1.2 Ultrastructure of cells

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1.2 Ultrastructure of cells



1.2 Concept mapping of the Introduction to cells

1.2 Knowledge control of Introduction to cells

1.2 Ultrastructure of cells presentation

1.2 Teachers notes

1.2 Animations & Videos of Prokaryotic Organisms   

1.2 Cell organelles videos

1.2 Worksheets

1.2 ICT Worksheets

1.2 Articles

1.2 TOK Articles





Ultrastructure of cells

1.2 Ultrastructure of cells

Essential idea:

1.2.1    Eukaryotes have a much more complex cell structure than prokaryotes.

The inner life of the cell/ Awesome animation

Inner life  of cell with articles

Amazing cells

Nature of science:

1.2.2     Developments in scientific research follow improvements in apparatus—the invention of electron microscopes led to greater understanding of cell structure. (1.8)

Cell Image Library


Microbiology Bytes: Antonie van Leeuwenhoek

Virtual Histology lab


1.2.3   Prokaryotes have a simple cell structure without compartmentalization.

Lakes under the ice: Antarctica’s secret garden

The composition of a bacterial cell


The Virtual Bacterial ID Lab

Bacterial chromosome

Gram stain

Conjugation, Transformation, Transduction, Transposons

1.2.4   Eukaryotes have a compartmentalized cell structure.

Peranema w/ flagella

Paramecium Caudatum; Gross Anatomy and Contractile Vacuole


Ameoba in motion

Cell structure

Cell types with their structure

Cell structure

Plant and animal cell organelles

Cell animations

Khan Academy

Cell structure,tissues and organs

Golgi &Endoplasmic reticulum

Endomembrane system

Endomembrane protein synthesis

Microtubule sliding

Microtubule transport

Cytoplasmic streaming


Lysosome formation animation

Lysosome function

Phagocytosis and lysosomal degradation

Cell Parts  

Cilia and flagella movement

Article about cell

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

Amazing cells supplemental materials

Applications and skills:

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

1.2.7  Application: Prokaryotes divide by binary fission.

Binary fission  

3D CELL/ İTunes/Apps

Cell Atlas/İTunes/Apps

1.2.8 Skill: Drawing of the ultrastructure of prokaryotic cells based on electron micrographs.

Prokaryotic cells

1.2.9 Skill: Drawing of the ultrastructure of eukaryotic cells based on electron micrographs.

Eukaryotic cells

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

Cell Image Library

Identifying Eukaryotic Animal Cell Organelles

Play the Incredible Megacell Game

Cell  quiz practice

Cell shape and motility  quiz practice

The cell song


1.2.11 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.

1.2.12 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.


1.2.13 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

Theory of knowledge:

1.2.14 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?


1.2.15 Syllabus and cross-curricular links:


Topic 4.4 Wave behaviour

Topic C.1 Introduction to imaging

Topic C.3 Fibreoptics


1.2.16 Aim 8: Developments in science, such as electron microscopy, can have

economic benefits as they give commercial companies opportunities to

make profits, but this can affect cooperation between scientists.


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