We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byDiana Martin
Modified over 4 years ago
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
Discovery of Cells.
Biology Journal Ch 3.
Microscopes, Cell Theory, and Cellular Organelles
LN# 8 Cells.
P. 194 A.Q. 1abc, 3ab, 4, 5.
Prokaryotic and Eukaryotic Cells. Two Types Of Cells 1. PROKARYOTE 2. EUKARYOTE.
Prokaryotes vs Eukaryotes
KEY CONCEPT Cells are the Basic unit of life.
3.1 Cell Theory KEY CONCEPT Cells are the Basic unit of life.
Prokaryotic Cells Vs. Eukaryotic Cells What’s the difference between prokaryotes and eukaryotes? Prokaryotic cells were here first and for billions.
2.1 Cell Structure & Microscopy 1 Follow-Me – iQuiz.
Cellular Structure and Function Review
The student is expected to:
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.
Think about it… Who is on top of the food chain?
The Basic Unit of Life. Cells may be simple or complex but they are the basic unit of life for all organisms Definition: the basic structural and.
Cell Types. Cell Theory Every living organism is made of one or more cells The smallest organisms are made of single cells while multicellular organisms.
Introduction to the Cell Cell Theory, Prokaryotes and Eukaryotes.
Calibration of Microscopes and Scale Drawings.
© 2018 SlidePlayer.com Inc. All rights reserved.