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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Do now copy and answer the following question:
1. What makes something living?
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- organization organs grouped together are systems
G- growth you need materials, energy, and living space
rEsponding to the environment flight or fright response
Singled celled organisms are called unicellular.
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.
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.
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
Robert Hooke gave the cell its name. While looking at a sample of cork, he saw tiny little compartments. This was a dead cell.
2. Cells carry out the functions necessary to support life
3. Cells only come from other cells
We call this the Cell Theory
Lived in the 1800’s
Noticed that people kept getting sick from eating specific foods.
Disproved the theory of spontaneous generation
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.”
Pasteurization- the boiling of food to make sure that extra bacteria from the air will not grow on the food.
2. How was the theory of spontaneous generation disproved?