Free Guan Zi Essays   Free Guan Zi Essays

The Spectacled Bear
The Spectacled Bear The Spectacled Bear, or Tremarctos Ornatus, is an endangered species. This rare bear can only be found in a few elusive spots in the world. Many endangered species all over the world don't deserve the respect and care that they need. That is why many endangered species often become extinct or remain on the endangered species list for the remainder of their survival on Earth. Today, as more species become endangered, more people become involved in their care. Many things are ...

Nucleotides
Nucleotides The foundation of life as we know it is composed of nucleic acids. Researchers believe that these fundamental building blocks were first formed three billion years ago when the first forms of elementary life began to appear on earth. Nucleic acids have at least two functions. The first of these functions is to serve as a means of passing on hereditary characteristics, and the second is to instruct the cells in the production of specific proteins. Nucleic acids by nature are rather c...

James D. Watson
James D. Watson James watson was born in Chicago, Illinois on april 6th, 1928. he went to school for eight years and went to high school for two years. Then he received a tuition scholarship to the university of chicago , and went there for four years . in 1947 , he received a b.s.c DEGREE IN ZOOLOGY. HIS INTEREST WAS IN BIRDWATCHING , BUT LATER , HE GOT MORE INTERESTED IN GENETICS . AFTER HE HAD EARNED MANY EDUCATION RELATED DEGREES IN DIFFERENT SUBJECTS , HE STUDIED THE EFFECT OD X-RAYS ON BA...

Reproduction Process
Reproduction Process reproduction process by which organisms replicate themselves. In a general sense reproduction is one of the most important concepts in biology: it means making a copy, a likeness, and thereby providing for the continued existence of species. Although reproduction is often considered solely in terms of the production of offspring in animals and plants, the more general meaning has far greater significance to living organisms. To appreciate this fact, the origin of life and th...

The Human Genome Project
The Human Genome Project title = The Human Genome Project The Human Genome Project, What Is It? What would you do if you were given the power to change your genetic code from brown hair to blond?. Man has had this ability through natural selection for some time without knowing it, but in the near future scientist will be able to speed the process of natural selection by changing a persons genes. Scientists have identified what constitutes human DNA located in the nucleus of a cell. The Human Gen...

Albinism
Albinism INTRODUCTION For my research project I have chosen the genetic disease albinism. There are a few reasons why I chose albinism as my topic. First and foremost, in kindergarten I had a friend who was an albino, and although I have not seen him in over 10 years I am still curious as to what the causes of albinism are. Back then, my mother explained it to me by saying, ?that's just the way his skin is? which is a fine way to explain it to a five year old, but now I find myself wanting to kn...

Bio Outline
Bio Outline BIOLOGY 220 OUTLINE SECTION II Text: Essential Cell Biology I. Opening Comments (Chapter 3) A. Life creates order out of disorder through a never-ending series of chemical reactions B. This is Metabolism and the ability to Metabolize C. Most of the chemical reactions required by the cell would not occur at physiological conditions D. Control of these reactions is achieved by specialized protein, ENZYMES. II. Basic Principles of Energy A. Energy - Basics Principles 1. Define Energy - ...

Antisense Theory
Antisense Theory It is estimated that cancer affects three out of four families in the United States alone the disease and its treatments cause substantial mortality and morbidity, prompting intense interest in cancer prevention. Most available treatments for cancers are non-specific; meaning that they target all rapidly growing cells, both normal and cancerous. Consequences of these treatments include side effects towards the normal cells. In addition, cancer is a genetically unstable disease. ...

DNA Structure
DNA Structure DNA is a double stranded molecule twisted into a helix. Each spiraling strand is comprised of a sugar phosphate backbone and attached bases connected to a complimentary strand. The complimentary strand is connected by non-covalent hydrogen bonding between paired bases. The bases are adenine, thymine, ctyosine, and gaunine. The fundamental building block of DNA is the nucleotide. The nucleotide has three parts. A nitrogen-containing pyrimidine or purine base, a deoxyribose sugar, an...

Hereditary
Hereditary Introduction: My topic is hereditary. I have always been interested in genetics, and this is a large branch of genetics. In this report I also plan to speak about evolution. I would like to learn more about what causes specific traits and what the future might bring. Body: A person gets his or her traits from their parents. These traits include everything from the person's sex to their mental abilities or problems. These traits are hereditary because they are passed on through genes...

Biology Molecule
Biology Molecule Unit 1 -man is high 50's to 60% water -distribution in body divided into 3 compartments: 1) intracellular - 28 litres 2) intercellular/interstitial fluid - 11 litres - 80% 3) blood plasma - 3 litres - 20% -women contain less water than men -organisms can contain 60-80% water -bacteria have lots of water -fat cells have little -water's properties result from its structure and molecular interactions -water is polar -polar covalent bonds and asymmetrical shape give it opposite cha...

Erwin Chargaff
Erwin Chargaff Erwin Chargaff, born 1905 in Czernowiz, Austria, was a pioneer in biochemistry contributing to the understanding of DNA. He, in 1928, earned his doctoral degree in chemistry at the University of Vienna's Spath's Institute in 1928. Erwin began his career in biochemistry at Yale University, working under Rudolph J. Anderson from 1928 to 1930. His early work included stories of the complex lipids, the fats or fatty acids that occur in microorganisms. Helping discover the unusual fat...

DNA
DNA Replication DNA replication is a complex cellular function that is necessary in order to sustain life and achieve growth. Many enzymes, proteins, and other molecules work together to ensure that genetic information is replicated efficiently, quickly, and accurately. Without any one of these components, replication would be very limited in its efficacy. DNA is comprised of two strands of complementary nitrogenous bases (adenine & thymine, guanine & cytosine), five-carbon sugars (either ribos...

DNA Separation By Electrophorosis
DNA Separation By Electrophorosis DNA, Deoxyribonucleic acid, is a double stranded, helical nucleic acid molecule which determines inherited structure of a protein. The steps are made of bases: adenine, guanine, cytosine, and thymine. The sides are sugar and phosphate molecules. Restriction enzymes are enzymes that cut DNA at restriction sites, leaving fragments blunt or sticky. The restriction fragments are separated using a technique called gel electrophoresis. DNA has a negative charge so ...

DNA Structure
DNA Structure The Thread of Life, is deoxyribonucleic acid, also known as DNA. This molecule which is the bases of life, is spiral shaped and found in the nucleus of cells. DNA has the genetic code for bodies, controls development of embryo's, and is able to repair damage caused to itself. All DNA molecules have linked units called nucleotides. These nucleotides have sub-units that have 5 carbon sugars that are called deoxyribose. DNA is composed of four bases called adenine, thymine, guanine...

Nucleotides
Nucleotides I. nucleotides: sub units ?? DNA A. Phosphate group B. 5-carbon sugar molecule (deoxyribose) C. nitrogen base 1. Adenine 2. Guanine 3. Thymine 4. Cytosine Chargaff ?? base pairing rule: 1 = 3 and 2 = 4 II. Maurice Wilkins and Rosalind Frankilin ?? X-ray diffraction photos of DNA molecule - DNA molecules: tightly coiled helix and composed of two or three chains of nucleotides III. Chargaff builds a model of the double helix: a spiral staircase of 2 strands of nucleotides twisting aro...

Protein Synthesis
Protein Synthesis The process of Protein Synthesis involves many parts of the cell. Unlike other similar productions, this process is very complex and precise and therefore must be done in proper sequence to work effectively. The slightest error during this process could cause the action to experience difficulty or even fail. For example, in the production of starch, glucose molecules are combined to be stored and eventually utilized as usable chemical energy. The cell can break down the starch...

Aging Theories
Aging Theories This report outlines the main theories of how the process of aging works. Since researchers have not discovered a universally-accepted theory of aging, the theories discussed are potential explanations of how we age. The likelihood of each hypothesis is considered roughly equal. The different theories discussed focus on the workings of different parts of the body, from the molecular level of DNA mutations and replication, to the organism level of becoming worn out. Aging is a v...

Breast Cancer
Breast Cancer Hereditary breast cancer is a disease caused by mutations on breast cancer suppresser genes (ACCV Pg.17). Mutations allow normal cells to divide abnormally (ACCV Pg.13). Resulting cells divide faster as they do not specialize and form useless lumps of cells called malignant tumours (ACCV Pg.13). Genetic Screening is the process where Deoxyribonucleic Acid (DNA) fragments are analyzed for a specific gene. The purpose is to identify individuals carrying disease causing genes so they...

DNA
DNA Replication DNA replication is a complex cellular function that is necessary in order to sustain life and achieve growth. Many enzymes, proteins, and other molecules work together to ensure that genetic information is replicated efficiently, quickly, and accurately. Without any one of these components, replication would be very limited in its efficacy. DNA is comprised of two strands of complementary nitrogenous bases (adenine & thymine, guanine & cytosine), five-carbon sugars (either ribos...

Erwin Chargaff
Erwin Chargaff Erwin Chargaff, born 1905 in Czernowiz, Austria, was a pioneer in biochemistry contributing to the understanding of DNA. He, in 1928, earned his doctoral degree in chemistry at the University of Vienna's Spath's Institute in 1928. Erwin began his career in biochemistry at Yale University, working under Rudolph J. Anderson from 1928 to 1930. His early work included stories of the complex lipids, the fats or fatty acids that occur in microorganisms. Helping discover the unusual fat...

Jurassic Park And Tech
Jurassic Park And Tech The girl shrieks as the giant tree trunk of a leg crashes down shaking the earth. Her screams are then drowned out by the prehistoric roar of the genetically engineered Tyrannosaurus Rex as it searches for prey (Crichton, 1991). Everyone remembers this scene from the best-selling novel by Michael Crichton, Jurassic Park. These scenes were then brought to life by producer/director Steven Spielberg in the immensely popular movie by the same name. Is this possible? As technol...

Introduction
:Introduction: DNA, Deoxyribonucleic acid, is a double stranded, helical nucleic acid molecule which determines inherited structure of a protein. Thesteps are made of bases: adenine, guanine, cytosine, and thymine. The sides are sugar and phosphate molecules. Restriction enzymes are enzymes that cut DNA at restriction sites, leaving fragments blunt or sticky. The restriction fragments are separated using a technique called gel electrophoresis. DNA has a negative charge so when an electrical cha...

Viagra: Who What How And Why?
Viagra: Who What How And Why? James Pouncey Dr. Owen Drugs and Behavior May 2, 2000 Viagra: What, Who, Why, and How Sildenafil Citrate, more commonly known by the brand name Viagra, has become one of the most commonly prescribed drugs in America. Viagra is used to treat erectile dysfunction, also known as impotence. Erectile Dysfunction is best defined as the inability to maintain an erection necessary for sexual satisfaction. Sildenafil has been shown to be effective for a broad range ED patie...

Genetic Engineering
Genetic Engineering What's Genetic Engineering? Nowadays, scientists have learned a great deal about the chemical changes taking place inside living things. They have deciphered the code, DNA, by which animals and plants pass on their characteristics to their offspring. They have even leant how to alter that code to produce life forms with new characteristics. This new technology involving both chemical and biological science is known as genetic engineering. Through this new technology, we shall...

The Origin Of Life
The Origin Of Life The origin of Life There are many theories where life came from, but none of them is proven to be the right one. The obvious theory that life originated on earth is not accepted by everyone. One reason of disbelief in this theory that life originated on earth is a lack of time. It was an early belief that life originated through a slow and long process (many scientists do not share this belief though), probably too short and too long for the time life had on our planet. Life m...

Francis Crick
Francis Crick In 1953, Dr. Francis Crick and James Watson discovered the structure of the DNA molecule. This is the molecule which we now know stores the genetic information for all life. Many scientists have claimed the discovery to be the single most important development in biology during the 20th century. Watson and Crick's investigation into the nature of the genetic code and the passing of information from generation to generation has redefined the study of genetics. Also, it has basically...

The Molecule
The Molecule In the autumn of 1951, James Watson (left) and Francis Crick (right) started work on unravelling the structure of DNA. It was known at the time that DNA was present in the nucleus of every living cell, and that it had something to do with heridity, but without a knowledge of its structure little more could be understood about how it actually worked. They approached the problem with the same methodology that had been pioneered by Linus Pauling, who after years of exhaustive study had...

Dna
Dna What is DNA? Nucleic acid is a complex molecule found in all cells. There are two types of nucleic acids, deoxyribononucleic acid (DNA) and ribonucleic acid (RNA). DNA is found mainly in the nucleus of cells. RNA may be found throughout the cell. Even bacterial cells which do not have a nucleus, contain both DNA and RNA. Viruses, however, have only RNA or only DNA. DNA plays a vital role in heredity and cell development. It is the substance in genes, the hereditary material that determines a...

Dna Replication
Dna Replication DNA replication is a complex cellular function that is necessary in order to sustain life and achieve growth. Many enzymes, proteins, and other molecules work together to ensure that genetic information is replicated efficiently, quickly, and accurately. Without any one of these components, replication would be very limited in its efficacy. DNA is comprised of two strands of complementary nitrogenous bases (adenine & thymine, guanine & cytosine), five-carbon sugars (either ribose...

Glycolysis
Glycolysis Glycolysis, the Universal Process | Nine reactions, each catalyzed by a specific enzyme, makeup the process we call glycolysis. ALL organisms have glycolysis occurring in their cytoplasm. At steps 1 and 3 ATP is converted into ADP, inputting energy into the reaction as well as attaching a phosphate to the glucose. At steps 6 and 9 ADP is converted into the higher energy ATP. At step 5 NAD+ is converted into NADH + H+. The process works on glucose, a 6-C, until step 4 splits the 6-C in...

Structure Of Dna
Structure Of Dna The ?Thread of Life?, is deoxyribonucleic acid, also known as DNA. This molecule which is the bases of life, is spiral shaped and found in the nucleus of cells. DNA has the genetic code for bodies, controls development of embryo's, and is able to repair damage caused to itself. All DNA molecules have linked units called nucleotides. These nucleotides have sub-units that have 5 carbon sugars that are called deoxyribose. DNA is composed of four bases called adenine, thymine, guani...

71755452120Structure of a DNA
71755452120Structure of a DNA BASE PAIRING RULE Purine bases bond to pyrimidine bases. This happens because the shapes of purine and pyrimidine bases allow hydrogen bonds to form between the two. The base pairing rule states that adenine pairs only with thymine and guanine pairs only with cytosine. Two hydrogen bonds form between an adenine and thymine base pair, whereas three hydrogen bonds form between a guanine and cytosine base pair. The chemical structure of a nucleotide. A single nucleoti...

The Bay Of Pigs Invasion. The Story Of The Failed Invasion Of Cuba At
The Bay of Pigs Invasion. The story of the failed invasion of Cuba at the Bay of Pigs is one of mismanagement, overconfidence, and lack of security. The blame for the failure of the operation falls directly in the lap of the Central Intelligence Agency and a young president and his advisors. The fall out from the invasion caused a rise in tension between the two great superpowers and ironically 34 years after the event, the person that the invasion meant to topple, Fidel Castro, is still in pow...

Bay Of Pigs Invasion
Bay Of Pigs Invasion The Bay of Pigs Invasion. The story of the failed invasion of Cuba at the Bay of Pigs is one of mismanagement, overconfidence, and lack of security. The blame for the failure of the operation falls directly in the lap of the Central Intelligence Agency and a young president and his advisors. The fall out from the invasion caused a rise in tension between the two great superpowers and ironically, years after the event, the person that the invasion meant to topple, Fidel Castr...

The Role Of Bobby Kennedy Throughout The Cuban Missile Crisis
The Role Of Bobby Kennedy Throughout The Cuban Missile Crisis Introduction On the morning of Tuesday October 16, 1962, President John F. Kennedy was reading the Tuesday morning newspapers in his bed at the Whitehouse. Not twenty fours hours before, McGeorge Bundy, Kennedy's national security adviser, received the results of Major Richard S. Heyser's U-2 mission over San Cristobal Cuba. In light of recent mysterious Soviet and Cuban activities developing in the Caribbean Sea and Atlantic Ocean, t...

The Bay Of Pigs Invasion
The Bay of Pigs Invasion The story of the failed invasion of Cuba at the Bay of Pigs is one of mismanagement, overconfidence, and lack of security. The blame for the failure of the operation falls directly in the lap of the Central Intelligence Agency and a young president and his advisors. The fall out from the invasion caused a rise in tension between the two great superpowers and ironically 34 years after the event, the person that the invasion meant to topple, Fidel Castro, is still in power...

The Bay Of Pigs Invasion.
The Bay of Pigs Invasion. The story of the failed invasion of Cuba at the Bay of Pigs is one of mismanagement, overconfidence, and lack of security. The blame for the failure of the operation falls directly in the lap of the Central Intelligence Agency and a young president and his advisors. The fall out from the invasion caused a rise in tension between the two great superpowers and ironically 34 years after the event, the person that the invasion meant to topple, Fidel Castro, is still in powe...

Cuban Missile Crisis
Cuban Missile Crisis John F. Kennedy's greatest triumph as President of the United States came in 1962, as the world's two largest superpowers, the Soviet Union and the United States, edged closer and closer to nuclear war. The Soviet premier of Russia was caught arming Fidel Castro with nuclear weapons. The confrontation left the world in fear for thirteen long days, with the life of the world on the line. In 1962, Nikita Khrushchev, Premier of the Soviet Union, employed a daring gambit. He se...

Earth Planet
Earth Planet The Earth, man's home, is a planet. The Earth has special characteristics, and these are important to man. It is the only planet known to have the right temperature and the right atmosphere to support the kind of environments and natural resources in which plants and man and other animals can survive. This fact is so important to man that he has developed a special science called ecology, which deals with the dependence of all living things will continue to survive on the planet. M...

The Story Of The Failed Invasion Of Cuba At The Bay Of Pigs Is
The story of the failed invasion of Cuba at the Bay of Pigs is one of mismanagement, overconfidence, and lack of security. The blame for the failure of the operation falls directly in the lap of the Central Intelligence Agency and a young president and his advisors. The fall out from the invasion caused a rise in tension between the two great superpowers and ironically 34 years after the event, the person that the invasion meant to topple, Fidel Castro, is still in power. To understand the origi...

Many Agree That The Cuban Missile Crisis Was The Closest The World Eve
Many agree that the Cuban Missile Crisis was the closest the world ever came to nuclear war; but exactly how close did it come? The Crisis was ultimately a showdown between the United States and the Soviet Union from October 16 to October 28, 1962. During those thirteen stressful days, the world's two biggest superpowers stood on the brink of a nuclear catastrophe. The Crisis started as a result of both the Soviet Union's fear of losing the arms race, and Cuba's fear of US invasion. The Soviet P...

Cuban Missile Crisis
Cuban Missile Crisis John F. Kennedy's greatest triumph as President of the United States came in 1962, as the world's two largest superpowers, the Soviet Union and the United States, edged closer and closer to nuclear war. The Soviet premier of Russia was caught arming Fidel Castro with nuclear weapons. The confrontation left the world in fear for thirteen long days, with the life of the world on the line. In 1962, Nikita Khrushchev, Premier of the Soviet Union, employed a daring gambit. He sec...

The Bay Of Pigs
The Bay Of Pigs The Bay of Pigs Invasion. The story of the failed invasion of Cuba at the Bay of Pigs is one of mismanagement, overconfidence, and lack of security. The blame for the failure of the operation falls directly in the lap of the Central Intelligence Agency and a young president and his advisors. The fall out from the invasion caused a rise in tension between the two great superpowers and ironically 34 years after the event, the person that the invasion meant to topple, Fidel Castro, ...

The Bay Of Pigs Invasion.
The Bay Of Pigs Invasion. The story of the failed invasion of Cuba at the Bay of Pigs is one of mismanagement, overconfidence, and lack of security. The blame for the failure of the operation falls directly in the lap of the Central Intelligence Agency and a young president and his advisors. The fall out from the invasion caused a rise in tension between the two great superpowers and ironically 34 years after the event, the person that the invasion meant to topple, Fidel Castro, is still in powe...

Earth
Earth EARTH The Earth, man's home, is a planet. The Earth has special characteristics, and these are important to man. It is the only planet known to have the right temperature and the right atmosphere to support the kind of environments and natural resources in which plants and man and other animals can survive. This fact is so important to man that he has developed a special science called ecology, which deals with the dependence of all living things will continue to survive on the planet. Man...

Naval Aviation
Naval Aviation Throughout the history of Naval Aviation, one can see a growing force. As new technology and innovations arose and advanced, Naval Aviation improved as well. In times of war and peace, through training and dedication, naval aviators improved their abilities and tactics to produce the fighting force it is today. If by chance, the revolt of the admirals had failed, the United States Military would not be what it is today and the Navy could not have the liberty of enjoying the Maha...

The Role Of Bobby Kennedy Throughout The Cuban Missile Crisis
The Role Of Bobby Kennedy Throughout The Cuban Missile Crisis Introduction On the morning of Tuesday October 16, 1962, President John F. Kennedy was reading the Tuesday morning newspapers in his bed at the Whitehouse. Not twenty fours hours before, McGeorge Bundy, Kennedys national security adviser, received the results of Major Richard S. Heysers U-2 mission over San Cristobal Cuba. In light of recent mysterious Soviet and Cuban activities developing in the Caribbean Sea and Atlantic Ocean, t...

Ethical Issues In U.S. Immigration Policies
Ethical Issues In U.S. Immigration Policies The sun seems unrelenting as it beats down on the two families huddled together in a rickety makeshift boat. The rafters have been floating in the open sea for what seems to them like years. Their food and water supplies have run out and the littlest ones cry out of hunger. But the keep going. Because they know that once their feet touch the land of opportunity their prayers will be answered. Finally, their raft makes it to the ankle-deep waters and th...

Colonial Exchange During The Age Of Discovery The Voyages Of The Iberi
Colonial Exchange during the Age of Discovery The voyages of the Iberians marked history. The discovery of the new world meant the unification of two old worlds. These old worlds had different beliefs, attitudes, language, and values. The culture of these two worlds would never be the same. The native peoples of America at the end of the fifteenth century ranged from the simplest hunting-fishing-gathering societies to highly developed civilizations with urban and peasant components. In spite of ...