Chapter 2.3 Discovering Cells.

Slides:



Advertisements
Similar presentations
Microscopes Section 3-1.
Advertisements

Microscopes Section 2.2. History and use of the microscope
Chapter 7 Section 1 Cells.
Chapter 7 CELL STRUCTURE AND FUNCTION M. C. Alejandro Cruz.
Microscopes.
Cells All living things are made of cells.
Cells and Heredity Chapter 1 Lesson 1
Cells Structure and Function Input from Ms. Thomas (IB teacher) and Heinemann Book.
Discovering Cells WITH MICROSCOPES. What are Cells?
Cell Theory Chapter 7. Cell - smallest unit that can carry on all the processes of life 2 types of organisms: 1. Unicellular organism - living thing that.
Cell Structure and Function
Discovering Cells Lesson 1 – TB pages What are cells? Cells are the basic units of structure and function in living things. All living things.
Cell Structure & Function
Discovery of the Cell Robert Hooke (1665) – English scientist who looked at thin slices of cork (dead oak tree bark) under a light microscope and noticed.
Microscopes History, Parts, and Usage. History of Microscopes Microscopes were invented in late 1500s –Compound microscope (2 or more lenses) –Used natural.
Cell Discovery and Theory History of the Cell Theory  In 1665, Robert Hooke invented the first simple microscope.  He looked at a cork.
The Cell Theory SOL BIO 2a. The Cell Theory The development and refinement of magnifying lenses and light microscopes made the observation and description.
Road to Discovery Microscope Timeline. Anton van Leeuwenhoek ( ) Dutch Scientist –Psst – this means he’s from Holland Hobby of grinding very small.
The Cell Theory 1.All living things are composed of cells. 2.Cells are the basic units of structure and function in living things. 3.All cells are produced.
Cell Lecture #1 What Are Cells? History of Cells.
Magnifying Cells To see most cells, you need to use a microscope. A microscope has one or more lenses that enlarge the image of an object as though you.
Cell Theory.
“Cell Theory”. Leeuwenhoek made a simple microscope (mid 1600’s) magnified 270X Early microscope lenses made images larger but the image was not clear.
Meet the Scientists Developing the Cell Theory
USE CHAPTER 7 IN THE TEXT BOOK!!
Chapter 7-1 Life is Cellular. Early Microscopes Robert Hooke looked at a thin slice of cork, from the cork oak tree Coined the term “cells”; looked.
Cell Theory STRUCTURE AND FUNCTION OF CELLS:. Discovery of Cells Cells were discovered with the invention of the MICROSCOPE in the early 17 th century.
Cells Cells are the basic units of structure and function in living things. Most cells are too small to be seen with the naked eye. The invention of the.
Microscopes. History Invented in the late 1500s – Compound microscope (2+ lenses) – Used natural light, magnified 20-30x.
The Cell Theory Discovery of cells. The Cell Theory The development and refinement of magnifying lenses and light microscopes made the observation and.
Microscopes History, Parts, and Usage. History of the Microscope Anton van Leeuwenhoek (mid 1600s) –“father of microscopy” –looked at water through a.
Section 7-1 The History of the Cell Theory and Microscopes.
Cells & Heredity: Section 1.1 – Discovering Cells 6 th Science.
Cells & Heredity: Section 1.1 – Discovering Cells 6 th Science.
Microscopes enabled scientists to view and study cells, the basic units of life Light Microscopes Anton van Leeuwenhoek first used a microscope in the.
Welcome to the Cell Chapter 2-3. Microscopes Microscopes --- allowed scientists to view cells. Cells --- The basic unit of life Compound light microscopes.
Chapter 2.3 Discovering Cells POINT > Identify how cells were discovered POINT > Describe how different microscopes work POINT > Describe the development.
Pamela Nell Copyright 2004 CELLS: The Units of Life Mrs. Nell 7 th Grade Life Science.
Cell History. History of the Cell O Robert Hooke: Discovered cells O 1665 –Made a simple microscope and looked at a piece of cork (dead cells of oak bark)
Microscopes Section 3-1. History of the Microscope 1590 –first compound microscope.
October 16, 2015 Page 59 Objective: I can identify the parts of a compound light microscope. Title Microscopes.
Introduction to the Cell
Cells Module B Lesson 1.
Chapter 7: Cell Structure and Function (Section 1)
Ch. 2-3: Discovering Cells
History, Parts, and Usage
Microscopes & Cell Theory
Cell Theory and Microscopes
Chapter 7 Section 1 Cells.
What Are Cells? History of Cells
POP Quiz What did Robert Hooke contribute to science?
Do Now How did the invention of the microscope help scientists make advances in Biology?
Structure and Function of Cells:
Discovery of the Cell.
History of Cells.
First to View Cells In 1665, Robert Hooke used a microscope to examine a thin slice of cork (dead plant cells) What he saw looked like small boxes What.
Cells.
Level-1 K-W-L: Microscope
History of Cells & the Cell Theory
Cells The basic unit of a living organism.
History of the Cell Theory
The Cell Theory.
Cells!.
Discovering Cells CH 1, Section 1 Page 6 – 13.
What is the basic unit of all Organisms??
Cell Theory.
History of the Cell Theory
Microscope History and Development
CELLS Page # 35.
Chapter 2.2 What are cells?.
Presentation transcript:

Chapter 2.3 Discovering Cells

POINT > Identify how cells were discovered POINT > Describe how different microscopes work POINT > Describe the development of Cell Theory

POINT > Identify how cells were discovered The invention of the lens Robert Hooke (1665): observed a thin slice of cork (dead plant cells) with a microscope He described what he observed as “little boxes” (cells)

POINT > Identify how cells were discovered Anton van Leeuwenhoek (1675): was the first person to observe living cells He was looking at pond water and saw “miniature animals” swimming around

CHECK: Who was the first person to see cells? What was Robert Hooke looking at with his microscope? What was van Leeuwenhoek looking at when he first saw living cells?

POINT > Describe how different microscopes work Magnification refers to the microscope’s power to increase an object’s apparent size

POINT > Describe how different microscopes work Resolution refers to the microscope’s power to show detail clearly

POINT > Describe different microscopes The compound microscope uses two lenses to magnify objects

CHECK: What is magnification? What is resolution? How many lenses in a compound microscope?

POINT > Describe different microscopes Elodea (aquatic plant) with a light microscope 40X 400X

Transmission Electron Microscope (TEM)

Transmission Electron Microscope (TEM) gives better resolution Herpes Virus Plant Root Cell

Scanning Electron Microscope (SEM)

Scanning Electron Microscope (SEM) shows even better topography Mosquito Head 200X 2000X

Scanning Electron Microscope (SEM) Fly Eye

Scanning Electron Microscope (SEM) Inside of Stomach Surface of Tongue Neuron

Scanning Electron Microscope (SEM) Pollen Yeast Red Blood Cell, Platelet, and White Blood Cell

TEM vs. SEM Viruses leaving a cell

POINT > Describe the development of Cell Theory Who developed the Cell Theory? Matthias Schleiden (1838): concluded that all plants are composed of cells Theodor Schwann (1839): concluded that all animals are composed of cells Rudolph Virchow (1855): determined that cells come only from other cells

POINT > Describe the development of Cell Theory What is the Cell Theory? 1. All living things are composed of one or more cells 2. Cells are the basic units of life function 3. Cells come only from existing cells

Homework: Read pages 50-57 Finish Study Guide GRAS pages 31-33

Feedback: Privacy Policy Feedback
Do Not Sell My Personal Information
About project: SlidePlayer Terms of Service

© 2024 SlidePlayer.com Inc. All rights reserved.