Biology Essays Examples For College & High School Students in PDF

10822 total results

The Positive and Negative Feedback in Biological Systems (473 words, 2 pages)

Control of temperature and blood glucoseThe term negative feedback is used when there is a decrease in function that is caused by a reaction. The negative feedback occurs due to the stimulus in which causes a response. The feedback manages to stabilise the system as it often causes the output ... Read More

A Study on the Bone Structure and Functions of the Skeleton (1931 words, 8 pages)

Skeleton Please see labelled diagram attached Examples of long bones are the femur, ulna, tibia, metacarpals and humerus. They provide structure, mobility, strength and they are hard and dense. The long, slightly curved shaft and two epiphyses which are wider than the shaft provide the bone ability to carry out ... Read More

An Overview of the Muscle System of the Human Body (2589 words, 10 pages)

MusclesThere is an eight-part processcode when naming all muscles in the human body. All muscles are named using one or more of the followingShapeSizeOrientation of the muscle fibresAction of the musclesNumber of originsOrigin and insertionFunction Location(Gustrength.com, 2017)ShapeAn example of a muscle named after its shape is the trapezius muscle. The ... Read More

The History, Development and Importance of Microbe Hunting in Microbe Hunters, a Book by Paul de Kruif (830 words, 3 pages)

The book Microbe Hunters by Paul de Kruif, tells the story of the scientists who dared to enter the world of microscopic beings. Some entered on purpose, however, others stumbled upon these beings by accident and turned out discovering great things. Some are greatly recognized, others are not, and nevertheless, ... Read More

An Observation and Analysis of the Aerobic Cellular Respiration Process and the Effects of Temperature Increase on the Rate of O2 Consumption (2001 words, 12 pages)

Objective The purpose of this lab was to observe and analyse the process of Aerobic Cellular Respiration, and the effects that an increase in temperature has on the rate of consumption of O2. The experiment was done same way twice with the exception of a change in temperature. When the ... Read More

An Analysis of Gene Patenting in the DNA of GMOs (665 words, 2 pages)

Chapter 5 DNA, Dollars and Drugs Biotechnology Gene patenting is an exclusive right to a specific gene or technology regarding that gene. Gene patenting has its pros and its cons. Pros, as with any patent, prevent the possibility of stolen work and the thief claiming the work for himself. The ... Read More

An Overview of Speed and Terminal Velocity and the Differences Between the Two Concepts (572 words, 3 pages)

Speed and Terminal VelocityQuestioning what speed is and how it affects ones life, is a common thoughtconcept that our minds cannot seem to fully grasp. A surprising factor would be that time and speed not only affect out time on earth it is constantly surrounding our universe and many more ... Read More

Fume Hood and the Safety it Provides to Prevent Chemical-Related Accidents (1303 words, 7 pages)

IntroductionFume hood is also known as fume closet or fume cupboard. It is a kind of device utilized to offer ventilation. In the process of offering proper ventilation, it restricts the contact to perilous or noxious fumes, dusts or vapors. It sections are quite large and comprises working sections, five ... Read More

The Scientific Research of the Human Growth by Using the Stem Cell Analysis in Biology (268 words, 2 pages)

There is endless potential for scientists to learn about human growth and cell development from studying stem cells. Some believe it is unethical to use stem cells to do research and others believe that it is a way to advance science and technology. One of the biggest cons some may ... Read More

A Laboratory Experiment on Electric Field Lines and the Errors During the Experiment Session (964 words, 7 pages)

The electric field line creates a way of visualizing electric field. It is produced when the oppositely charged electrodes are placed at separate distances. The space in between the electrodes has an electric field, which can be shown by drawing electric field lines with a direction thus they are vector ... Read More

An Explanation of the Force of Gravity Based on a Practical Experiment (660 words, 4 pages)

Introduction Gravity is the force that attracts a body towards the center of theearth a common example of gravity taking place is a falling object. Whentoast slides off a table, it is observed to land jelly side downfrequently. As the toast is falling, it is accelerating, or undergoing achange in ... Read More

A Laboratory Experiment to Acquire 2 Grams of Copper Through the Combination of CuSO4 and Zinc (459 words, 3 pages)

Introductory Paragraph The limiting reactant is a substance that is absorbed when a chemical reaction is complete. The amount of product set is confined by this reagent, since the reaction cant continue without it. The limiting reagent gives the smallest yield of product calculated from the reagents (reactants) available. This ... Read More

An Explanation of Drag and Thrust, Two Forces Moving a Car (979 words, 4 pages)

The force a moving car or a stationary car can be explained through two physic terminologies, which are drag and thrust. Drag is a friction in the form of air resistance in a moving car, against the front of the car. Whereas the thrust force, which is formed from vehicles ... Read More

A Definition of Nuclear Medicine and Technetium-99m and Its Development (1166 words, 8 pages)

Chosen nuclear medicinetechnetium-99mWhat is nuclear medicine?Nuclear medicine is a branch of medical imaging, which allows only a small amount of radioactive material (a radioisotope) encounter the patient, called a radiopharmaceutical. It diagnoses and determines a variety of conditions and diseases. What is technetium-99m?Technetium-99m is a nuclear isomer of technetium 99. ... Read More

A Comparison of the Similarities and Differences Between Mitosis and Meiosis (539 words, 2 pages)

Mitosis and Meiosis CompareContrast EssayMitosis and Meiosis are two different types of cell division in humans and other animals. They have many similarities and a few important differences such as what their goal is and slight differences in the results after dividing. To explain Mitosis and Meiosis basically Mitosis is ... Read More

An Introduction to DNA and Its Role in Population Evolution (1322 words, 7 pages)

DNA is described as a molecule that carries genetic instructions and it is therefore responsible for hereditary functions while forensic science is the scientific art of collecting and analyzing information and evidences. In forensics science, DNA is used as a form of scientific evidence to vindicate evidence on (i) criminal ... Read More

HeLa Cells: The Cell and DNA That Helped Saved Thousands of Human Lives (1052 words, 3 pages)

HeLa cells are grown in laboratories all over the world. These cells have helped develop the polio vaccine, gene mapping, cloning, and many more medical advances. Many people use these cells for various reasons on a day to day basis without knowing the person they came from. The woman was ... Read More

The Characteristics of Planet Mercury (290 words, 2 pages)

Mercury is the smallest planet in the Solar System, even smaller than the biggest moons. It is also the closest planet to the sun. Mercury under-go phases similar to Earths moon, with the cycle taking 116 days. The planet itself cannot only be seen in the morning and at night, ... Read More

The Four Classes of Macromolecules and Their Structure (1275 words, 5 pages)

MacromoleculesIntroductionThere are four classes of macromolecules that constitute all living matter. These are carbohydrates, lipids, proteins, and nucleic acids. While they have different structures and functions, they are all composed of long complex chains of molecules (polymers) made up of simpler, smaller subunits (monomers). This paper discuss and describe the ... Read More

An Experiment to Demonstrate the Selective Absorption by a Cell (2204 words, 8 pages)

Diffusion is the passive movement of particles from areas of high concentration to low. Selectively permeable membranes are membranes that have various proteins and protein channels that allow only a particular set of molecules to pass in and out through said membrane. We placed eggs with dissolved shells into different ... Read More

The Effect of pH on the Antimicrobial Activity of Aqueous Garlic Extract (4035 words, 13 pages)

Effect of pH on the antimicrobial activity of aqueous garlic extractIntroduction Antibiotics are commonly perceived as the ultimate cure for several infectious diseases. They inhibit metabolic processes that occur in bacteria such as cell wall synthesis, ribosome function, translation, transcription etc. Since antimicrobials only affect prokaryotes and eukaryotes, they are ... Read More

The Unsolved Mysterious Disappearances in the Bermuda Triangle (1409 words, 5 pages)

The Deadly TriangleHave you ever heard of the mysterious disappearances in the Devils triangle, the unsolved mystery that leaves many people oblivious as to how it has taken away the lives of countless amounts of humans? Is the legend true and is there something extraordinary truly going on, or is ... Read More

A Report on the Increase of the Depth of the Tillingbourne River With Its Distance (3968 words, 17 pages)

To answer the task question we will go to the River Tillingbourne. The river Tillingbourne is located Surrey and North Dorking in England, the river runs through Friday Street, Abinger Hammer, Gomshall, Shere, Albury, Chilworth and Shalford. The river is 18 kilometres long. The rivers source is in Leith hill ... Read More

A Lab Experiment Examining the Process of Pulmonary Ventilation and the Various Biological Factors That Influence It (1436 words, 9 pages)

AbstractThis lab examines the process of pulmonary ventilation and the various biological factors that have an effect on this process. Spirometry tests were done on a total of three subjects with different biological characteristics. The vital capacities of each subject were predicted using the appropriate equation. For males VC (0.052)H ... Read More

The Significance of the Phonograph in the Development of Music Throughout History (1877 words, 6 pages)

In its present sense, music can take on a variety of forms and can beconnotative with many different types of experiences. One can listen tomusic in their car, on their phone and in their house on a speaker systemor they can listen to it among hundreds or thousands of people ... Read More

A Personal Investigation of the Effect of the Factors that Affect the Rate of Enzyme Catalyzed Reactions (517 words, 4 pages)

The rate of enzyme catalysed reactions can be affected by a number of factors. In this activity, you will personally investigate the effect of one factor listed below on rate of reactionpHEnzyme concentrationSubstrate concentrationClick on the link below and you will be taken to a simulation that will allow you ... Read More

The Observations of Charles Darwin Leading to the Theory of Evolution by Natural Selection (459 words, 2 pages)

How did Darwins observations lead to his theory of evolution by natural selection? What might you learn from Darwin to be an effective researcher?Charles Darwins Evolution by Natural Selection theory suggests that any population can evolve, or change over time (biology.iupui.edu). A change in the genetic components of a population ... Read More

A Laboratory Experiment on the Two Biological Processes of Diffusion and Osmosis (1297 words, 7 pages)

Diffusion and Osmosis Lab ReportIntroductionHomeostasis, the tendency of an organism to maintain a stable, constant environment, is a fundamental characteristic of all living systems. Diffusion and osmosis are two biological processes that promote homeostasis. Diffusion is the ability of a substance to dissipate to equilibrium in a media (Lange 2015). ... Read More

The Bodily Changes in the Different Stages of Human Life (384 words, 2 pages)

Inside The Living BodyThe movie starts off talking about the process of the baby being born which is the start of the human life cycle. It shows all of the struggles and obstacles a baby has to go through in order to survive. For most of the first year, the ... Read More

A Description of the Two Types of Genetic Drift (328 words, 2 pages)

Genetic drift is the adjustment in the number of gene variants, alleles, in a populace as a result of random sampling. Genetic drift decreases variability of genetics in a population by diminishing the size of the population. Genetic drift may cause gene variations to vanish bringing about diminished hereditary variety. ... Read More

Biology Essay Examples