Transcript Topic 1.2 Notes

TOPIC 1: CELL BIOLOGY
1.2 Ultrastructure of Cells
• What do you know?
• What questions do you have?
Read & Consider
1 – INVENTION
1.2.3
Light Microscope vs. Scanning Electron Microscope
Resolution:
• Light Microscope – 0.2µm
• SEM – 0.1nm
The world that we inhabit is limited
by the world that we see. Is there a
distinction to be drawn between
knowledge claims dependent upon
observations made by sense
perception and knowledge claims
dependent upon observations
assisted by technology?
• What do you know?
• What questions do you have?
• What does “prokaryote” mean?
2 - PROKARYOTES
Read & Consider:
1.2.1
Draw, Label, and Annotate  Prokaryote
 Cell wall
 Plasma membrane
 Nucleoid
 70S ribosomes
 Pili
 Flagella
Binary Fission  Prokaryotic chromosome is
replicated.
 Copies of the DNA attach to
adjacent ends of the cell.
 Membrane grows to separate
copies.
 Bacteria grows to twice its size
then the membrane grows inward.
Parent & daughter
cells are identical.
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•
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What
What
What
What
do you know?
questions do you have?
does “eukaryote” mean?
are two categories when discussing eukaryotes?
3 - EUKARYOTE
Read & Consider:
1.2.2
Draw, Label, and Annotate Eukaryote
(animal & plant)
Plasma membrane, cytoplasm, 80S ribosomes,
nucleus, mitochondria, endoplasmic reticulum, Golgi
apparatus, cell wall, chloroplasts, central vacuole,
lysosomes, and vesicles.
Structure  Function
 Exocrine Gland Cells of
the Pancreas
 Palisade mesophyll
plant cell
1. Using iPads – research the specific function of
each of these cells.
2. Study the electron micrographs of each on pages
14-15.
3. How does the density and location of each
organelle assist the cell in its specific job?
4. Practice identifying organelles using only an
electron micrograph.
Compare, with the aid of a diagram, the structure of
generalized prokaryotic and eukaryotic animal cells.
(Total 8 marks)
Marks must be awarded if comparisons
are made as either annotations to the
diagram or in narrative or table form.
DESIGN A LAB TO TEST A FACTOR
AFFECTING BACTERIAL REPRODUCTION.
Exploration : Analysis : Evaluation
Works Cited
 Furness, Dr David. "Plant Cell, SEM." Fine Art America.
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Keele University, n.d. Web. 10 July 2014.
Kim, Oliver. "Electron Microscopes vs. Optical (Light)
Microscopes." MicrobeHunter Microscopy Magazine. N.p.,
n.d. Web. 08 July 2014.
Reis, Klari. "Petri Projects." Klari Reis. N.p., n.d. Web. 11
July 2014.
"The Relationship between Energy and Mass." The
Relationship between Energy and Mass. Principles of
General Chemistry, n.d. Web. 10 July 2014.
Walpole, Brenda. "Biology for the IB Diploma - Second
Edition." Cambridge University Press, Print. July 2014.