Do Now…Do Now…

SurveySurveyCreate title page in journalCreate title page in journal

Chemistry Test ReflectionChemistry Test Reflection On a note-card answer the following questionsOn a note-card answer the following questions

1.1. How long did you study for the How long did you study for the Chemistry test? Chemistry test?

2.2. I think this amount of studying was:I think this amount of studying was:

a) just right!a) just right!

b) probably okayb) probably okay

c) not enoughc) not enough

3.3. What method did you use to study? What method did you use to study?

4.4. I think I will score an __________ I think I will score an __________ (grade) on the test.(grade) on the test.

5.5. What are 2 to 3 strategies you will What are 2 to 3 strategies you will use to support or improve your use to support or improve your learning for the next unit?learning for the next unit?

JOURNAL ENTRYJOURNAL ENTRY

Title Page: Chemistry of Title Page: Chemistry of LifeLife

Add title, pictures, etc Add title, pictures, etc that make this page that make this page unique for youunique for you

Add this to your journal Add this to your journal Table of ContentsTable of Contents

Take SurveyTake Survey

What do you know about cells?What do you know about cells?

Types

Cells

Questions?

Parts

Name: __________________________ Period:_____________

What are they?

Where are they found?

How small are they

Different types of cells What would you like to learn about cells?

Different parts of cells

Group Brainstorm:Group Brainstorm:What is true of all living What is true of all living things? Make a compact, things? Make a compact, summarized list in journal.summarized list in journal.

What is true about all What is true about all cells? Write your thoughts cells? Write your thoughts in your journal.in your journal.

PODPOD

Get new booksGet new books Start new section in Start new section in

journaljournal Use book to build Use book to build

background background knowledge of history knowledge of history of the cellof the cell

Answer some Answer some questionsquestions

GOALSGOALS Understand who Understand who

contributed to contributed to discovery of the celldiscovery of the cell

Explain how each type Explain how each type of microscope of microscope contributed to contributed to knowledge of cellsknowledge of cells

How has knowledge of How has knowledge of cell impacted our life cell impacted our life today?today?

How cool are microscopes?How cool are microscopes?

What world have they unleashed?What world have they unleashed?

Magnification: X 500

The long, thin fibers you see here are really elongated cells of the pine tree. The trees are cut down, chipped up and pounded to separate the fibers from the rest of

the tree material.

Magnification: X 35

At a glance, this stuff appears to stick as if by magic. However, magnified 35 times, it is easy to see where the stick comes from. One side contains

the hooks (left side), the other has the loops that catch on the hooks.

Magnification: X 35

Common everyday items take on a new dimension at high magnification. In this photo, a staple is seen where it ripped through the fibers of a

yellow sticky note paper.

Magnification: X 1,000

These tiny glass capsules contain a liquid scent and are glued onto paper. When the paper is scratched, some of the capsules are ruptured and the

scent is released.

Magnification: X 75

The mineral salt has a cubic crystal shape. This grain of kosher salt is composed of many cubes stuck together. With its large surface area, it can absorb more moisture than a similar sized cubic salt crystal. This makes it ideal for curing meats, which involves absorbing blood from the raw meat.

Magnification: X 35

The bristles of this mascara brush are covered with dried mascara and flakes of skin.

Mold in My Shower I found this growing in the corner of my shower. It's some kind of mold, which grows easily in damp places. Mold is a fungus and, with enough moisture, can

grow on just about any kind of organic matter. This one was mostly black; whitish molds are often called mildew. Many people are finding out they are allergic to

molds and mildews.

Book PreviewBook Preview

Preview the bookPreview the bookRead first paragraph togetherRead first paragraph together In your journal – In your journal –

What would you like to know about cells?What would you like to know about cells?What do you think you might learn about cells What do you think you might learn about cells

in this chapter?in this chapter?

The Cell TheoryThe Cell Theory

Some Random Cell FactsSome Random Cell Facts

The average human being is composed of The average human being is composed of around 100 Trillion individual cells!!!around 100 Trillion individual cells!!!

It would take as many as 50 cells to cover It would take as many as 50 cells to cover the area of a dot on the letter “the area of a dot on the letter “ii””

WOW!!!WOW!!!

Work to do…Work to do…

Create a flow chart showing how the work Create a flow chart showing how the work of the following scientists contributed to of the following scientists contributed to scientific understanding of cellsscientific understanding of cells

Briefly explain how each type of Briefly explain how each type of microscope contributed to knowledge of microscope contributed to knowledge of cellscells

Answer questions #1,2,3 on page 13.Answer questions #1,2,3 on page 13.

Discovery of CellsDiscovery of Cells

1665- English Scientist, Robert Hooke, discovered cells 1665- English Scientist, Robert Hooke, discovered cells while looking at a thin slice of cork.while looking at a thin slice of cork.

He described the cells as tiny boxes or a honeycombHe described the cells as tiny boxes or a honeycomb He thought that cells only existed in plants and fungiHe thought that cells only existed in plants and fungi

Anton van LeuwenhoekAnton van Leuwenhoek

1673- Used a handmade microscope to observe pond 1673- Used a handmade microscope to observe pond scum & discovered single-celled organismsscum & discovered single-celled organisms

He called them “animalcules”He called them “animalcules”

He also observed blood cells from fish, birds, frogs, He also observed blood cells from fish, birds, frogs, dogs, and humansdogs, and humans

Therefore, it was known that cells are found in animals Therefore, it was known that cells are found in animals as well as plantsas well as plants

150-200 Year Gap???150-200 Year Gap???

Between the Hooke/Leuwenhoek discoveries Between the Hooke/Leuwenhoek discoveries and the mid 19and the mid 19thth century, very little cell century, very little cell advancements were made.advancements were made.

This is probably due to the widely accepted, This is probably due to the widely accepted, traditional belief in Spontaneous Generation.traditional belief in Spontaneous Generation.

Examples: Examples:

-Mice from dirty clothes/corn husks-Mice from dirty clothes/corn husks

-Maggots from rotting meat-Maggots from rotting meat

1919thth Century Advancement Century Advancement

Much doubt existed around Spontaneous GenerationMuch doubt existed around Spontaneous Generation Conclusively disproved by Louis PasteurConclusively disproved by Louis Pasteur

Pasteur: Ummm, I don’t think so!!!

+

=?

Development of Cell TheoryDevelopment of Cell Theory

1838- German Botanist, Matthias Schleiden, 1838- German Botanist, Matthias Schleiden, concluded that all plant parts are made of cellsconcluded that all plant parts are made of cells

1839- German physiologist, Theodor Schwann, who 1839- German physiologist, Theodor Schwann, who was a close friend of Schleiden, stated that all was a close friend of Schleiden, stated that all animal tissues are composed of cells.animal tissues are composed of cells.

Development of Cell TheoryDevelopment of Cell Theory

1858- Rudolf Virchow, German physician, after 1858- Rudolf Virchow, German physician, after extensive study of cellular pathology, concluded extensive study of cellular pathology, concluded that cells must arise from preexisting cells.that cells must arise from preexisting cells.

The Cell Theory CompleteThe Cell Theory Complete

The 3 Basic Components of the Cell Theory The 3 Basic Components of the Cell Theory were now complete:were now complete:

1. All organisms are composed of one or more cells. 1. All organisms are composed of one or more cells. (Schleiden & Schwann)(1838-39)(Schleiden & Schwann)(1838-39)

2. The cell is the basic unit of life in all living things. 2. The cell is the basic unit of life in all living things. (Schleiden & Schwann)(1838-39)(Schleiden & Schwann)(1838-39)

3. All cells are produced by the division of 3. All cells are produced by the division of preexisting cells. (Virchow)(1858)preexisting cells. (Virchow)(1858)

Modern Cell TheoryModern Cell Theory

Modern Cell Theory contains 4 statements, in Modern Cell Theory contains 4 statements, in addition to the original Cell Theory:addition to the original Cell Theory:

The cell contains hereditary information(DNA) which is The cell contains hereditary information(DNA) which is passed on from cell to cell during cell division.passed on from cell to cell during cell division.

All cells are basically the same in chemical composition All cells are basically the same in chemical composition and metabolic activities.and metabolic activities.

All basic chemical & physiological functions are carried All basic chemical & physiological functions are carried out inside the cells.(movement, digestion,etc)out inside the cells.(movement, digestion,etc)

Cell activity depends on the activities of sub-cellular Cell activity depends on the activities of sub-cellular structures within the cell(organelles, nucleus, plasma structures within the cell(organelles, nucleus, plasma membrane)membrane)

How Has The Cell Theory Been Used?How Has The Cell Theory Been Used?

The basic discovered truths about cells, listed in The basic discovered truths about cells, listed in the Cell Theory, are the basis for things such as:the Cell Theory, are the basis for things such as: Disease/Health/Medical Research and Cures(AIDS, Disease/Health/Medical Research and Cures(AIDS,

Cancer, Vaccines, Cloning, Stem Cell Research, etc.)Cancer, Vaccines, Cloning, Stem Cell Research, etc.)

Some Parting ThoughtsSome Parting Thoughts

It is amazing to think that the cells that make up It is amazing to think that the cells that make up our bodies are just as alive as we are. Humans our bodies are just as alive as we are. Humans are just an intricately designed community of are just an intricately designed community of cells, which must work together to survive.cells, which must work together to survive.

Cells, in my opinion, are one example of true Cells, in my opinion, are one example of true intricate design in natureintricate design in nature

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