Biology Essays Examples For College & High School Students in PDF

10822 total results

A Look at the Origin of Mankind and Earth’s Existence (1492 words, 2 pages)

The BeginningTo understandhow the Earth started we need to start off with origins of mankind and the earth's existence. The Earth came into existence about 6 billion years ago and the emergence of homo-sapiens-sapiens 200,000 years ago. Technology has always been closely linked to the way in which people have ... Read More

An Introduction to the Biomedical Engineering (IMBE) (453 words, 1 pages)

A simulated flight environment for pilot training may soon be made more realistic through the use of eye-tracking technology developed by researchers at the University of Toronto's Institute of Biomedical Engineering (IMBE).Many safety and cost benefits are obtained by training aircraft pilots under simulated conditions, but to be effective the ... Read More

A Biography of Werner Heisenberg, a Controversial Physicist (4420 words, 5 pages)

Werner Heisenberg, born in the dawn of the twentieth century became one of its greatest physicists he is also among its most controversial. While still in his early twenties, he was among the handful of bright, young men who created quantum mechanics, the basic physics of the atom, and he ... Read More

An Analysis of the Black Hole in Astronomy (1050 words, 1 pages)

Within our galaxy alone, there are millions upon millions of stars. Within our universe, there are millions upon millions of galaxies. Humans have known the existance of stars since they have had eyes. Although interpretations may have differed on what they were, they were always thought of as white glowing ... Read More

Different Names of the Moon Throughout the History (1565 words, 2 pages)

The Moon is the only natural satellite of Earth. The distance from Earth is about 384,400km with a diameter of 3476km and a mass of 7.351022kg. Through history it has had many names Called Luna by the Romans, Selene and Artemis by the Greeks. And of course, has been known ... Read More

A History of the Roswell Unidentified Flying Object Crash Inciddent in 1947 (1389 words, 2 pages)

The people of the world have always had a mysterious belief that Earth wasn't the only planet in the universe that supported life. This belief dates back to ancient times when heavenly and demonic stories were told of gods who strode across the skies on their golden chariots. Tales as ... Read More

An Introduction to the Appearance Metallic Antimony (246 words, 1 pages)

AppearanceMetallic antimony is an extremely brittle metal of a flaky, crystalline texture. It is bluish white and has a metallic lustre. It is not acted on by air at room temperature, but burns brilliantly when heated with the formation of white fumes. It is a poor conductor of heat and ... Read More

The Five Assumptions of the Kinetic-Molecular Theory of Gases (1515 words, 2 pages)

1. State the five assumptions of the Kinetic-Molecular Theory of gases.a) Gases consist of large numbers of tiny particles. These particles, usually molecules or atoms, typically occupy a volume about 1000 times larger than occupied by the same number of particles in the liquid or solid state. Thus molecules of ... Read More

Niels Bohr’s Model of the Hydrogen Atom (365 words, 1 pages)

Niels Bohr's model of the hydrogen atom, was the primary reason for the understanding of energy levels.Bohr was able to explain the bright line spectrum of hydrogen. Sparked by the recent discovery of the diffraction patterns, scientists believed electrons could be described as waves. Bohr hypothesized that energy is being ... Read More

The Advantage and Disadvantages of Plutonium (2116 words, 3 pages)

Abstract Should we begin to manufacture one of the most destructive and infamous substances on the face on the Earth once again? The engineers say yes, but the public says no. The United States stopped making this element with the ban on manufacturing nuclear weapons. But with the continuing problem ... Read More

The History and Development of Chemical Reactions (2002 words, 3 pages)

Chemical reactions are the heart of chemistry. People have always known that they exist. The Ancient Greeks were the firsts to speculate on the composition of matter. They thought that it was possible that individual particles made up matter. Later, in the Seventeenth Century, a German chemist named Georg Ernst ... Read More

The Effects of Salinity Changes on the Polychaete (1888 words, 2 pages)

I chose to experiment with the effects of salinity changes on the polychaete, Nereis succinea. Along with the other members of the group, Patty and Jeremy, I was curious to see whether the worms would engage in adaptive behavior when placed in a tank of water of foreign salinity, or ... Read More

An Analysis of the Structure of Deoxyribonucleic Acid and the Transfer of Genes (1139 words, 2 pages)

IntroductionDeoxyribonucleic acid is contained in all cells. The structure of DNA makes gene transmission possible. Since genes are segments of DNA, DNA must be able to make exact copies of itself to enable the next generation of cells to receive the same genes. The DNA molecule looks like a twisted ... Read More

An Introduction to the Creative Essay on the Topic of a World That Existed 290 Million Years Ago (5691 words, 7 pages)

IntroductionThink of a world which existed 290 million years ago. As you look out over the terane in front of you, you think that you are on an alien planet. You see volcanoes spewing ash and lava. Beside them is the ocean which is swarming with many different species of ... Read More

The Relationship Between Science and Religion (270 words, 1 pages)

The relationship between Science and Religion can be explained from two distinct points of view. Some would argue that scientific explanations are the only means of explaining our existence, while others would argue that religion and the story of creation found in Genesis I and II provide a sufficient account ... Read More

An Introduction to the Changes in the Altitude and the Effects on the Human Body (3673 words, 5 pages)

Changes in altitude have a profound effect on the human body. The body attempts to maintain a state of homeostasis or balance to ensure the optimal operating environment for its complex chemical systems. Any change from this homeostasis is a change away from the optimal operating environment. The body attempts ... Read More

An Analysis of Evolution as the Natural Process of Genetic Modification (361 words, 1 pages)

Evolution is "an unpredictable and natural process of temporal descent with genetic modification that is affected by natural selection, chance, historical contingencies and changing environments." Humans evolved from apes because of their similarities. This can be shown in the evidence that humans had a decrease in the size of the ... Read More

A Biography of Lorenzo Romano Amedeo, an Italian Scientist (596 words, 1 pages)

A vogadro was born on June 9, 1776 in Turin, Italy. He began his career in 1796 by obtaining a doctorate in law and practicing as a lawyer for three years after. In 1800, he began to take private lessons in mathematics and physics and decided to make the natural ... Read More

An Overview of the Scientific Revolution in the History of Mankind (507 words, 1 pages)

Herbert Butterfield stated that, Since the Scientific Revolution overturned the authority in science not only of the middle ages but of the ancient worldit outshines everything since the rise of Christianity. During the scientific revolution Nicholas Copernicus, Galileo Galilei and Isaac Newton all voiced their opinions that contradicted the views ... Read More

A Biography of Sir Richard Arkwright an Inventor (859 words, 1 pages)

Sir Rich Arkwright was born on December 23, 1732 at Preston in the county of Lancaster. His first profession was a barber in Bolron-le-moors in 1760. Soon afterward he traveled throught the country buying human hair. At that time he had a valuable chemical secret for dying the hair to ... Read More

A Biography and an Analysis of the Work by James Russell, an American Inventor (1104 words, 2 pages)

James Russell was born in Bremerton, Washington in 1931. His first invention, at six years old, was a remote-control battleship with a storage chamber for his lunch. In 1953, he earned his Bachelor of Arts in physics and graduated from Reed College in Portland. Afterwards he went to work as ... Read More

A Study on Global Warming and Its Effects (1152 words, 2 pages)

What is global warming, and how is it affecting the Earth and it's inhabitants? Global Warming is sometimes referred to as the greenhouse effect. The greenhouse effect is the absorption of energy radiated from the Earth's surface by carbon dioxide and other gases in the atmosphere, causing the atmosphere to ... Read More

A Look at the History and Occurrence of Carbon in Nature (1124 words, 2 pages)

I. Introduction A. The History of CarbonII. Occurrences in Nature A. Diamond B. Graphite C. Coal and Charcoal D. Amorphous CarbonIII. Carbon Compounds A. Inorganic B. OrganicIV. The Carbon CycleV. ConclusionCarbon, an element discovered before history itself, is one of the most abundant elements in the universe. It can be ... Read More

An Introduction to the Analysis of the CFC Chlorofluorocarbons (1022 words, 2 pages)

The beginning of the CFC(chlorofluorocarbons) era started in 1928, when CFC' were invented by a Du Pont chemist. CFC' were best known as "freons" and became famous as a safe, nonflammable refrigerant. It's invention became a great triumph when Freon took the place of sulfur dioxide or ammonia which was ... Read More

An Analysis of Rare Electrophoretic Variants of Red Cell Catalase Identified by Baur (1729 words, 3 pages)

Several rare electrophoretic variants of red cell catalase were identified by Baur (1963). Nance et al. (1968) also described electrophoretic variants. Data on gene frequencies of allelic variants were tabulated by Roychoudhury and Nei (1988).Wieacker et al. (1980) assigned a gene for catalase to 11p by study of man-mouse cell ... Read More

An Analysis of the Atomic Nature of Matter (1207 words, 2 pages)

IntroductionOrdinary matter has negatively charged electrons circling a positively charged nuclei. Anti-matter has positively charged electrons - positrons - orbiting a nuclei with a negative charge - anti-protons. Only anti-protons and positrons are able to be produced at this time, but scientists in Switzerland have begun a series of experiments ... Read More

A Look at the Explanation of the Formation of Universe Through the Big Bang Theory (1280 words, 2 pages)

It is always a mystery about how the universe began, whether if and when it will end. Astronomers construct hypotheses called cosmological models that try to find the answer. There are two types of models Big Bang and Steady State. However, through many observational evidences, the Big Bang theory can ... Read More

An Analysis of Philip Ball’s “Designing the Molecular World” (2128 words, 3 pages)

"Approaching the end of Apollo, my frustration often surfaced. No one in America seemed to care that we were giving up, surrendering the future of the next generation of young people with stars in their eyes.... How I wished John F. Kennedy were still alive, challenging us to dare and ... Read More

An Experiment to Determine the Gas Hydrogen by Generating Gas Through a Chemical Change (676 words, 2 pages)

BackgroundAn example of a gas would be hydrogen. A chemical property is how a substance changes its identity. An example of this would be being able to support flammability. A physical property distinguises one type of matter from another and can be observed without changing its identity. An example of ... Read More

The Early Life, Education and Achievements of Galileo Galilei (425 words, 1 pages)

Galileo was born in the city of Pisa, on the day Michelangelo died. His parents determined the first, significant, event in his life. At the age of seventeen he was sent to the University of Pisa to study medicine. It is reported that Galileo's interest in science and mathematics was ... Read More

Biology Essay Examples