Chapter 3: Introduction to Cells
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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| absorption | transport of dissolved substances into cells to serve as building blocks or energy sources
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| active transport | movement of materials across a cell membrane against the concentration gradient using cellular energy
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| cell | neat chamber shaped structure
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| cell membrane | serves as the outermost boundary of the cell; controls movement of substances into and out of the cell
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| cell theory | all living organisms are made up of cells that perform all the functions of living things; reproduction occurs
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| cell wall | protects and supports cell; found in plants, not in animals or humans
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| central vacuole | provides storage; regulates the turgidity of a cell; found in plants, not in animals or humans
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| chromatin material | a complex of DNA and surrounding proteins in the nucleus of the cell
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| colonial organism | collection of similar cells living together
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| contractile vacuole | collects and pumps water out of the cell; unicellular organisms use these
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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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