Life Is Cellular All living things are made of cells.

Slides:



Advertisements
Similar presentations
Life Is Cellular The Cell Theory Early 1600’s – Two useful instruments were constructed Telescope Microscope.
Advertisements

Cell Theory and Prokaryote vs. Eukaryote
CELL THEORY NOTES.
Cell Theory. Cell theory states: 1.All living organisms are composed of cells. They may be unicellular or multicellular. Unicellular = single cell organisms.
History of Cell Discovery Chapter 4. Microscope view of cells ► Robert Hooke – first to see cells!  designed microscope that he was able to view cork.
Robert Hooke - uses the word “cells” to describe cork. Anton van Leeuwenhoek - observes tiny microorganisms with his microscope.
Cell Theory.
The Characteristics of Cells and Cell Theory
THE CELL HANDOUTS Chapter 7 Section 7-1.
4-1 THE HISTORY OF CELL BIOLOGY. THE DISCOVERY OF CELLS  Cell – the smallest unit of life that can carryout all of the processes of life.
History of the Cell. How are these cells the same and how are they different?
Introduction To Cells * All living things are made up of cells that have similar basic structures.
Cell Structure and Function
Chapter 3 Cells 3.1 Cell Theory.
Ch. 7 cell structure and function Life is cellular
The Cell Theory. Important Scientists Many important scientists aided in the discovery of the cell and the formulation of the cell theory Many important.
Lesson Overview 7.1 Life is Cellular.
 A cell is the basic unit of life.  The development and enhancement of microscopes made the observation and description of microscopic organisms and.
The Cell Theory Microscopes Provide the Windows to the World of the Cell.
Cell Structure and Function
CONTRIBUTIONS TO THE CELL THEORY
Cell theory lab: Group leaders must choose who reads each slide!!!
Scientists, Cell Theory and Prokaryote vs. Eukaryote.
Cell Theory.
Chapter 3: Cell Structure and Function
CHAPTER 7.  The CELL is the basic unit of structure and function in living things.  CELL THEORY states ◦ 1. All living things are composed of cells.
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 Timeline. What is a cell? The basic unit of structure and function of life.
7-1: Life is Cellular Biology 1. If you look closely at different things, you will notice that every living organism is made of cells Introduction.
It all started with an invention….  The first microscope  Zacharias Jansen, 1595, Middleburg, Holland  It launched great leaps in Astronomy and Biology.
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.
The History of Cell Theory How did scientist figure out that all living things are made of cells?
The Cell Theory. The Cell The basic unit of structure and function of living things. – There are two main types of cells. – There are two main types of.
CHAPTER 7 History of the Cell: At least to Our Knowledge.
Chapter 7 Biology Cell structure and function. Discovery of cells In mid-1600’s microscopes were being used to observe living things 1665 Robert Hooke.
Chapter 4.1 Introduction to the cell. Robert Hooke 1665 used a microscope to examine a piece of cork. (dead cells) He described it as consisting of “a.
The Cell Theory SOL BIO 2a. The Cell Theory  The development and refinement of magnifying lenses and light microscopes made the observation and description.
The Cell. History and Early Contributions Robert Hooke (1665) – first to see cells  Used an early microscope to look at a slice of cork and saw tiny.
Microscopes enabled scientists to view and study cells, the basic units of life Light Microscopes Anton van Leeuwenhoek first used a microscope in the.
The Cell Theory – a timeline Late 1500’s: -first lenses used in Europe -used to determine cloth quality (weave and precision) -combos of lenses gave better.
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)
Cell Theory and the Scientists Who Helped Shape It
Chapter 7: Cell Structure and Function (Section 1)
The Cell: History and Theory Biology Ms. Lew
The Cell: History and Theory Biology Ms. Lew
Cell Theory and the Scientists Who Helped Shape It
Cell Theory! Biology Ms. Lew
The Cell Theory A Timeline
Structure and Function of Cells:
Ch. 7: The Structure & Function of Cells
History of Cells.
Cell Theory and the Scientists Who Helped Shape It
Cells.
Cell Structure and Function
Cells The basic unit of a living organism.
History of the Cell Theory
Cell Biology.
Cell theory, prokaryotes, eukaryotes, scientists
Cell Theory.
Objectives Describe cell theory:
Cell theory.
Cell Theory.
History of the Cell Theory
Cell Discovery and Theory
Cell Theory and the Scientists Who Helped Shape It
Cell Structure and Function Chapter 7
7-1 Life is Cellular.
The Cell Theory – a timeline
NOTE SHEET 3 – The Cell Theory
Cells and Cell Theory.
Presentation transcript:

Life Is Cellular All living things are made of cells.

Microscopes enable the human eye to observe cells, the smallest units of life.

There are many important scientists who have made discoveries that have helped to uncover the mystery of cells. Let’s take a look…

Robert Hooke was the originator of the word “cell” in biology. He used the microscope pictured here to observe thin slices of cork. His observations of these plant cells reminded him of monks' cells which were called "cellula." Robert Hooke (18 July March 1703) – natural philosopher, inventor, architect....

Leeuwenhoek's skill at grinding lenses enabled him to build microscopes that magnified over 200 times. He was the first to observe life in a drop of pond water. In a letter Leeuwenhoek described observations of lake water, including an excellent description of the green algae Spirogyra : "Passing just lately over this lake,... and examining this water next day, I found floating therein…some green streaks, spirally wound serpent-wise…The whole circumference of each of these streaks was about the thickness of a hair of one's head... all consisted of very small green globules joined together: and there were very many small green globules as well." Antony van Leeuwenhoek ( )

Matthias Jakob Schleiden April 5, June 23, 1881 In 1838 Schleiden discovered that ALL plants are composed of cells; together with his friend Theodor Schwann he formulated the cell theory of life.

Theodor Schwann December 7, 1810 – January 11, 1882 In Schwann discovered that ALL animals are also composed of cells. He worked with Matthias Schleiden to formulate the cell theory.

Rudolf Virchow October 13, September 5, 1902 Virchow's many discoveries include cells in bone and connective tissue. In 1855 he published his idea that "every cell stems from another cell.” He also stated that all diseases involve changes in normal cells.

These discoveries lead to what we call The Cell Theory. The Cell Theory states that: 1.All living things are composed of cells. 2.Cells are the basic units of structure and function in living things. 3.New cells are produced from preexisting cells.

Two Types of Cells ProkaryotesEukaryotes Do NOT have a nucleusDO have a nucleus Smaller and simpler cellsMore complex cells with dozens of specialized organelles All bacteria are prokaryotic cellsAll plant, animal and fungi are made of eukaryotic cells. Carry out all activities of life even though they are simple organisms. They do not contain all the membrane bound organelles. Each organelle plays a role in carrying out life processes and maintaining homeostasis.

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

© 2025 SlidePlayer.com. Inc. All rights reserved.