IB Biology - Prokaryotic and eukaryotic cells
Chapter 1.2 Ultrastructure of cells
Prokaryotes have a simple cell structure without compartmentalization.
Eukaryotes have a compartmentalized cell structure.
Application: Structure and function of organelles within exocrine gland cells of the pancreas and within palisade mesophyll cells of the leaf.
Application: Prokaryotes divide by binary fission.
Skill: Drawing of the ultrastructure of prokaryotic cells based on electron micrographs.
Skill: Drawing of the ultrastructure of eukaryotic cells based on electron micrographs.
Skill: Interpretation of electron micrographs to identify organelles and deduce the function of specialized cells.
Compartmentalization = organelles are separated by the membrane to perform specific function independently and contemporarily within a cell
binary fission = asexual reproduction for prokaryotic cells, the DNA replicate and separate contemporarily
The Structure always present:
you can see the 70S or 80S in front of the ribosome, actually "S" is Svedberg unit, a description of ribosome size. The "S" represents the time to sediment the ribosome under centrifugation.
The additional structure (present sometimes):
Animal Eukaryotic Cells
Plant Eukaryotic Cells
Summary of Prokaryotes and Eukaryotes
The list summarizes the differences and similarities of the prokaryotes and eukaryote
Some concepts you need to clarify:
Drawing of Cells
Under Light microscope:
Under Electron microscope:
In this IB biology topics, you have to
That is the end of this topic!
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Written by Queenie l IBDP Biology Specialist @ TUTTEE
1. Openstax, https://openstax.org/books/microbiology/pages/3-3-unique-characteristics-of-prokaryotic-cells
2. Biology dictionary, https://biologydictionary.net/eukaryotic-cell/
3. Pngitem, https://www.pngitem.com/middle/imoihoi_ultrastructure-of-a-eukaryotic-cell-a-plant-cell/
4. Pinterest, https://www.pinterest.com/pin/374643262734997164/?nic_v1=1aKbFeP8%2BkYXZWkHqPqTB4PrlU1xDRC%2FKr9m5l5y37XeWKWv12E4820%2BWg37fMzunU
5. Wiki, https://simple.wikipedia.org/wiki/Binary_fission
6. Brenda Walpole (2014). Biology for the IB Diploma (Second Edition). Cambridge University Press.
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