CHAPTER 7 CELL STRUCTURE & FUNCTION PGS. 168 - 199 CELL STRUCTURE & FUNCTION.

Slides:

Advertisements

Similar presentations

Microscopes. Simple Light Microscopes Contains one lens Uses light Used by Anton van Leeuwenhoek in the 1600s.

Advertisements

1 Review What is a cell Explain What three statements make up the cell theory Infer How did the invention of the microscope help the development of the.

Microscopes Section 3-1.

Microscopes Section 2.2. History and use of the microscope

Microscopes are used to increase the magnification and resolving power of the unaided eye MICROSCOPES.

Electron Microscopy.

Chapter 7: Cell Structure and Function

Microscopes and Cell Theory

Microscope History and Development (2) Field of view and Magnification Check and go over yesterday’s HW p

Living Organisms Consist of Cells State the resolution and magnification that can be achieved by a light microscope Explain the difference between magnification.

MICROSCOPES F STEREO F COMPOUND LIGHT F TRANSMISSION ELECTRON (TEM) F SCANNING ELECTRON (SEM)

Microscope History and Development

Microscopy and Measurement

Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 1 Chapter 2 – Measurement and Microscopy.

Tools of Science The Microscope.  An instrument that can form an enlarged image of an object.  Visible light is passed through the specimen and through.

Biology 3.1 Looking at Cells.

A Guide to Microscopy. The Light Microscope Purpose: History Flea glasses Anton van Leeuwenhoek Robert Hooke.

TAKE ONE OF EACH! TAKE ONE OF EACH! Microscopes.

Cell Structure & Function

Chapter 3 Section 1 Microscopes. Units of Measure  Metric system of measurement  International System of Measurement SI  Base Unit is the Meter (m)

Parts of a Microscope Microscope Basics. Label the Compound Light Microscope (Handout) Ocular lens Body Tube Coarse Adjustment Knob Fine adjustment Knob.

MICROSCOPES As tools for the biologist. How are microscopes useful? They are used to extend human vision by making enlarged images of objects. They are.

Chapter 3: Cell StructureSection 1: Looking at Cells 1 Cell Structure Chapter 3.

MICROSCOPES Copyright Cmassengale 1. Microscopy and Measurement produce an enlarged image of an object  Microscopes – produce an enlarged image of an.

MICROSCOPES Some Important Vocabulary MAGNIFICATION- increase of an object’s apparent size RESOLUTION- the power to show details clearly * Microscopes.

Microscopes The invention of the microscope in the 17 th century led to the discovery of the cell. Robert Hooke described cells using this light microscope.

AS Biology Core Principles The Electron Microscope Powerpoint hosted on Please visit for 100’s more free.

Cell Discovery and Theory History of the Cell Theory  In 1665, Robert Hooke invented the first simple microscope.  He looked at a cork.

Cell Structure and Function Cellular Basis of Life, Homeostasis Chapter 7-1.

Light Microscopes Light Microscopes Compound Light Microscope Focuses with light and lenses. Can be used with living specimens Light weight and portable.

Section 3-1 Looking at Cells.

Life is Cellular 7.1 P. Smith Bio CP.

“Cell Theory”. Leeuwenhoek made a simple microscope (mid 1600’s) magnified 270X Early microscope lenses made images larger but the image was not clear.

Microscopes and Cell Theory. EARLY MICROSCOPES Zacharias Janssen - made 1st compound microscope a Dutch maker of reading glasses (late 1500’s)

Microscopes. A microscope is… an instrument that produce images or pictures of small objects.

The wacky history of the cell theory. Microscopy Janssen’s microscope (1590’s) capable of magnifying images approximately three times when fully closed.

Cell Theory and the Microscope SBI3C0 Ms. Manning.

Tools of a Biologist MICROSCOPY Two factors play an important role in microscopy: 1. Magnification compares real size of a specimen with the one viewed.

Microscopes Microscopes. Importance One of the most widely used tools in Biology One of the most widely used tools in Biology Produces enlarged images.

Slide 1 of 31 Copyright Pearson Prentice Hall Biology.

Chapter 1 continued …… Microscopes (It would be difficult to study our cells and bacteria cells if we could not see them!!!)

The Microscope An optical instrument used for viewing very small objects invisible to the naked eye, typically magnified several hundred times.

Microscopes History, Parts, and Usage. History of the Microscope Anton van Leeuwenhoek (mid 1600s) –“father of microscopy” –looked at water through a.

Introduction to the Microscope  Types of Microscopes  Care  Parts  Focusing.

1 Parts of the Microscope Ocular (eyepiece) Interpupillary adjustment Body Arm Coarse adjustment knob Fine focus adjustment knob Stage adjustment knobs.

Types of Electron Microscopes Electron microscopes use a beam of electrons rather than visible light to illuminate the sample. They focus the electron.

Chapter 2.3 Discovering Cells POINT > Identify how cells were discovered POINT > Describe how different microscopes work POINT > Describe the development.

Microscopy Microscopes are tools that extend human vision by enlarging images of objects. Biologists use microscopes to study cells, cell parts, diseases.

The Electron Microscope

CHAPTER 7 Cell Structure and Function Page 188 and 189.

Microscopes Section 3-1. History of the Microscope 1590 –first compound microscope.

1.4 Tools & Techniques Microscopes– tools that extend human vision by making enlarged images of objects Magnification – power to increase the size of an.

History, Parts, and Usage

Biology Chapter 2 Section 2

Monday, 12 November 2018Monday, 12 November 2018

Do Now How did the invention of the microscope help scientists make advances in Biology?

Chapter 7.1 Life is Cellular.

Microscopes Lesson 3 September 24th, 2010.

Chapter 7 – Cell Structure and Function

Copyright Pearson Prentice Hall

CHAPTER 7 CELL STRUCTURE & FUNCTION

The Microscope.

Exploring Life 1.3.

History of the Cell The Cell Theory 1600s ’s

The cell theory states:

Microscope History and Development

Presentation transcript:

CHAPTER 7 CELL STRUCTURE & FUNCTION PGS CELL STRUCTURE & FUNCTION

ANTON VAN LEEUWNENHOEK One of the first person’s to use a microscope. Looked at pond water and saw small organisms.

ROBERT HOOKE Looked at plant tissues in He specifically looked at cork. Looked like tiny chambers he called “cells”

4 Microscopy Today: Compound Light Microscope Light passed through specimen Focused by glass lenses Image formed on human retina Max magnification about 1000X Resolves objects separated by 0.2  m, 500X better than human eye

5 Compound Light Microscope eye amoeba, light micrograph light rays ocular lens objective lens specimen condenser lens light source a. Compound light microscope 85 µ m © Robert Brons/Biological Photo Service Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

6 Microscopy Today: Transmission Electron Microscope Abbreviated T.E.M. Electrons passed through specimen Focused by magnetic lenses Image formed on fluorescent screen Similar to TV screen Image is then photographed Max magnification 1000,000sX Resolves objects separated by  m, 100,000X better than human eye

7 Transmission Electron Microscope electron source electron beam b. Transmission electron microscope specimen 200 nm pseudopod segment, transmission electron micrograph observation screen or photographic plate electromagnetic objective lens electromagnetic condenser lens electromagnetic projector lens © M. Schliwa/Visuals Unlimited Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

8 Microscopy Today: Scanning Electron Microscope Abbreviated S.E.M. Specimen sprayed with thin coat of metal Electron beam scanned across surface of specimen Metal emits secondary electrons Emitted electrons focused by magnetic lenses Image formed on fluorescent screen Similar to TV screen Image is then photographed

9 Scanning Electron Microscope amoeba, scanning electron micrograph electron gun electron beam electromagnetic condenser lenses scanning coil final condenser lens secondary electrons specimen electron detector c. Scanning electron microscope 500m TV viewing screen © Kessel/Shih/Peter Arnold, Inc. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. µ

10 Microscopy and Amoeba proteus eye amoeba, light micrographamoeba, scanning electron micrograph light rays ocular lens objective lens specimen condenser lens light source a. Compound light microscope electron gun electron beam scanning coil specimen c. Scanning electron microscope electron source electron beam b.Transmission electron microscope specimen 85 µ m 200 nm 500 µ m pseudopod segment, transmission electron micrograph electromagnetic condenserl enses final Condenser lens secondary electrons observation screen or photographic plate electromagnetic objective lens electromagnetic condenser lens electromagnetic projector lens electron detector TV Viewing screen a: © Robert Brons/Biological Photo Service; b: © M. Schliwa/Visuals Unlimited; c: © Kessel/Shih/Peter Arnold, Inc. Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.