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LAB MICROSCOPE QUIZ
5
| Question | Answer |
|---|---|
| stem cell | A single cell that can replicate itself or differentiate into many cell types |
| Totipotent | – Stem cells that can become any type of cell |
| pluripotent | – Stem cells that can become almost every type of cell (some exceptions) |
| multipotent | Stem cells that have become part of a class of cells, but can differentiate within that class. |
| 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. |
| 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 |
| 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. |
| Therapeutic cloning | – Somatic Cell Nuclear Transfer. |
| From live and dead (growth “arrested”) In Vitro Fertilization embryos. | |
| 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? |
| 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 |
| 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. |
| Planaria | a nonparasitic worm |
| 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. |
| 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. |
| compound microscope allows for greater magnification |
Created by:
alliepaige6
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