all life is made of cells discovered after microscope invented 1665: robert hooke first observed...

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Page 1: All life is made of cells Discovered after microscope invented 1665: Robert Hooke first observed cork (dead plant bark) –Cork reminded him of tiny rooms

Page 2: All life is made of cells Discovered after microscope invented 1665: Robert Hooke first observed cork (dead plant bark) –Cork reminded him of tiny rooms

• All life is made of cells

• Discovered after microscope invented

• 1665: Robert Hooke first observed cork (dead plant bark)– Cork reminded him of tiny rooms

• He named the empty boxes “cells”

Page 3: All life is made of cells Discovered after microscope invented 1665: Robert Hooke first observed cork (dead plant bark) –Cork reminded him of tiny rooms

• Three Parts:

– 1) All organisms are made of cells

– 2) The cell is the most basic unit of life

– 3) Cells come from other cells

• What’s the big problem with this theory?

Page 4: All life is made of cells Discovered after microscope invented 1665: Robert Hooke first observed cork (dead plant bark) –Cork reminded him of tiny rooms

Cell Diversity

• Shape depends upon function• Nerve Shape: Elongated branching

– Function: Sends messages to and from brain• Red Blood Shape: Disc-like shape prevents clogging

– Function: Carries O2 throughout blood• Skin Shape: Flat & broad; layers overlap

– Function: Covers and protects the body

Page 5: All life is made of cells Discovered after microscope invented 1665: Robert Hooke first observed cork (dead plant bark) –Cork reminded him of tiny rooms

• 1) Prokaryote: Cells without a nucleus and other membrane-bound organelles– Oldest cells known (~4 billion years old)– Believed to have evolved first (oldest fossils)– AKA: Bacteria

Page 6: All life is made of cells Discovered after microscope invented 1665: Robert Hooke first observed cork (dead plant bark) –Cork reminded him of tiny rooms

• 2) Eukaryote: Cells with a nucleus & membrane bound organelles– More complex cells

– Evolved from prokaryotes

– Ex: Protists, Fungi, Plants, Animals

Page 7: All life is made of cells Discovered after microscope invented 1665: Robert Hooke first observed cork (dead plant bark) –Cork reminded him of tiny rooms

• Endosymbiosis Theory: Chloroplast & mitochondria were free-living organisms– Both were engulfed by a larger predator cell– Both gave the larger cell an advantage (make food and energy)– Predator cell provided each protection

• Over time, these cells could not survive without the mitochondria & chloroplast

• Evidence: Mitochondria & chloroplast contain own DNA, replicate, contain own ribosomes

Page 8: All life is made of cells Discovered after microscope invented 1665: Robert Hooke first observed cork (dead plant bark) –Cork reminded him of tiny rooms

QuickReview

• Cells shape is related to its job (function)

• Cells are the basic units of life

• Cells come from other cells

Robert Hooke 1665 – Micrographia First to identify structure known as cells in cork Predicted that there are 1,259,712,000 cells in the human body

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

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

CELLS History, Parts, Functions. Robert Hooke 1665

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

Chapter 1 Section 2. Cells were discovered in 1665 by Robert Hooke. He observed them by looking at a thin slice of cork

Discovery of the Cell Robert Hooke (1665) –English scientist –looked at a thin slice of cork (oak cork) through a compound microscope –observed tiny, hollow,

The Cell Chapter 7. Introduction n Robert Hooke, 1665 observed cork with a microscope and saw tiny boxes - called them cells n Leeuwenhoek observed pond

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

History of the Cell Robert Hooke (1665) – Used compound scope to examine thin cork slices. Coined the term “cell” referring to the many little boxes

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

The Cell and Its Organelles. Discovery of Cells Robert Hooke: (1665) Publishes book Micrographia, contains drawings of sections of cork as seen through

1665 Robert Hooke looked at a slice of cork under a compound microscope and discovered the cork was made up of small “boxes” that he named cells Cells

How were they discovered? ~ 1665 - Robert Hooke looked at a slice of cork

Cell Structure & Function. Robert Hooke-1665 Coined the word “cell” Looked at cork cells Robert Brown -1831 Discovered the "nucleus" Theodor

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

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

Histology “study of tissues”. History of the Microscope Robert Hooke- 1665 Created the first microscope Looked at cork tissue Coined the term cells

A Tour of the Cell (Chapter 6). The Discovery of the Cell: Hooke In 1665, Robert Hooke used an early compound microscope to look at a thin slice of cork,

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

Introduccion a Micrografía de R. Hooke (1665)

The Cell. Robert Hooke 1665—observed cork under a microscope Named the units “cells” Reminded him of tiny rooms in a jail or monastery

Cell Structure and Function Biology 103. I. The Development of the Cell Theory 1. Robert Hooke (1665) - observed cork 2. Anton van Leeuwenhoek (1673)

CHAPTER FOUR: CELL STRUCTURE AND FUNCTION. 7.1 History of the Cell Robert Hooke (1665) – Used compound scope to examine thin cork slices. Coined the

CELLULAR HISTORY. Knowledge of cells originated from English scientist Robert Hooke in 1665 →Studied thin sections of cork and saw boxlike cavities he

CELL THEORY A Brief History. Robert Hooke named the cell [1665] based on observations of the cell walls of cork tissue

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

Robert Hooke 1665 coined the word `cell’ for the box-like structures of cork

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

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

CELL DISCOVE RY AND THEORY 7.1. History of the Cell Theory 1665: Robert Hooke discovered cellulae using a microscope and cork Cell: basic structural

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

KEY CONCEPT Cells are the Basic unit of life.€¦ · !In 1665, the English scientist Robert Hooke used the three-lens compound microscope to examine thin slices of cork. ! "Cork

Chapter 7-1 Life is Cellular. Early Microscopes Robert Hooke -1665 looked at a thin slice of cork, from the cork oak tree Coined the term “cells”; looked

Cell Structure and Function Unit 7. 1 Robert Hooke named cell while looking at cork in 1665