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Cells The Basic Units of Life

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Page 1: Cells The Basic Units of Life. Cell Theory Robert Hooke was the first person to describe cells in 1665. He observed cork cells and plant cells, which

CellsThe Basic Units of Life

Page 2: Cells The Basic Units of Life. Cell Theory Robert Hooke was the first person to describe cells in 1665. He observed cork cells and plant cells, which

Cell Theory

Robert Hooke was the first person to describe cells in 1665.

He observed cork cells and plant cells, which are easier to see because of a cell wall.

Animal cells are harder to see, so he thought animals weren’t made up of cells since he couldn’t see them.

Page 3: Cells The Basic Units of Life. Cell Theory Robert Hooke was the first person to describe cells in 1665. He observed cork cells and plant cells, which

Anton van Leeuwenhoek

Discovered animalcules (which means little animals)

Now known as Protists (single-celled organisms)

Discovered cells in animal blood. Found differences between blood cells of

different animals. First person to see bacteria

Page 4: Cells The Basic Units of Life. Cell Theory Robert Hooke was the first person to describe cells in 1665. He observed cork cells and plant cells, which

Cell TheoryMatthias Schleiden and Theodor Schwann

Schleiden studied plants – Discovered all plants are made of cells

Schwann studied animals – discovered that all animal tissue is made of cells.

Schwann wrote first 2 parts of cell theory

All organisms are made of one or more cells

The cell is the basic unit of all living things

Page 5: Cells The Basic Units of Life. Cell Theory Robert Hooke was the first person to describe cells in 1665. He observed cork cells and plant cells, which

Cell Theory

Rudolf Virchow added the 3rd part to the cell theory in 1858

All cells come from existing cells

Page 6: Cells The Basic Units of Life. Cell Theory Robert Hooke was the first person to describe cells in 1665. He observed cork cells and plant cells, which

Common cell parts There are many different types of cells – But all cells have a few parts in common

Cell membrane and cytoplasm Organelles Genetic material

Page 7: Cells The Basic Units of Life. Cell Theory Robert Hooke was the first person to describe cells in 1665. He observed cork cells and plant cells, which

Cell Membrane & Cytoplasm

All cells are surrounded by a cell membrane

The cell membrane is a protective layer that covers the cell’s surface and acts as a barrier

It also controls materials going into and out of the cell

Cytoplasm is the fluid inside a cell

Page 8: Cells The Basic Units of Life. Cell Theory Robert Hooke was the first person to describe cells in 1665. He observed cork cells and plant cells, which

Organelles Structures that perform specific

functions within the cell. Most are surrounded by membranes Some float in the cytoplasm Some are attached to membranes or

other organelles

Page 9: Cells The Basic Units of Life. Cell Theory Robert Hooke was the first person to describe cells in 1665. He observed cork cells and plant cells, which
Page 10: Cells The Basic Units of Life. Cell Theory Robert Hooke was the first person to describe cells in 1665. He observed cork cells and plant cells, which

Genetic Material All cells contain DNA DNA is the genetic material that carries

information needed to make new cells and new organisms

DNA is passed from parent to offspring and controls the activities of a cell

Page 11: Cells The Basic Units of Life. Cell Theory Robert Hooke was the first person to describe cells in 1665. He observed cork cells and plant cells, which

2 Types of Cells Prokaryotes and eukaryotes Prokaryotes are single-celled organisms

that do not have a nucleus or membrane-bound organelles

Eukaryotes are an organism made of cells that have a nucleus enclosed by a membrane

Page 12: Cells The Basic Units of Life. Cell Theory Robert Hooke was the first person to describe cells in 1665. He observed cork cells and plant cells, which

Prokaryotes Single-celled organism Do not have a nucleus Ex: Bacteria and Archaea Bacteria are the most common

prokaryote No Nucleus, no membrane-covered

organelles Do have ribosomes, and a strong cell

wall

Page 13: Cells The Basic Units of Life. Cell Theory Robert Hooke was the first person to describe cells in 1665. He observed cork cells and plant cells, which

Eukaryotes Largest cells – 10 times larger than

bacterial cells Contain a nucleus and membrane-bound

organelles All living things that are not bacteria or

archaea are made up of one or more eukaryotic cells

Many eukaryotic organisms are multi-cellular (many cells)(plants, animals, fungi)


Chapter 4 A Tour of the Cell. History of Cells u Robert Hooke - Observed cells in cork. u Coined the term "cells” in 1665

Chapter 3 Section 1 Pg. 50. Robert Hooke English scientist Discovered cells in 1665

Cells And Cellular Transport. Where does the name “cell” come from? “Cells” were named by Englishman Robert Hooke in 1665. He observed that cork wood

Discovery of cells Cells 1st discovered in 1665 by Robert Hooke Viewed dead cork cells with simple light microscope

Chapter 7 Cells and Transport. Hooke 1665 Observed pieces of cork under a simple microscope. Describe the structure of cork

Cells. The Discovery of Cells Robert Hooke, and English scientist, discovered and named cells in 1665. He looked at thin slices of cork through a light

Cellular Organelles Cellular Transport. History 1665 – Robert Hooke – observation of cork cells 1833 – Robert Brown – nucleus discovery

Cell Theory - ahschools.us€¦ · Cell Theory Cells were discovered in 1665 by Robert Hooke. Early studies of cells were conducted by - Mathias Schleiden (1838) - Theodor Schwann

CELLS History, Parts, Functions. Robert Hooke 1665

Introduccion a Micrografía de R. Hooke (1665)

Cytology - the study of cells Mr. Femia Biology. Important scientists – Robert Hooke 1665 - Named cells after the small boxy rooms that monks live in

Ch 6: Cells. History of Cytology 1665 – Robert Hooke Viewed cork Named “cells” 1673 – Anton van Leeuwenhoek Unicellular pond organisms – named “animalcules”

Cell Biology & Cell Organelles. Get Hooke-d on Cells! ScientistDiscovery Robert Hook (1665) Described the empty spaces between cork as “cells” Actually

The Cell The basic unit of life. Cell History Cytology- study of cells 1665 English Scientist Robert Hooke Used a microscope to examine cork (plant) Hooke

Ch. 7 Notes. Robert Hooke (1665). Observed “cork.” Said “cork was made of little compartments that looked like monk’s “cells.” History of Cells

CELLS – THEORY Unit One Notes. THE FIRST OBSERVED CELLS Robert Hooke (1665) – a British scientist who used a homemade microscope Hooke looked at a

By Lana Brown Robert Hooke. Robert Hooke discovered cells and named them. Robert Hooke discovered cells in 1665 He was the first to discover cells by

Cells. Robert Hooke -1665 In his book, entitled Micrographia, Hooke was the first to use the term cell From the Latin “cella” meaning “small chamber”

INTRODUCTION TO CELLS. Robert Hooke naturalist, philosopher, inventor, architect.... (July 18, 1635 - March 3, 1703) In 1665 Robert Hooke publishes his

Chapter 4 Cell Structure. I. Cell Theory (4.1) Hooke first observed cells 1665 Leeuwenhoek first observed live cells. 1838-9 Schleiden and Schwann

Cells. Cell Discovery 1665 Robert Hooke: Around the time of Newton –discovered the cell –Saw dead cells of a cork plant –Called them cells because they

Cells The smallest unit of life. Discovering the Cell 1665 - Robert Hooke

The Discovery of Cells In 1665 Robert Hooke looked at cork under the microscope and described what he saw as “tiny rooms” or “cells”

Chp. 7- Cell Theory & Parts. The Discovery of Cells Robert Hooke (1665) –Looked at cork under a microscope. –Saw many little boxes. –Called them cells

Cells. Discovery of Cells 1665: Robert Hooke looking at cork under crude microscope

Introduction to Cells Biology A/Cells. The Discovery Cells were first discovered in 1665 when Robert Hooke observed a slice of cork under a microscope.Cells

Chapter 3 Cells I. Cells A. History 1. Robert Hooke a. English physicist b. Examined cork slices, used the term "cell" (1665) to describe compartments

The Plant Cell. EARLY STUDIES OF CELLS n English scientist Robert Hooke was the first person to describe cells in 1665. n Hooke examined the microscopic

Cell Structure. I. Looking at Cells A. Scientists only became aware of cells after the invention of the microscope. 1. 1665:Robert Hooke observed

Cell Structure Chapter 4. 2 Cell Theory Cells were discovered in 1665 by Robert Hooke. Early studies of cells were conducted by - Mathias Schleiden (1838)

Chapter 3: Cells 1. In 1665, An English Scientist Robert Hooke used a 3 lens microscope to examine thin slices of cork. Hooke noticed the cork was made

Cells Tissues Organ systems Organs Organisms 1665 – Robert Hooke observes cork is made of little compartments he calls “cells” 1674 – Leeuwenhoek

Cells Biology. Discovery of Cells Robert Hooke-1665 ▫Biologist, inventor, architect physicist, astronomer ▫30x, cork…cells Anton van Leeuwenhoek ▫300x,

Introduction to Cells and the Microscope. Brief history of cells… 1665 Hooke sees “cells” in cork 1674 Van Leeuwenhoek observes living cells in water

Lesson 4: Cell Composition February 4, 2015. 2 Cells Cells were discovered in 1665 by Robert Hooke Early studies of cells were conducted by – Mathias