x47,500 at 10X8 cm size.
ribosomes
endoplasmic reticulum (ER)
mitochondria
Nuclear membrane
Nucleus
http://www.sciencephoto.com/media/214698/enlarge
2.3.3 Identify structures from 2.3.1 in electron
micrographs of liver cells.
What are the differences between prokaryotic and eukaryotic cells?
2.3.4 Comparison of prokaryotic and eukaryotic
cells
1
Differences between
plant and animal cells
2
3
Can change
shape, usually
rounded
fixed and
4 rather regular
shape
5
2.3.5 State three differences between plant and
animal cells
Extracellular matrix: refers to
components outside the cell.
extracellular matrix protein
(fibronectin, green)
cytoskeletal microfilaments
(actin, red)
cytoskeletal microfilaments
(actin, red)
PLANT CELLS
• Prevents excessive uptake of
water by the cell
ANIMAL CELLS
• Support: Provides structural support
for the integrity of the tissue or organ.
2.3.6 Outline two roles of extracellular
components