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Cells Anne Tierney, University Teacher Room 938, Boyd Orr Building Available through the Centre for Bioscience
Intended learning outcomes Know 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 three –You have five minutes to think of everything you can that defines what a cell is –Feed back to the class
Types of cell - prokaryote Prokaryote –Simple –1-2μm –No nucleus –No organelles –Single chromosome
The most common shapes of prokaryotes a.Cocci – round b.Bacilli – rod-shaped c.Spiral
Types of cell - eukaryote Eukaryote –Complex –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 graticule The eyepiece scale is UNKNOWN The stage scale is KNOWN –100 stage divisions = 10mm Calibration must be done for every magnification
Calibrating the eyepiece graticule 100 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
Discovery of Cells. First to View Cells In 1665, Robert Hooke used a microscope to examine a thin slice of cork What he saw looked like small boxes so.
Looking at Cells. What is the Metric System? Metric System Examine the SI units in Table 1(page 50). How many meters are there in a kilometer? How many.
LN# 8 Cells. Cells Cells are the basic unit of living organisms. The cell theory describes the connection between living things and cells. The cell theory.
Cells Mini Assessment Review. DNA: Is the genetic material found in cells. DNA stands for deoxyribonucleic acid.
If all living things need water to survive… Why do you think the runner reacted so negatively when given water during her marathon?
All organisms (living things) can be classified into two categories: Unicellular (Single Celled) and Multi- cellular Unicellular organisms are made.
Cells. All living things are made up of cells Cells are the building blocks of life Organization Organ Systems Organs Tissues Cells Tissues are made of.
Microscopes, Cell Theory, and Cellular Organelles Jeopardy Test Review Game.
Basic Cell Structure. Cells Basic building blocks of life Understanding of cell morphology is critical to the study of biotechnology.
3.1 Cell Theory KEY CONCEPT Cells are the Basic unit of life.
Chapter 3 Notes, part 1 Looking at Cells Cells were discovered in the 17 th century, when microscopes were invented….
At least two things that all cells have in common? (use notes if necessary)?
1 Cell Structure and Function Part 2 Prokaryotes and Eukaryotes Characteristics of Living Things.
Here are three sets of 10. How many sets of 5 are there? Five times.
Biology Journal Ch 3. Name three types of microscopes. Compound light microscope Electron microscope Scanning tunneling microscope.
I. The history of the cell Anton Van Leeuwenhoek A. Anton Van Leeuwenhoek- One of the1 st people to use microscope to study cells.
CELLS AND HEREDITY. Introduction November 30, 2010 New Vocabulary List – back of spiral –Title of new list – Heredity –DNA -- a molecule found in cells.
Micrometry Linear measurement of cells. Units of measurement in cell study Millimeter (mm) – 1mm=0.001m Micrometer (μm) – 1μm=0.001mm= m Nanometer.
Biology I- CP Chapter 1- Scope of Biology Text- Biology, Exploring Life.
Discovering Cells…. Anton van Leenwenhoek Dutch scientist Dutch scientist The first person to look at water using a single-lens microscope in the mid-1600’s.
Lesson 43 Microbes Under View. Bacteria & Protist What are bacteria? Bacteria are tiny living beings (microorganisms) - they are neither plants nor animals.
Do Now: Use your notes and hw 1.What are the 3 shapes of bacteria? 2.What is the function of the capsule? 3.What is a nucleoid?
Welcome to Cell City Jeopardy! I’m your happenin’ host Sal the Scientist! Today we will be learning about the basic building block of all life - cells!
The Cell in Action Guided Notes. What you should already know… Cell membrane – a phospholipid layer that covers a cells surface; acts as a barrier between.
Organelles What I Need To Know. Prokaryotes are very simple, single celled organisms. These cells have no nucleus, and very few organelles. They've got.
Cells and Heredity Chapter 1 The Cell. Bell Work 8/16/10 Please get our your signed syllabus sheet Please get a peach bell work sheet and begin answering.
VOCABULARY A - NotMoral vs. AMORAL AUTO – one or by itselfAUTOMOBILE AUTOBIOGRAPHY BI - twoBICYCLE BILINGUAL BIO – life BIOLOGY HETERO – different or.
N-6 Cellular Respiration How do we get energy from food?
Prepare to ace this test!!!. Answer appears here Answer Hint appears here Hint Questions will appear here Click on the Hint tab if you need are not sure.
Hi Guys, Im Celli the Caterpillar and I am going to teach you about these tiny organisms that are found in our bodies as well as in plants. Do you know.
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