Sunday, March 6, 2011

x-ray

Did you know that Rosalind Franklin was actually the only one who discovered this. As researchers were trying to form some type of structure of Dna so that they could view it better they were having to build it form scratch and trying build it from just a microscope. In the same lab building Rosalind Frankilin was trying to send a laser through a diamond to try and illustrate the texture of the diamond from the actual inside. So she sends a laser through the middle of it onto a mirror or just a regular wall. As she has her back turned anoth scientist walked in and was astonished at what her wall was dispalying. Her wall was displaying what the scientist were working on forever it seemed. She had a display of the DNA on her wall and the sad part that scientist took partial discovery of it and one an award and she did not becasue she died and the dead are not rewarded for this particular reward. The families still continue to fight over the issue.

Jellyfish

So in class we happen to come across this picture and this picture really made me laugh on the inside. The picture itself showed in one , two pigs were glowing in the dark and in the next two they had a canola plant and then some type of mouse or rat. How in the world did they get these animals to glow. Scientist one day decided that they were going to retrieve the bacteria that is in jelly fish that cause them to glow. This bacteria is called fluorescent protein. They now inject into theses three different types of living organisms and now they glow in the dark. Could it be that this is the same things in things like glow sticks? I find myself wondering these things because they are very interesting in the thought process. Is it possible that a scientist could inject this same proteing into a human being and they would be able to glow? I think that we should see, and some how I plan on getting the word out there. I would even be the one that they can use to experiment on.

Saturday, February 26, 2011

genetic material

So I find it very interesting when the beginning of chapter twelve started out with the history of when things like the gene was discovered. I was born in 1991 and thye had discovered genes way before I was alive. I think that is awesome because it shows ow intelligent God made us. It really shows what we are capable of. We now have the 3 things that were known about genes when they were first discovered plus the entire chapter but that is way to much to blog about. The first thing that is known about genes is that it is able to store information that pertains to the development, shape, and metabolic activities of the cell or organism. Second, the stable so that it can be replicated with high fidelity during cell division and be transmitted from generation to generation. Lastly, it is able to undergo rare changes called mutation that provide the gentic variability required for evolution to occur. These things about the gene make life so much better!

Friday, February 25, 2011

genotype

Why would genotype TT be larger thant Tt or tt? This was very hard for me to figure out when reading but after stairing at the picture for a little while longer I think I may have discovered why. A capitol T satand for the dominant and of course the lower case is the recessive. So when a plant is growing larger than the the rest of the plants in the area and of the same type that just mean that it received more dominant alleles during fertilization than the rest. The interesting part is when they are mixed. I can just think about how big the plants could be if they were able to get more dominant alleles more often instead of being mixed.The reason they do not is because it all depends on the ground a plant is planted in. I i take beans and plant them in Georgia red clay then the obvious result would be if they grew then they would be very weak and small plants. That results means that all the beans received from this soil was mostly just recessive alleles. Now we can plant them somewhere else, say an old corn field, all the corn died off about a year ago and it has been plowed. This is the place to go to plant these beans. Now on the outer edge may be the area where they will be mixed like Tt but as you move toward the heart of the field then there will be more nutrients there for genotype TT.

genotype and phenotype

These are basically described as two different types of plants. The first one is genotype and that refers to the amount alleles an individual receives at fertilization. Lets break down the word, it consist of birth, shape, what type it is or even race. This mean that genotype can be explained be cause itself explains what types of plants are which by the information that it gives off just by the way  it looks, it grows, smells, or if it is short or tall. Phenotype does not do the same funciton as that of genotype. Phenotype refers to just the appearance and the appearcan alone. Lets list some examples. The genotype is homozygous dominant which means that it will most likely be a tall plant. Then it can also be homozygous recessive whic hresult in a short plant. Again it depends on the amount of alleles that are given to the plant during fertiliation on how tall the plant will grow. How theses two are alike are the fact that they both can be homozygous, or homozygous dominant and recessive resulting in two tall plants and one short plant. One shows that type throuh size, shape, the way it grows and more whiule the other just ables it to be identified by its shape.

Friday, February 18, 2011

The Citric Acid Cycle

This process is a long drawn out process so bare with it for a little bit. We will first start where an acetyl groups are combined to a C4 molecule to form citrate. That was the first process and then now two times the substrates are oxidized into NAD+ reduced to NADH  and is now released as CO2. So now that CO2 is realeased into the air we can now move down to the 3rd process where ATP is produced  as energy and is transferred from a substrate to ADP. This will release FADH2 after CO2. This is of course after another substrate is oxidized again but this time from FAD to FADH2. Then the process continues to another substrate being oxidized and this time NAD+ is reduced to NADH. That was the last cycle and that is how citric acid is fromed I beleive. I think that the book is talking about the same citric acid that is put in to sodas and other types of drinks. If I am correct that means that this is why citric acid forms in juices that come out of fruits such as oranges and lemons. Citric acid in my own opinion is a terrible thing to put in your mouth. If your not eating a type of fruit with it naturally in their then you should stay away from it. Of course you can stil eat a certain fruit to much to the point of it hurting you also, so just because it is a fruit does not mean that it will do nothing but good for your body. It can eat away at your anamal that is on your teeth.

The Cell Cycle and Cancer

In the book one of the topics that was in bold print was the process of cancer. I have always known what cancer was but have never researched to the point of being educated in the topic. I have been looking over the figure on page 161 that demonstrates the process of how cancer can spread throughout the body. First it can start with a primary tumor or mutation to the skin for example and in this tumor their can be one cell that continues while the others do not. The mutation of that one cell now causes the rest of them to mutate in the same way and takes over. Now this one cell going wrong can cause this tumor to now be cancerous. Now the bad part comes and gets worse when a blood vessel is over taken by these mutated cell and the a lymphathetic vessel also. This allows the mutated cells to spread through the blood stream and spreading cancer at the same time. I do not know how much you read this Dr. Platt but I have a question. In class you said that even one cigarrette can cause a person to get cancer. So what happens when people dip? How does that process happen. How is it different than a smoker and a dipper? I understand that smoke has more harmful effects since you are filling your lungs with smoke but what does dip do?