Biology Essays Examples For College & High School Students in PDF

10822 total results

A Description of Pheromones and Its Effects in the Chemical Human Attraction (1078 words, 3 pages)

There are many theories, opinions and misconceptions that surround the idea of chemical human attraction. It is widely believed that we as humans have an initial attraction to one and other based on physical features by way of sight and touch. It is even defined in the Merriam Webster dictionary ... Read More

Using Biochemical Test to Determine an Unknown Bacteria (2317 words, 11 pages)

Using Biochemical Test to Determine and Unknown BacteriaAbstractThe goal of this experiment was to use biochemical testing to determine and unknown bacteria based of the results of the testing of known bacteria. By completing 13 different tests I was able to determine my assigned unknown bacteria as the bacteria Serratia ... Read More

An Analysis of Longtitudinal Evolutionary (3295 words, 21 pages)

AbstractIt is widely theorized that, throughout the longitudinal evolutionary history as hunter-gatherers, the human species developed sophisticated mechanisms of animal detection. One of these mechanisms geared towards animal detection is so called kin recognition, by which various species of animals, including the human species, respond more quickly and adroitly to ... Read More

E.Coli Growth at Different Temperatures (843 words, 6 pages)

E. Coli Growth at Different TemperaturesAbstractThe goal of this experiment was the generate growth curves for two different bacteria at two different temperatures and determine their growth rates. This was done through taking samples of bacteria stored at different temperatures and taking bacteria concentration measurement from a spectrometer. This showed ... Read More

An Introduction to the Issue of Bacillus Anthracis (1186 words, 6 pages)

Bacillus anthracis, or anthrax, has many properties that make itextremely useful as an instrument of bioterrorism. Anthrax is a virulentbacteria. The virulence of a specific strain of anthrax can be measured bystudying two specific extrachromosomal DNA rings, hereafter referred to asplasmids, known as pXO1 and pXO2. The plasmid pXO2 contains ... Read More

An Introduction to the Issue of Anthrax as Used in Bioterrorism (424 words, 2 pages)

ANTHRAX AS USED IN BIOTERRORISMI. Bacillus anthracis has many properties that make it useful as an agentin bioterrorism. By understanding the properties and employment of anthraxin bioterrorism, a swift and accurate diagnosis can be made. A. By understanding a chemical and biological analysis of anthrax, we are able to better ... Read More

An Analysis of Respiratory Syncytial Virus (967 words, 5 pages)

Respiratory Syncytial VirusRespiratory syncytial virus (RSV) is a common cause of many types of infections of the respiratory system in infants. In children and adults, RSV can cause mostly upper respiratory symptoms like colds, but it can also cause a serious infection within the lungs causing pneumonia or bronchiolitis. It ... Read More

An Exploration of the Different Effects of Different Color Lights on Plant Processes (1584 words, 7 pages)

Six published articles were referenced concerning results of different light quality on plant growth and development. These articles explore the different effects of different color lights on plant processes. The colors mentioned are green, red, white, and blue. They all affect different parts of the plants processes and growth. While ... Read More

A History and Organization of Hydroponics (533 words, 2 pages)

History and Organization of Hydroponics Hydroponics is a method of growing plants through the use of mineralnutrient solutions dissolved in water, without soil. Instead, a medium maybe used such as gravel, perlite, or rock wool to keep the roots of theterrestrial plants in place. Prior to written history, soilless culture ... Read More

An Analysis of the Human Genome Project (988 words, 4 pages)

The Human Genome Project The human genome task is an overall exploration exertion with the objective of examining the structure of human DNA and deciding the area of the assessed 100,000 human qualities. The DNA of an arrangement of model creatures is concentrated on to give the data important to ... Read More

Genetically Modified Organisms, Intellectual Property Rights, and the Plant Variety Protection Act of 1970 (3328 words, 15 pages)

Genetically Modified Organisms, Intellectual Property Rights, and the Plant Variety Protection Act of 1970Description of the IssueThe issue that the Plant Variety Protection Act of 1970 (PVPA) is intended to address is that of intellectual property rights concerning genetically modified organisms. Prior to 1930, when the first legislation in the ... Read More

An Overview of the Lymphatic System and Its Role and Importance to the Human Body (811 words, 4 pages)

You may not know it, but your immune system is enormous. Its second in size only to your liver. However, it is all throughout your body so you are only slightly aware of it (Clark, 2008).The lymphatic system, which is a part of the circulatory system, has a number of ... Read More

An Analysis of the Genetic Inheritance Patterns Observed in Dihybrid Progeny of Sepia-Type and Apterous Mated Drosophilia Melanogaster (3507 words, 17 pages)

Genetic Inheritance Patterns Observed in Dihybrid Progeny of Sepia-Type and Apterous Mated Drosophila melanogasterAbstract This study was done to identify whether certain physical traits of Drosophila melanogaster followed the rules of Mendelian Inheritance. The phenotypes studied were sepia colored eyes and apterism. This was done by crossing pure breeding male ... Read More

The Effects of Nitrates on the Abundance of the Comal Spring Rifle Beetles (1857 words, 8 pages)

The effect of nitrates on the abundance of the Comal Springs Riffle Beetle AbstractThe Comal Springs Riffle Beetle IntroductionThis ecological study describes how nitrates affect the abundance of the Comal Springs Riffle Beetle (Heterelmis comalensis). Nitrates are always good in an ecosystem. They provide plants with nutrients and are a ... Read More

A Comparison of the Similarities of Humans and Animals (849 words, 3 pages)

Have you ever noticed how much your pet actually understands? Well I have done some research, and I have noticed many similarities between us, Homo sapiens and animals, Animalia. Some of my findings were when you speak to them they have a sense of understanding. Meaning if you tell them ... Read More

Natural Selection and the Theory of the Evolution of Living Things on Earth (1009 words, 5 pages)

Prior to 1800s naturalists and philosophers were generally satisfied the idea that life on earth was fixed and that all living species have not changed over time. In the early 1800s a French naturalist Jean Baptiste de Lemarck observed differences between living species and fossils. Lemarck proposed that evolution in ... Read More

A Discussion of the Importance of the Fetal Tissue Research (1995 words, 8 pages)

Fetal Tissue Research The utilization of fetal tissue in biomedical research has beeninteresting issues for civil argument in social and political gatheringsever since the milestone choice in the 1973 instance of Roe versus Wade(Rdei, 2008). The choice of the Supreme Court to give women the privilegeto end a baby prematurely ... Read More

Understanding the Discrete Messages of Life (1296 words, 4 pages)

There are subtle patterns of life that go unnoticed, and which defy our normal perceptions of logic, cause and effect, and space and time. Understanding these hidden patterns not only enables us to see the world in a different way but gives us the insight to perceive the truths that ... Read More

An Analysis of the Impacts of Temporal and Behavioral Isolation on the Speciation of Drosophilia (1480 words, 8 pages)

The Impacts of Temporal and Behavioral Isolation on the Speciation of Drosophila melanogaster and Drosophila willistoniABSTRACTAlthough a group of species may be part of the same genus or share a very high proportion of genes, the association does not necessarily mean that the species mate andor are capable of mate. ... Read More

An Analysis of the Topic of the Positive Association Between Flock Size and Foraging Behavior in Turdus Migratorius (1294 words, 7 pages)

The Positive Association between Flock Size and Foraging Behavior in Turdus migratoriusABSTRACTIn North America, American robins (Turdus migratorious) can be seen in most locations with woodlands and open areas. Undoubtedly, foraging behavior is a vital key to the high success in the proliferation of American robins. Robins who forage in ... Read More

An Analysis of the Effect of Gibberellin on Varieties of Pea Plants (1493 words, 5 pages)

The Effect of Gibberellin on Varieties of Pea PlantsABSTRACTGibberellin (GA) is a plant hormone that has an important effect on plant growth, causing stem elongation. The Le gene encodes for the gibberellin 3beta-hydroxylase, an enzyme in the gibberellin biosynthetic pathway. However, the le allele (a dwarf variety), a mutation of ... Read More

The Effect of Apnea and Temperature on the Bradycardia Reflex on Homo Sapiens (1217 words, 8 pages)

The Effect of Apnea and Temperature on the Bradycardia Reflex on Homo SapiensABSTRACTFor terrestrial, breathing vertebrates, plunging into water abruptly cuts off oxygen supply, forcing vertebrates to quickly perform a series of biological adjustments or risk oxygen deprivation. In order to conserve oxygen and sustain organs that do need oxygen, ... Read More

An Analysis of the Effects of the Color of Light in the Rate of Photosynthesis (1718 words, 4 pages)

AbstractThe purpose of this lab was to find out how the color of light affects the rate of photosynthesis. The color of light was simulated by using different colored filter papers, in which the normal color (the experimental control) was simulated using white filter paper and the variable colors were ... Read More

A Research on the Use of an Sn1 Reaction ti Synthesize Tertiary-Butyl Chloride from Tertiary Alcohol (474 words, 5 pages)

ObjectiveThe goal of the lab was to synthesize tertiary-butyl chloride from tertiary alcohol through an SN1 reaction. TheoryAn SN1 reaction was used to synthesize tertiary-butyl chloride from tertiary alcohol. SN stood for nucleophilic substitution. The 1 indicated that the reaction rate is only dependent on the concentration of one of ... Read More

A Lab Study: PrepatingP-Nitrobromobenzene Through the Reaction Between Bromobenzene and Nitric Acid (1055 words, 5 pages)

ObjectiveThe objective of this lab was to prepare p-nitrobromobenzene through the reaction between bromobenzene and nitric acid, using sulfuric acid as a catalyst.Theory After the bromobenzene was added to the concentrated nitric acid and the concentrated sulfuric acid, the reaction flask had to be kept in temperatures between 50 degrees ... Read More

The Three Ways in Which Cellular Respiration Could Be Measured (816 words, 4 pages)

IntroductionThere are three ways cellular respiration could be measured. Consumption of O2 (How many moles of oxygen are consumed in cellular respiration?)Production of CO2 (How many moles of carbon dioxide are produced by cellular respiration?)Release of energy during cellular respiration.ProblemIn this experiment, the relative volume of O2 consumed by germinating ... Read More

The Preparation of Acetamide Through the Reaction of Ethly Acetate and Ammonia (623 words, 4 pages)

ObjectiveThe purpose of this lab was to prepare acetamide through the reaction of ethyl acetate and ammonia.TheoryAfter the crude acetamide mixture (formed from ethyl acetate and ammonia) was transferred to a 250 mL distilling flask, a gas trap should be set up so that the acid could absorb any escaping ... Read More

The Observation and Definition of Osmosis by Students (842 words, 7 pages)

ObjectiveThe objective of this experiment was to make students observe and define osmosis. Allowing them to the visual representation of how osmosis is affected in general cells, or in our case potato cells, when placed in different concentrated NaCl solutions. As defined in the McGraw Hill Education Biology textbook, Osmosis ... Read More

The Observation and Definition of Hydrolysis (798 words, 6 pages)

ObjectiveThe objective of this experiment was to help students observe and define hydrolysis. Hydrolysis reaction is a chemical reaction that utilizes water to break apart molecules, as stated in the Mcgraw-Hill Biology textbook. (Biology Connect Mcgraw-Hill) In this experiment, we will test out and determine the degree of hydrolysis of ... Read More

An Introduction to Cholesterol (685 words, 2 pages)

The statement what should I eat just to eat good cholesterol is wrong because it should say what should I eat to maintain good cholesterol. Cholesterol is an essential fatty substance found in all of the body's cells and transported throughout the body via the bloodstream. It's either produced by ... Read More

Biology Essay Examples