5
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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stem cell | A single cell that can replicate itself or differentiate into many cell types
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Totipotent | – Stem cells that can become any type of cell
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pluripotent | – Stem cells that can become almost every type of cell (some exceptions)
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multipotent | Stem cells that have become part of a class of cells, but can differentiate within that class.
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Embryonic Stem Cells (ESCs) | controversial
Can be kept dividing in the lab indefinitely
Pluripotent – Cells that can become any cell type except cells to support the growth of a fetus.
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Adult Stem Cells (ASCs) – | not controversial
Cannot be kept dividing indefinitely – they have a limited period for which they grow.
Multipotent – can turn into some different cell types.
These are used in the body for repair
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Cord Blood-derived Embryonic-like Stem Cells (CBEs) | Not controversial
Can make any type of blood cell.
Cannot be kept dividing in culture indefinitely but can be stored.
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Therapeutic cloning | – Somatic Cell Nuclear Transfer.
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From live and dead (growth “arrested”) In Vitro Fertilization embryos. |
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In Vitro Fertilization | Egg and sperm fuse outside of the uterus and are then implanted in the uterus
xtra embryos cud be used to collect embryonic stem cells
^side: ESCs have potential disease curing opportunities
Controversy: The abortion issuedoes life start at conception?
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In Vitro Fertilization – Arrested Embryos UPSIDE | Some IVF embryos die
In 2006, researchers were able to start an embryonic stem cell line from a dead embryo
Upside: If the embryo is already dead, than the researchers are not aborting the embryo
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In Vitro Fertilization – Arrested Embryos DOWNSIDE | Downside: The researchers do not know why the embryo died. Did it have a genetic defect? This is potentially problematic.
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Planaria | a nonparasitic worm
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Blastocyst | The modified blastula stage of mammalian embryos, consisting of the inner cell mass and a thin trophoblast layer enclosing the blastocoel. Also called blastodermic vesicle.
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to calculate magnification | ou multiply the magnification of the eyepiece by the multiplication of the lens you're using.
So for example, if the eyepiece is 10x, and the lens is 40x, that will create a magnification of 400x.
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compound microscope allows for greater magnification
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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:
alliepaige6
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