Essential Idea: Eukaryotes Have Much More Complex Cell Structure Than Prokaryotes

1.2 Ultrastructure of Cells

Essential Idea: Eukaryotes have much more complex cell structure than Prokaryotes

Nature of Science: developments in scientific research follow improvements in apparatus – the invention of electron microscopes led to greater understanding of cell structure

Understandings: Flipped Video Notes

·  Prokaryotes have a simple cell structure without compartmentalization.

·  What are the general characteristics of Prokaryotes

·  What structures to Prokaryotes all have (include drawing and descriptions)

·  Prokaryotes divide by binary fission.

COMPLETE WORKBOOK ACTIVITY 12 p. 18 AND ACTIVITY 13 p. 19

·  What are the general characteristics of Eukaryotic Cells

·  Eukaryotes have a compartmentalized cell structure. (you need to know the structure and function of them all. Take notes from video and refer to page 21-22 of your textbook)

·  Compare Prokaryotic and Eukaryotic Cells (make a table or Venn Diagram)

COMPLETE WORKBOOK ACTIVITY 10 p. 16

·  Compare Plant and Animal Cells

·  Be able to identify structures within both from drawings as well as from light microscope and Electron Micrographs

·  Electron microscopes have a much higher resolution than light microscopes.

COMPLETE WORKBOOK ACTIVITY 14-17 p. 20-25

Applications:

Structure and function of organelles within exocrine gland cells of the pancreas and within palisade mesophyll cells of the leaf.

Skills:

Drawing of the ultrastructure of prokaryotic and eukaryotic cells based on electron micrographs.

Interpretation of electron micrographs to identify organelles and deduce the function of specialized cells.

Guidance - Drawings of prokaryotic cells should show the cell wall, pili and flagella, and plasma membrane enclosing cytoplasm that contains 70S ribosomes and a nucleoid with naked DNA.

Drawings of eukaryotic cells should show a plasma membrane enclosing cytoplasm that contains 80S ribosomes and a nucleus, mitochondria and other membrane-bound organelles are present in the cytoplasm. Some eukaryotic cells have a cell wall.

International-Mindedness - Microscopes were invented simultaneously in different parts of the world at a time when information travelled slowly. Modern-day communications have allowed for improvements in the ability to collaborate, enriching scientific endeavour.

TOK: The world that we inhabit is limited by the world that we see. Is there any distinction to be drawn between knowledge claims dependent upon observations made by sense perception and knowledge claims dependent upon observations assisted by technology?