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Cell Theory. Do now copy and answer the following question: 1. What makes something living?. M.E.L. the O.G.R.E. M.E.L. the O.G.R.E. There are 3 needs of living things. M- Materials Food provides the materials necessary for growth and reproduction.

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Cell theory

Cell Theory

Do now copy and answer the following question:

1. What makes something living?


Cell theory

M.E.L.

the

O.G.R.E.


Cell theory

M.E.L.

the

O.G.R.E.


Cell theory

There are 3 needs of living things.

M- Materials

Food provides the materials necessary for growth and reproduction.

These materials include such elements as nitrogen, oxygen, carbon dioxide, and water

E – Energy

All organisms require a certain amount of energy to think, breathe, sleep, etc.

L – Living Space


O g r e
O.G.R.E.

O- organization organs grouped together are systems

G- growth you need materials, energy, and living space

R- reproduce

rEsponding to the environment flight or fright response


Cell theory

All living things are made up of cells.

Singled celled organisms are called unicellular.



Cell theory

Are the needs and characteristics of one-celled and multi-celled organisms the same?

Yes… think of it this way.

The needs and characteristics of a single cell in a unicellular organism are the same as your cells’ needs and characteristics.

They perform all of the activities that characterize life.



Cell theory

If it is true, what is the main difference between the cell in a 1 celled organism and the cells of a multicellular organism?

In a multicellular organism cells make up different parts of the body that have different functions. For instance, heart cells make up the heart.


Cell theory

We use a __________ to see cells? in a 1 celled organism and the cells of a multicellular organism?The first two men to study cells under a microscope were RobertHooke and Anton van Leeuwenhoek in the 1660’s and 70’s


Cell theory

Robert Hooke gave the cell its name. While looking at a sample of cork, he saw tiny little compartments. This was a dead cell.


Cell theory

Van Leeuwenhoek was one of the first people to describe living cells

http://www.youtube.com/watch?v=Q2ezDdKyRUc


Observations and evidence gathered over a long period of time are summarized into 3 main concepts
Observations and evidence gathered over a long period of time are summarized into 3 main concepts

  • Everything is made up of one or more cells

    2. Cells carry out the functions necessary to support life

    3. Cells only come from other cells

    We call this the Cell Theory


Cell theory
Believed in the theory of time are summarized into 3 main conceptsspontaneous generationthey thought that bacteria grew from nonliving materials

http://www.youtube.com/watch?v=WNByRghR6sw


Louis pasteur
Louis Pasteur time are summarized into 3 main concepts

Lived in the 1800’s

Noticed that people kept getting sick from eating specific foods.

Disproved the theory of spontaneous generation


Cell theory

Using a microscope to study air, water, and soil, Pasteur found microorganisms everywhere.

He found bacteria in the blood of animals, including the people who were sick.

He called these “germs.”

http://www.youtube.com/watch?v=j6CTloyTsAo


Cell theory

Pasteurization- the boiling of food to make sure that extra bacteria from the air will not grow on the food.


Check for knowledge
Check for Knowledge bacteria from the air will not grow on the food.

  • How does cell theory and the theory of spontaneous generation disagree?

    2. How was the theory of spontaneous generation disproved?