Life's Greatest Miracle Analysis
Can you imaging everyone’s appearance is the combination of all his ancestors but not exactly the same? The video “Life’s Greatest Miracle” tells you why and how did that happen when you are just a single cell at the very beginning.
The attractive video brings me to a physiological world. First, I am surprised by the amount of sperms that a man could produce. Thousands of them are made every second, a hundred million in a day, and trillions over a lifetime. This is an amazing ability and opportunity that the nature endows for human beings to have our offspring.
Second, I find that it is a way full of obstacles for sperms to reach the eggs. They have to get through from cervix –-- passage way to the uterus, to fallopian tube. For example, the cervix usually shuts, preventing the bacteria and sperm out. The only way is to wait until a tiny channel appears within a few days in a month. After entry, sperms still have a six-inch distance and then break through support cells and a zone. In my opinion, the quality and quantity of sperms are both vital for sperms because only few sperms could survive through these processes, and some of the obstacles could be overcome only under the help of a large number of sperms.
Third, from a single cell, human beings build a body that has 100 trillion cells. We made hundreds of different kinds …show more content…
Such as the nerve cells, blood cells and white cells. It is because different groups of genes in DNA are turned on, they tell the cells to construct a different-function protein. Like collagen, a fiber that makes up skin and bones, or keratin makes up hair. Before, I always have the wrong idea that there is only one type of protein in our body because the genetic information is the same in each cell. But the truth is, the varieties of genes are more than I expect. I should learn more about different kinds of protein in our
The attractive video brings me to a physiological world. First, I am surprised by the amount of sperms that a man could produce. Thousands of them are made every second, a hundred million in a day, and trillions over a lifetime. This is an amazing ability and opportunity that the nature endows for human beings to have our offspring.
Second, I find that it is a way full of obstacles for sperms to reach the eggs. They have to get through from cervix –-- passage way to the uterus, to fallopian tube. For example, the cervix usually shuts, preventing the bacteria and sperm out. The only way is to wait until a tiny channel appears within a few days in a month. After entry, sperms still have a six-inch distance and then break through support cells and a zone. In my opinion, the quality and quantity of sperms are both vital for sperms because only few sperms could survive through these processes, and some of the obstacles could be overcome only under the help of a large number of sperms.
Third, from a single cell, human beings build a body that has 100 trillion cells. We made hundreds of different kinds …show more content…
Such as the nerve cells, blood cells and white cells. It is because different groups of genes in DNA are turned on, they tell the cells to construct a different-function protein. Like collagen, a fiber that makes up skin and bones, or keratin makes up hair. Before, I always have the wrong idea that there is only one type of protein in our body because the genetic information is the same in each cell. But the truth is, the varieties of genes are more than I expect. I should learn more about different kinds of protein in our