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Anne Tierney, University TeacherCells Anne Tierney, University Teacher Room 938, Boyd Orr Building Available through the Centre for Bioscience
Intended learning outcomesKnow what constitutes a cell Describe a typical cell Prokaryote Eukaryote Calibrate a light microscope Measure cells using a light microscope
What is a cell? Get into groups of two or threeYou have five minutes to think of everything you can that defines what a cell is Feed back to the class
Types of cell - prokaryoteSimple 1-2μm No nucleus No organelles Single chromosome
The most common shapes of prokaryotesCocci – round Bacilli – rod-shaped Spiral
Types of cell - eukaryoteComplex 5-100μm Membrane-bound nucleus Several types of organelle Several chromosomes Single-celled organisms Multi-cellular organisms
A eukaryotic cell - animal
A eukaryotic cell - plant
How do we measure cells? Cells are (usually) too small to see with the naked eye Visualised with a microscope How can we measure with a microscope? Done indirectly Comparing a known scale with a scale that can be calibrated
Measuring cells eyepiece graticule stage micrometer
How do we do it? We compare the known scale (stage micrometer) to the scale that is to be calibrated
Calibrating the eyepiece graticuleThe eyepiece scale is UNKNOWN The stage scale is KNOWN 100 stage divisions = 10mm Calibration must be done for every magnification
Calibrating the eyepiece graticule100 eyepiece divisions = ____ *stage divisions We know that 100 stage divisions = 10mm 1 stage division = ____mm ____ *stage divisions = ____mm 100 eyepiece divisions = ____mm 1 eyepiece division = ____ mm or ____μm Repeat this for each magnification
Prokaryotic vs. Eukaryotic Cells Eukaryotic Cells Prokaryotic Cells.
The Two Cell Types. There are two basic cell types: Prokaryotic cells are simple cells Prokaryotic cells Eukaryotic cells are more complex Eukaryotic.
Agenda 8/20/07 1. Go over “Inside the Cell” Handout 2. Types of Cells - Notes 3. Cell Types Worksheet (p 66-74) Warm-Up Question 8/20/07 1.Name 3 parts.
Introduction to the Cell Cell Theory, Prokaryotes and Eukaryotes.
Field of View 4X. Field of View 10X Field of View 40X.
The Cell Theory The cell is the unit of structure in all living things. The cell is the unit of function in all living things. All cells come from preexisting.
LN# 8 Cells.
Life is Cellular First to View Cells In 1665, Robert Hooke used a microscope to examine a thin slice of cork (dead plant cells)
P. 194 A.Q. 1abc, 3ab, 4, 5.
First, what is a cell? It took a long time for people to discover cells and figure out what they were all about. They needed sophisticated equipment.
Prokaryotic and Eukaryotic Cells. Two Types Of Cells 1. PROKARYOTE 2. EUKARYOTE.
Cell Types Mrs. Harlin Compare prokaryotic and eukaryotic cells in terms of their general structures (plasma membrane and genetic material) and.
Calculating Cell Size.
Calculating Cell Size. Syllabus Explain the difference between magnification and resolution Calculate the linear magnification of an image.
Chapter 7 Section 1 Cells.
Cell Discovery and Theory. The Cell Theory All living organisms are made up of one or more cells. Cells are the basic unit of structure and function in.
Topic Question: Are bacteria, plant and animal cells prokaryotic or eukaryotic?
Cell Theory. 1. All living things are made of cells.
Essential Standard: 1.1 Understanding the relationship between structure and function of cells and their organelles Clarifying Objective: Summarize.
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