section 1
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is a cell? | basic untis of structure and function in living things.
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| Did the invention of the microscope made it possible for people to discover and learn about cells. True or False? | True
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| Microscope | an instruemnt that makes small objects look larger.
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| compound microscope | a light microscope that has more then one lens.
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| Robert Hooke | one of the first people to observe cells (English scientist)
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| Antton Van Leeuwenhoek | also began to observe tiny objects with microscopes (Dutch) Constructed a simple microscope.
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| cell Theory | widely accepted explanation of the relationship between cells and living things.
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| The cell theory states: | all living things are composed of cells, cells are the basic unit of structure and function in living things, all cells are porduced from other cells.
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| Light Microscope | uses lens to make small objects look larger
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| magnification | ability to make things look larger then they are. the lens or lenses in a light microscope magnify an object by bending the light that passes through them.
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| convex lens | a lens with this curved shape.
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| resolution | ability to clearly distinguish the indivisual parts of an object.
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| electron microscope | use a beam of electrons instead of light to examine a specimen
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| electrons | tiny particles smaller then atoms
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
sherylxo
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