The Adventure of the Sperm and Egg Essay Example for Free

The Adventure of the Sperm and Egg Essay Let me introduce myself, I am Penny the Egg and today I will embark on one of the most exciting times in my life span. This has been a long expedition and now that I have reached the infundibulum, this is the outer portion of a female fallopian tube. The name I was in the medical word is â€Å"Ova†, most people just call me egg but my name again is Penny. I have been in contact with a germ cell named Seymour. His medical name is sperm and he lives inside the male human body. Seymour and I have been dreaming about this adventure for our whole lives. I am hope everything goes as planned and Seymour and I get to meet. After we meet, we will become one to create another male or female embryo which will grow into a human baby. As the â€Å"Great Change† occurs, medically that would be puberty for a female; I was one of 2 million ova that once lived inside the female. After the great change there are around 400,000 of my sisters and I left. We all live inside the follicle; these are thin capsules inside the ovaries. Out of the 400,000 of us that survived the great change, only 400 or so of us will reach fulfillment and become a ripened ova (Nevid, Rathus Fichner-Rathus, 2011). When I have ripened to fulfillment I will leave the safety of the ovary where I spent my childhood, I have made my way to where I am now, the fallopian tube. This is where I will wait for Seymour to arrive. It takes me some time to travel down the fallopian tube, and during this time is when my female host will ovulate, and then two weeks later my host will menstruate unless Seymour and I create life. The length of my travel is around 4 inches, but I must travel different parts of the tube in order to be totally ready to meet Seymour. As I travel the fallopian tube, I will come a crossed various small groups who call themselves Cilia. The Cilia groups have miniature hair-like projections that help me along my travels’. I could not make it an inch a day without the help of the Cilia. I dream about Seymour and our meeting day and worry that my female host will not allow me to be discharged with her menstruation. I have now been in the fallopian tube for just over a day now and I pray that Seymour is skillful enough to make it in enough time to help me create life. If Seymour does not arrive within two day of my leaving the ovary, I will not be here to meet him and no life will be created (Nevid, Rathus Fichner-Rathus, 2011). I am the type of egg to worry all the time, I wonder if Seymour’s trip is going according to plan? I just hope Seymour is strong and fast enough to out swim his brother’s taking this adventure also. Hello everyone my name is Seymour the sperm, I ‘m sure by now you know Penny and I am sure she told you I have millions of brothers’. Honestly, I cannot wait to take that adventure because it is too crowded and very uncomfortable for me in here. I just hope I am strong enough and can survive the adventure, why worry? You ask, because many of us do not survive and it can be a very fatal because it is a false adventure, but I know that to keep life going I must swim as fast and hard as I can to meet my Penny. My Life began in a place in the male host body called the testicles. This is where I went through a 72 days process of spermatogenesis. In order for me to meet Penny inside her female host, I had to endure this process. I have been told that Penny only holds the X chromosome (female), and I contain a Y chromosome (male) and the X chromosome. Once Penny and I meet our sex chromosome will connect and I have one of the most important jobs at this point I will decide if Penny and I will create the life of a male or female, because I alone can make I male with the Y chromosome (Nevid, Rathus Fichner-Rathus, 2011). After my preparation for my adventure, I make my way to the epididymis while in this transition, I continue to mature. It will take a few more weeks for me to be able to move to the Vans Deferens tube of my male host. I will continue my adventure to meet my Penny by making my way into the seminal vesicle; this is where I get all my nourishment from seminal fluid rich in fructose. The nutrition I receive from the fructose in the seminal fluids is what will make me strong enough to out swim my brothers’ to meet Penny. I have discovered I look a lot like a tadpole. I have a tail that whips back and forth to move me forward. Before I matured to this â€Å"tadpole† stage my movements were conducted by the contractions in the epididymis, Vans, Deferens, and just like Penny, I also had help from groups of cilia (Nevid, Rathus Fichner-Rathus, 2011). As the prostate and Cowper’s are making secretions, I continue my adventure. The secretions the other organs are making are what my brothers’ and I will mix with in the ejaculation proses. Yes, I made it to the point I am ready to be ejected from the male’s penis darning sexual intercourse. Once this happens I can begin a whole other adventure to meet Penny in the fallopian tube of her female host. My male host has ejected me and my brothers from his body to Penny’s female host. I must move faster than I have ever moved before. Millions of my brother s are trying to get to my Penny also and will race through the cervical canal, onto the uterus, we will continue to battle to be the first one to successfully reach an ovum (Penny) waiting just outside the opening to the fallopian tube. I did it! I was the first one to reach the ovum and penetrate Penny’s hard outer lining. Even thou many of my brothers’ might find her, once I am inside the lining Penny will go through a chemical change that will insure we become an embryo. We will travel together down the rest of the fallopian tube so we can implant ourselves into the uterus until birth as a human .

Human Cloning is an Ethical Nightmare Essay -- Clones Biology Ethics

Technology today is growing at an alarming rate. Things that seemed impossible only a few years ago are now a reality, and some far fetched things such as time travel, that are present in today's science fiction movies, might possibly become reality soon as well. One prevalent idea that seemed impossible a few years ago but that is now a reality is the idea of human cloning. The fantasy that some people had about having clones of themselves or of animals a few years ago is not a fantasy anymore; it is a reality. With the recent cloning of a sheep named Dolly by scientists in Scotland, the powers of cloning are becoming more prevalent. As daunting as this may seem, the human race must now face all the issues related to human cloning, and the one question that comes up amidst all of the relative confusion about the issue is this: Is human cloning a medical miracle or an ethical nightmare? As confusing and complicated as cloning may seem, it is actually a very simple idea to grasp. Garvey says, "In essence, cloning is the artificial fashioning of an identical twin, one that will be younger that its sibling" (7). Taken at surface level, the general principle of cloning is quite simple; an individual gene from a subject is isolated and transplanted in a medium, such as bacteria or yeast, and that isolated gene reproduces and multiplies, creating a clone of the original gene. The media seemed to have lumped cloning into one generalized idea, but in actuality, there are three distinct types of cloning. These three distinct types of cloning are gene cloning, cellular cloning, and whole-organism cloning. Because the media has done a poor job of distinguishing among the three different types of cloning, confusion has arisen a... ...ical code? In many cases the answer is going to be no. Such is the case with cloning. Its promises are extremely appealing, but the price that the cloned people or organs would have to pay is too great. Even though the technology may be present to actually clone things, humans must learn when to put a cap on such things. So the question remains: Is human cloning a medical miracle or an ethical nightmare? It seems obvious that the answer to that question is an ethical nightmare. There is too much at stake in this matter, as far as human life goes, to risk it all on a bunch of promises. The ethical objections far outweigh the supposed gains of this practice, and thus should not become a common practice in today's society. Humans must understand that even though something can be done, does not make that thing right, and such is the case with human cloning.

Solubility Curves

Water Chemical formula- H2O State at room temperature- Liquid Colour- Clear Melting point- 0oC Boiling point- 100oC Water- good solvent and a range of substances will dissolve in it. What happens when a sugar lump dissolves in water? When the sugar dissolves†¦ -The moving water molecules crash into the sugar particles -The sugar particles then break away from the crystal and into the water -The sugar and water particles then mix and diffuse evenly throughout.Copper sulphate- blue crystals, hydrated because they have water trapped within them. When they are heated this water evaporates, the crystals become dehydrated and turn white. Equation for this Reaction. CuSo4 5H2O —> CuSo4 + 5H2O Solute- Solid which is dissolving Solvent- liquid in which the solute dissolves Solution- the solute and solvent mixed together Sodium hydroxide- Soluble Copper Oxide- insoluble Calcium hydroxide- Insoluble Silver iodide- insoluble Aluminium nitrate- solubleMost ionic substances will dissol ve in water but covalent substances usually wont dissolve. Solubility of a solute = mass of a solid required to a saturate 100g of water at a particular temperature. Calculating Solubility 2g potassium chlorate dissolves in 20g water at 28oC what is its solubility? 2 x 100/20 = 10. 0g potassium chlorate/100g water 4g potassium sulphate dissloves in 30g water at 50oC what is its solubilty? 4 x 100/30 = 13. 33g potassium sulphate/100g water 0g sodium chloride dissolves in 75g water at 10oC what is its solubility? 30 x 100/75 = 40g sodium chloride/100g water Solubility Of Gases Carbon dioxide is the gas which is dissolved in fizzy drinks to make the fizz. What happened when you placed sprite in a boiling tube and gave it a shake? The sprite fizzed up. What happened after you heated the sprite then gave it a shake again? If fizzed just a little Carbon dioxide is more soluble in cold liquid. The solubility of gases decreases as the temperature increases.

Essay on The New Archaeology Movement - 913 Words

With the evolution of available technologies and methodologies, some archaeologists became frustrated with the traditional ways of archaeology; they felt that the new technologies should be used to improve archaeology and the outcomes of professionals in the field. The New Archaeology was a movement that sought to contribute to the existing anthropological knowledge of human behavior by emerging as a science and separating itself from the historical approach. New archaeology did not merely incorporate scientific technology, but it also employed various scientific methods and approaches. Lewis Binford was the most influential figure in New Archaeology; he considered that cultures were composed of â€Å"three interrelated subsystems:†¦show more content†¦Culture cannot be treated as a process because, in doing so, one would not take into account the many characteristics that distinguish cultures from each other and that would alter the outcome of each civilization. Furthermore, Binford believed that archaeology should contribute to explaining the significance of past occurrences, instead of merely reconstructing them; consequently, he promoted the use of â€Å"explicit theory† (Renfrew and Bahn 41). Archaeologists were to formulate a theory for an event that had occurred in the past and would need to provide proof in the form of sites and artifacts to prove that the event actually occurred. New Archaeology supported the notion of using theories to explain the past. This would force archaeologists to provide proof for their conclusions, instead of merely claiming that something is correct based on his authority in the field. Additionally, this approach would change archaeological procedure to a scientific one: â€Å"the appropriate procedure was now seen as formulating hypotheses, constructing models, and deducing their consequences† (Renfrew and Bahn 41). 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