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The Cell Cycle PPT Link
"To everything there is a season. (To every form a function), a time to be born; a time to die." Even cells must grow develop reproduce and die. Let's dig in and get the details about the stages of the cell cycle. Of course our favorite part of the cell cycle is mitosis; click here for a live action video. But as exciting as it is mitosis is a relatively short period of a cells life. The rest of it's life is spent in Interphase which is so long it had to be divided into 4 other parts, G0, G1, S, and G2.
"To everything there is a season. (To every form a function), a time to be born; a time to die." Even cells must grow develop reproduce and die. Let's dig in and get the details about the stages of the cell cycle. Of course our favorite part of the cell cycle is mitosis; click here for a live action video. But as exciting as it is mitosis is a relatively short period of a cells life. The rest of it's life is spent in Interphase which is so long it had to be divided into 4 other parts, G0, G1, S, and G2.
Paste this picture onto studystack.com and use the targeting system to label the parts, processes, and stages.
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The cell cycle has to be closely regulated. There are external and internal factors that keep mitosis in check. But in Cancer the regulators don't function properly. A great example of unchecked cell division comes from the story of Henrietta Lacks.
Compare Mitosis and Meiosis side by side.
Mitosis in Plant cells.
Compare Mitosis and Meiosis side by side.
Mitosis in Plant cells.
chapter11_section04_edit.ppt | |
File Size: | 2427 kb |
File Type: | ppt |
Of course this all leads to asexual reproduction.
Budding, Fragmentation, and Binary Fission. Plants also send out runners or can root from cuttings. All asexual reproduction results in genetic duplicates (clones) which may speed up or facilitate survival under duress but also leads to a lack of genetic variety which leaves populations vulnerable to infections or environmental changes.
Oddly enough, some vertebrates can reproduce asexually. Turkeys ability for parthenogenesis is pretty widely known.
Budding, Fragmentation, and Binary Fission. Plants also send out runners or can root from cuttings. All asexual reproduction results in genetic duplicates (clones) which may speed up or facilitate survival under duress but also leads to a lack of genetic variety which leaves populations vulnerable to infections or environmental changes.
Oddly enough, some vertebrates can reproduce asexually. Turkeys ability for parthenogenesis is pretty widely known.
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Hierarchies of organization are an important part of understanding the connections within biology. Cells perform specialized tasks and organize themselves as different functional tissues. Of course as you move up the chain the form and function connections also become more obvious.
Let's learn about some tissues.
Muscle interactives 1 2 3 4 5
Let's learn about some tissues.
Muscle interactives 1 2 3 4 5
Stem cells
The great hope; undifferentiated cells that could potentially grow a new liver genetically matched to your own, or pancreatic cells to cure type 1 diabetes.
Why would that be controversial? Well, sometimes you have to consider the source. In this case, where did we get stem cells initially? In 2008 however a Japanese researcher found away to turn regular cells back into stem cells potentially ending the controversy.
The great hope; undifferentiated cells that could potentially grow a new liver genetically matched to your own, or pancreatic cells to cure type 1 diabetes.
Why would that be controversial? Well, sometimes you have to consider the source. In this case, where did we get stem cells initially? In 2008 however a Japanese researcher found away to turn regular cells back into stem cells potentially ending the controversy.