The Cell: Discovery of the Cell The first person to see cells was Robert Hooke in 1665. He was looking at a thin slice of cork through a microscope and.

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.

Discovery of Cells. People  Robert Hooke invented the microscope;  1665-he looked at a piece of cork and noticed it was made up of little boxes.

Classifying Prokaryotes and Eukaryotes

The Cell: Discovery of the Cell The first person to see cells was Robert Hooke in He was looking at a thin slice of cork through a microscope and.

Cell Theory and Prokaryote vs. Eukaryote. What is a Cell?  Cell – Basic unit of living things. Organisms are either:  Unicellular – made of one cell.

What people used to think:

7-1 Cell Theory Prokaryotes vs. Eukaryotes

4-1 Introduction to the Cell

Robert Hooke - uses the word “cells” to describe cork. Anton van Leeuwenhoek - observes tiny microorganisms with his microscope.

INTRODUCTION TO CELLS Life is cellular.

Prokaryotic vs Eukaryotic Cells Honors Biology. 2 LEVELS OF ORGANIZATION Nonliving Levels: 1.ATOM (element) 2.MOLECULE (compounds like carbohydrates &

Cells The Basic Units of Life. Cell Theory  Robert Hooke was the first person to describe cells in  He observed cork cells and plant cells, which.

The Characteristics of Cells and Cell Theory

Properties of Prokaryotic Cell

The Discovery of the Cell Advancements in technology have allowed scientists to study cells since the 1600s. Pioneer scientists in the study of cells:

Chapter 3 Cells 3.1 Cell Theory.

The Cell Theory. Important Scientists Many important scientists aided in the discovery of the cell and the formulation of the cell theory Many important.

Warm-up What is the difference between eukaryotic and prokaryotic cells? Which type of cells do humans have? So which type of cell is more complex?

Objectives -Define each of the following: Prokaryotes, eukaryotes,cell -Draw and label and -Draw and label Prokaryotes and eukaryotes -Mention the function.

AIM: How do we describe cells?

Chapter 7.1 Microscope & Cell. Microscope A microscope is an instrument used to make small objects look larger.

Cells: Basic Structures & Functions

CONTRIBUTIONS TO THE CELL THEORY

Bellringer 10/07 What do you think this cartoon is about? What do you think is happening?

atch?v=wJyUtbn0O5Y.  The average human being is composed of around 100 trillion individual cells!  On an average day,

Chapter 3: Cell Structure and Function What Are Cells? Cells- A Look Inside.

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.

HUMAN CELLS Szemán Zsuzsa. CELLS  Smallest living unit  Most are microscopic.

BASIC STRUCTURE OF A CELL MS. GAYNOR AP BIOLOGY/ CHAPTER 6 (PART 1)

1 Basic Structure of a Cell. 2 A. Main Characteristics of Organisms 1.Made of CELLS 2.Require ENERGY (food) 3.REPRODUCE (species) 4.Maintain HOMEOSTASIS.

Cells – the smallest structure that carries out life activities.

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.

Cell Theory and Prokaryote vs. Eukaryote. What is a Cell?  Cell – Basic unit of living things. Organisms are either:  Unicellular – made of one cell.

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 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.

Learning Goals 1. Describe the 3 parts of the Cell Theory and discuss the history behind it. 2. Compare and Contrast a Prokaryotic & Eukaryotic Cell 3.

Life is Cellular First to View Cells In 1665, Robert Hooke used a microscope to examine a thin slice of cork (dead plant cells)

Chapter 6 in the Textbook

Cells. uEo2ccTPA uEo2ccTPA uEo2ccTPA

Lecture 3: The Cell The Cell Theory

The Cell Copyright © 2002 Pearson Education, Inc., publishing as Benjamin Cummings.

Lecture 3: The Cell The Cell Theory The cell theory states that:

The Cell: Discovery of the Cell

BASIC STRUCTURE OF A CELL MS. GAYNOR AP BIOLOGY/ CHAPTER 6 (PART 1)

The Cell Theory A Timeline

Lecture 3: The Cell The Cell Theory The cell theory states that:

The Cell Theory A Timeline

History of Cells.

Lecture 3: The Cell The Cell Theory The cell theory states that:

Cell History & Structure

Cell Theory Section 7-1.

Lecture 3: The Cell The Cell Theory

The Cell The basic unit of life.

Cell theory, prokaryotes, eukaryotes, scientists

Cell Discovery and Theory

The Cell Theory A Timeline

General Animal Biology

The basic structure that makes up all living organisms

Seventh Grade Introduction to cells Thomas stinson

7-1 Life is Cellular.

Presentation transcript:

The Cell: Discovery of the Cell The first person to see cells was Robert Hooke in He was looking at a thin slice of cork through a microscope and he found what he described as "tiny rooms" that he called cells

The Cell Theory In 1838, the German botanist Matthias Schleiden concluded that all plants were composed of cells In 1839, Theodor Schwann concluded the same thing for animals In 1855, Rudolf Virchow noted that all cells come from other cells The cell theory states that: 1)all living organisms are made of one or more cells, 2)cells are the basic units of structure and function, and 3)cells come only from pre-existing cells. A cell is the smallest unit that can carry on all of the processes of life

3 ProkaryoticProkaryotic EukaryoticEukaryotic Types of cells of cells All other forms of life بدائية النواة حقيقية النواة Types of cells Bacteria and related micro-organisms البكتيريا وكائنات دقيقة شبية بها

Three Domains of Living Organisms

Domains of life A)- Prokaryota بدائيات النواة Contains 2 Kingdoms: 1.Archaea, مملكة البدائيات وتضم البكتيريا البدائيةالبكتيريا البدائية 2.Bacteria (Eubacteria), مملكة االبكتيريا الحقيقيةاالبكتيريا الحقيقية B)- Eukaryota حقيقيات النواة Contains 4 Kingdoms: 1.Fungi مملكة الفطريات 2.Protesta مملكة الطلائعيات 3.Plantae مملكة النباتات 4.Animalia مملكة الحيوانات

All cells are surrounded by a plasma membrane غشاء بلازمى. The semi-fluid substance المادة شبه السائلة within the cell is called “cytosol”, السيتوبلازم containing the cell organelles عِضيات الخلية. All cells contain chromosomes which have genes in the form of DNA. All cells have tiny organelles عضيات صغيرة called “Ribosomes” that make proteins. Prokaryotic and eukaryotic cells differ in size and complexity Similarities أوجه التشابه

Prokaryotic and eukaryotic cells differ in size and complexity Differences أوجه الإختلاف 1. Eukaryotes have a nucleus, while prokaryotes do not. 2. Eukaryotes have membrane-bound organelles, while prokaryotes do not. 3. Eukaryotic cells are, on average, ten times the size of prokaryotic cells. 4. The DNA of eukaryotes is much more complex and therefore much more extensive than the DNA of prokaryotes. 5. Prokaryotes have a cell wall composed of peptidoglycan,. Many types of eukaryotic cells also have cell walls, but none made of peptidoglycan. 6. The DNA of prokaryotes floats freely inside the cell; the DNA of eukaryotes is held within its nucleus and associated with histones (proteins) 7. Eukaryotes undergo mitosis and meiosis; prokaryotes divide by binary fission (simple cell division)

Nucleus Endoplasmic reticulum Golgi apparatus LysosomesVacuolesMitochondriaCytoskeleton Cell membrane Ribosomes Cell wall Comparison and Contrast ProkaryotesEukaryotes