Biology Essays Examples For College & High School Students in PDF

10822 total results

AN Insight to the Origins of Physics and Early Applications of Physics in Examining the Surroundings (1314 words, 2 pages)

Physics began when man first started to study his surroundings. Early applications of physics include the invention of the wheel and of primitive weapons. The people who built Stone Henge had knowledge of physical mechanics in order to move the rocks and place them on top of each other. It ... Read More

The Theory of Evolution and Creation (685 words, 3 pages)

How was the earth created? This is a question that has puzzled humans for ages. There are two main theories that explain how the earth was formed. These are the theories of evolution and creation. The creation theory is divided into various groups. The most accepted creation theory is the ... Read More

An Essay on Solar Energy: An Alternative Source of Energy (652 words, 2 pages)

All life on Earth depends on energy from the sun. Solar energy is the source of energy for photosynthesis. It provides the warmth necessary for plants and animals to survive. The heat from the sun causes water on the Earth's surface to evaporate and form clouds that eventually provide fresh ... Read More

A Study of Calcium Transport of SF-9 Lepidopteran Cells in Bull Frogs (2915 words, 9 pages)

Calcium transport study of SF-9 lepidopteran cells and bull frog sympathetic ganglion cellsABSTRACT The intracellular calcium level and the calcium efflux of the bull-frog sympathetic ganglion cells (BSG) and the SF-9 lepidopteran ovarian cells were investigated using a calcium-sensitive fluorescence probe fura-2. It was found that the intracellular calcium levels ... Read More

The Areas of Concern in Genetic Engineering (632 words, 2 pages)

Two years ago, genetically engineered bacteria, which unexpectently killed beneficial soil fungi, escaped into sewers through human error and have become toxic to plants and survived when expected not to.3 These are the sorts of consequences that come with playing God. DNA (deoxyribonucleic acid) - the chemical compound that makes ... Read More

An Analysis of Chlorofluorocarbons (CFC) Era in 1928 (1023 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 the Flatulence Types (1151 words, 2 pages)

Why cant a weapon be developed upon the flatulence of man. Why do people continue to spray air freshener in the toilet despite making it worse? Nobody knows. It may just well be the nature of man.Males, when it comes to flatulence would undoubtedly be the dominant species between the ... Read More

An Experiment Determining the Effect of Acids and Bases on Different Indicators and the pH of Common Cleaning Agents (1845 words, 8 pages)

Experiments to Determine the Effect of Acids Bases on Different Indicators and the pH of Common Cleaning AgentsThe aim of the first set of experiments is to find out and record the colour changes that are observed after a certain indicator is mixed with acids and bases to form a ... Read More

Regular Physical Activity Is an Important Part of Effective Weight Loss and Weight Maintenance (2113 words, 10 pages)

Regular physical activity is an important part of effective weight loss and weight maintenance. It alsocan help prevent several diseases and improve your overall health. It does not matter what type ofphysical activity you perform--sports, planned exercise, household chores, yard work, or work-relatedtasks--all are beneficial. Studies show that even the ... Read More

The Importance and Functions of the Central Nervous System (CNS) (1336 words, 7 pages)

The ability to regenerate the tissues of the human central nervous system(CNS) is one of the greatest projects undertaken by biomedical engineerstoday. With this eventual technology, permanent paralysis and blindnessdue to CNS injury will be a thing of the past. Central nervous systeminjuries will be repairable, an idea that was, ... Read More

An In-depth Look at the Inflammation of the Bronchi, Bronchitis (837 words, 5 pages)

Definition Bronchitis is the inflammation of the bronchi. It may developsuddenly, following a head cold (acute bronchitis), or it may persist orreturn regularly for many years, causing progressive degeneration of thebronchi and lungs (chronic bronchitis). Certain people are more susceptiblethan others Men are more of a target to bronchitis than ... Read More

An Overview of the Experiments to Determine the Effects of Air Pressure in a Given Environment at Various Temperatures (1265 words, 4 pages)

DESCRIPTION My project consists of a series experiments to determine the effect of air pressure in a given environment at various temperatures. The experiments I chose to conduct are1) Heat an ordinary pop can on a hot plate and then putting the can upside down in cold water to see ... Read More

The Cause of the El Nino and the Many Biological Changes That Occurs (2299 words, 4 pages)

El Nino has been a reoccurring phenomenon for centuries. Man has only started to realize how much of the worlds weather is effected by it. The term El Nino refers to an irregular warming of the seas surface. During the last 40 years there have been 10 significant El Nino ... Read More

The Components and Functions of the RNA and DNA (1144 words, 5 pages)

Deoxyribonucleic acid is contained in all cells. The structure of DNA makes gene transmissionpossible. Since genes are segments of DNA, DNA must be able to make exact copies of itself to enable thenext generation of cells to receive the same genes. The DNA molecule looks like a twisted ladder. Each"side" ... Read More

The Description of the Electron Microscope and How It Works (852 words, 2 pages)

The electron microscope has become one of the most widely utilized instruments for materials characterization. An electron microscope is a scientific instrument that allows us to see objects so small that they cannot be seen in any other way. (CITE) Electron microscopes have allowed scientists to see individual molecules and ... Read More

The Destructive Power of the Atomic Bomb (2095 words, 9 pages)

Ever since the dawn of time man has found new ways of killing each other. Themost destructive way of killing people known to man would have to be the atomic bomb. The reason why the atomic bomb is so destructive is that when it is detonated, it hasmore than one ... Read More

A Look at Alternative Energy Source, the Solar Energy (718 words, 1 pages)

What does it cost to turn on a light switch, run the TV all day, or take a long hot shower? How many hours a day, week, or year do we have to work just to pay for the gas in our cars, air conditioning and heating in our homes, ... Read More

A Literature Review of Lambert Titus Parker’s “Your Bones in Space” (1422 words, 5 pages)

Osteoporosis a condition characterized by an absolute decrease in the amount of bone present to a level below which it is capable of maintaining the structural integrity of the skeleton. To state the obvious, Human beings have evolved under Earth's gravity "1G". Our musculoskeletal system has developed to help us ... Read More

A Look at Leo Kass’ Three Classifications of the Benefits of Cloning (1589 words, 2 pages)

As scientists continue to piece together nature's mysteries of science, and as technology is becoming the dominating force in numerous areas worldwide, there is often a crucial piece of the puzzle that goes missing responsibility. Though many people praise the abundant benefits of modern technology, few actually understand the principles ... Read More

How Refractory Materials Are Made (2334 words, 6 pages)

IntroductionFirst we will start with the definition of refractories and ceramics. Refractories and ceramics are non-metallic materials capable of maintaining physical and chemical stability at high temperatures. Refractories in modern practice are usually ceramic in nature, and are used in a wide variety of primary, secondary and tertiary industries. Wherever ... Read More

An Outline of the Life History of Sir Richard Arkwright (248 words, 1 pages)

Sir Rachard Arkwright Lived 1732-1792. He was born in the English seaport town of Preston in Landcashire. He was one of 7 children in his family. When he was ten, he became an apprentice at a barbers shop. While he was there, he discovered a way of dying hair so ... Read More

The Invention and Development of Printing Press Before the Middle Ages (340 words, 1 pages)

Books were read by only a handful of people before the Middle Ages. Ancient texts dating back to Greek times were held in monasteries, where roomfuls of scribes sat laboriously copying them out by hand to keep them preserved. So of course everyone was waiting for the printing press. It ... Read More

A Biography of Nicolaus Copernicus a Proponent of the Theory That Sun and Not the Earth is at Rest in the Center of the Universe (275 words, 1 pages)

Nicolaus Copernicus was born February 19, 1473 in Torun, Poland. Copernicus was a proponent of the theory that the Sun, and not the Earth, is at rest in the center of the Universe. Copernicus received his education, first at the University of Krakow, and then at various universities in Italy. ... Read More

The Biological Description of Proteins and Its Function (980 words, 2 pages)

Proteins are the macromolecules of life. Discovered in 1838, proteins are recognized as a large number of superior organic compounds that make up living organisms and are essential to their functioning. The term protein comes from the Greek word proteies or primary. Proteins have many different properties and function in ... Read More

A Biological Overview of the Three Specific Types of Bacteria (1343 words, 3 pages)

AbstractSummary Changing our focus from the properties and functions that take place within the cell to the actual cell itself, we observed three specific bacterial types within this lab Gram-positive bacteria, Gram-negative bacteria, and cyanobacteria. We closely observed the features of cyanobacteria and were able to differentiate them from other ... Read More

Importance of the Research on the Human Genome and the Resulting Applications in Improving the Health (2093 words, 3 pages)

"research on the human genome and the resulting applications open up vast prospects for progress in improving the health of individuals and of humankind as a wholesuch research should fully respect human dignity, freedom and human rights, as well as the prohibition of all forms of discrimination based on genetic ... Read More

A Simple Procedure to Find out the Osmotic Properties of a Potato (2244 words, 8 pages)

Section P Planning a simple procedure In this experiment I will be trying to find out the osmotic properties of a potato. To do this I will cut out several pieces of potato to the same length and then place them in different molarities of sugar solution. Fill some test ... Read More

An Examination of the Concentration Effects of the Rate of Reaction Between CaCO3 & HCI (2305 words, 8 pages)

Aim factor (1)My aim for this experiment is to find out if the concentration effects the rate of reaction between CaCO3 HCl.Prediction factor (1)My prediction is that if the concentration of the acid increases there will be an increase in the rate of reaction for example the highest concentration will ... Read More

How Enzymes Work in the Human Body (2885 words, 5 pages)

Hypothesis Hydrogen peroxide will breakdown to oxygen and water in the presence of Catalase. The reaction will increase with increasing enzyme concentration when molecules of hydrogen peroxide are freely available. However, when molecules of the substrate are in short supply, the increase in rate of reaction is limited and will ... Read More

An Analysis of the Benefits and Dangers of LSD (3010 words, 6 pages)

Embarking on an Acid Trip Analysis of the benefits and dangers of LSDHP200AbstractA thorough analysis of the hallucinogenic drug lysergic acid diethylamide (LSD-25) and its effect on humans are given. The various uses of the drug are also examined throughout several decades, beginning with its first synthesis in 1938 as ... Read More

Biology Essay Examples