Essays Tagged: "nucleus"
DNA - The Thread of Life
e', is deoxyribonucleic acid, otherwise known as DNA. It is the spiral shaped molecule found in the nucleus of cells. Scientists have known since 1952 that DNA is the basic substance of heredity. This ...
Subjects: Science Essays > Biology > Human Biology
Cloning Today
sm develops from only one parent. The one process of cloning, called nuclear transfer, replaces the nucleus of an immature egg with a nucleus from another cell. Most of the work with clones is done fr ... yo has about thirty or forty usable cells but a culture features an almost endless supply. When the nucleus has been inserted into the egg cell, the cell is given an electric shock to initiate the dev ...
Subjects: Science Essays > Genetics & Genome Projects
I am me and you are you
ed in an intuitive statement by a celebrated individualist, Tarzan. "Me Tarzan, you Jane" is at the nucleus of the beliefs of the existential atom. This seemingly simplistic statement relates to exist ...
Subjects: Humanities Essays > Philosophy
Fetal Development
sperm that made it then drops its tail. After about twenty hours inside the egg the sperm finds the nucleus of the egg and fuses with it. Now the egg has all the genetic material that it needs to make ...
Subjects: Science Essays > Biology > Human Biology
Science: Biology: DNA
e", is deoxyribonucleic acid, otherwise known as DNA. It is the spiral shaped molecule found in the nucleus of cells. Scientists have known since 1952 that DNA is the basic substance of heredity. This ...
Subjects: Science Essays > Genetics & Genome Projects
what are comets? this will tell you what and why we don't know so much about them.
g to Be huge, and others say it will be small. We will never know though because we can not see the nucleus of a comet. The part of the comet we see is the tail. The tail of a comet can be over 10,000 ... nd comets waiting to be discovered is very interesting. I think that one day we will get to see the nucleus of a comet, and be able to watch comets form in the Oort Cloud.we have just figured out that ...
Subjects: Science Essays > Astronomy
How changes in the atmosphere, eukarotes, and multicellularity have occured and influenced life on earth
on years ago. Eukaryotes are distinguished from prokaryotes by their larger size, the separation of nucleus from cytoplasm by a nuclear envelope, the association of DNA with histone proteins and its o ...
Subjects: Science Essays > Atmospheric Sciences
Nuclear Power
nly used in nuclear reactors. The Uranium atom has many protons, thus making it unstable. Since the nucleus of the atom is so unstable it wants to split itself apart, causing a spontaneous fission. Wh ... ous fission. When the nuclei of a Uranium atom splits apart, it splits into two atoms. Commonly the nucleus splits into Barium and Krypton; however, it can split into any two atoms as long as the numb ...
Subjects: Science Essays > Physics
Mononucleosis
mans in which the blood and tissues contain mononuclear leukocytes (white blood cells with only one nucleus), either monocytes or lymphocytes. An infectious disease is a disease that can give you an i ...
Subjects: Humanities Essays > Health & Medicine > Diseases
Through Their Eyes. Speaks of Jewish children who were victims of the Holocaust
' The loss of parents in early life means loss of the very nucleus of one's own identity. Memory becomes clouded.' ( In the eyes of Children 2) Unfortunately, ...
Subjects: History Term Papers > World History > World War II
Cloning, the thing of the future or the start of a new generation? Speaks of what it is and what it so good about it.
iving organism. But, when you gear cloning doesn't a Si-Fi moviecome to mind. Like when they take a nucleus, place it in a egg, put the egg in a incubator,and when it hatches it's an exact replica of ... ute for Cancer Research in Philadelphia(Lawren). To clone the frog they used an embryonic frog cell nucleus(Margery). 1962,John Gurdon of Cambridge University cloned a toad that survive threw adulthoo ...
Subjects: Science Essays > Genetics & Genome Projects
Nuclear Weapons.
reduce its nuclear arsenal.Nuclear weapons derive their power from the energyreleased when a heavy nucleus is divided, called fission or whenlight nuclei are forced together, called fusion. In fissio ... d together, called fusion. In fission, anucleus from a heavy element is bombarded with neutrons. Thenucleus breaks into two pieces, releasing energy and two or moreneutrons. Each of these neutrons has ...
Subjects: Law & Government Essays > Military & International Conflicts & Security
Introns and Exons
sequence of the mRNA is complimentary to the one of DNA. In eukaryotes the mRNA is processed in the nucleus before transport to the cytoplasm for translation. In order for the mRNA to become true func ... s, so information for a single amino acid could be some distance apart. Splicing takes place in the nucleus but also could take place in the cytoplasm and the mitochondria. After the splicing of the i ...
Subjects: Science Essays > Biology
Quarks
no apparent structure. They are the particles that make up protons and neutrons, which make up the nucleus of atoms. Also, particles that interact by means of the strong force, the force that holds p ... toms. Also, particles that interact by means of the strong force, the force that holds parts of the nucleus together, are explained in terms of quarks. Other baryons are explained in terms of quarks(1 ...
Subjects: Science Essays > Physics
"The Living Cell"
The protoplasm of a typical cell forms three vital parts: The cell membrane, the cytoplasm, and the nucleus.The membrane encloses the other cell structures. Much of the chemical work of the cell is do ... ell structures. Much of the chemical work of the cell is done in the cytoplasm, which surrounds the nucleus. The nucleus, enclosed by its own membrane, is the control center of the cell.Cells were fir ...
Subjects: Science Essays > Biology
Cloning
duction of organisms with the same genetic material. Scientists actually call the transferring of a nucleus from the cell of one organism to an enucleated egg cell, nuclear transfer (Wilmut 811). This ...
Subjects: Science Essays > Genetics & Genome Projects
Xenon
ements. It has a mass of roughly 131 atomic mass units. There are 77 neutrons and 54 protons in the nucleus of the atom. The symbol for xenon is Xe and it belongs to the family of elements called the ...
Subjects: Science Essays > Chemistry
Terminology used in Chemistry.
of shells around the atomic radius increases and the outer electrons become weakly attracted by the nucleus.As you go to the rite the no. Of neutrons in the nucleus (+) charged particles increases. Th ... o. Of neutrons in the nucleus (+) charged particles increases. This pulls the electrons towards the nucleus. Therefore making it more difficult to remove the electrons.Electro-positively: increases do ...
Subjects: Science Essays > Chemistry
Animal Cloning
This process begins with removing cells of the first animal (the genetic mother) and extracting its nucleus and DNA. Then, the nucleus of an unfertilized egg cell of the second animal (the surrogate m ... unfertilized egg cell of the second animal (the surrogate mother) is removed and replaced with the nucleus of the genetic mother. The two cells are fused together artificially using a small electric ...
Subjects: Science Essays
Cloning reflection written by a catholic
l fusion for the sheep Dolly was beyond belief. First, scientists attempted 277 fusions between the nucleus of the activated cell and the egg of the mother; only 29 of these began to divide. The scien ...
Subjects: Science Essays > Genetics & Genome Projects