Biology Essays Examples For College & High School Students in PDF

10822 total results

A Research on Enzymes (1724 words, 8 pages)

Research Enzymesexist in all living things. They are composed of polymers of amino acids andare produced in living cells. Each cell contains several hundred enzymes, whichcatalyse a vast number of chemical reactions. Enzymes are known as BiologicalCatalysts as they dramatically increase the rate at which reactions occurwithin living organisms, without ... Read More

Evaluation of Nervous System’s Involvement to Homeostatic Function (1598 words, 7 pages)

pOutline how the nervous system is involved in any one homeostaticfunction. 12 c) Evaluate the involvement of thenervous system in this homeostatic function. 12Homeostasisis involved in keeping the bodys internal environment constant (like thethermostat of a central heating system). Homeostasis keeps the bodystemperature at a certain level (36.5oC) and it ... Read More

A Study of the Rules and Principles That Govern the Moral Value of Human Conduct (1401 words, 7 pages)

Background Ethics The study of the moral value of human conduct and the rules andprinciples that govern it1. Moral values of a certain topic can vary betweendifferent people, this often leads to conflict. This has happened to theGenetically Modified (GM) foods debate. The definition of Genetically modified foods fromthe EC ... Read More

Epidermis: The Cells of the Angiosperm (326 words, 2 pages)

The roots are very important tothe angiosperm as they are the parts of the plant that draw in water andminerals necessary for life. Around the outside of the root is a tough layer ofcells called the epidermis. Some of thecells in the epidermis form into root hairs, which are extensions ... Read More

Analysis and Factors That Affect the Activity of an Enzyme (635 words, 3 pages)

AIM To investigate factors which effect the activity ofan enzyme. INTRODUCTION Enzymes arelarge particles that speed up reactions. Enzymes are usually just used for onereaction. Enzymes have certain needs, which make them work at their best theseneeds consist of the right temperature ,the right pH number, the rightconcentration and the ... Read More

Canada Pursues Extensive Development of Hydroelectric Power (626 words, 4 pages)

Since the 1970s, Canada has pursued extensive development of hydroelectricpower. Hydroelectricity ensures Canada a secure source of energy for itsconsumers. Nearly two-thirds of the homes in the province of Quebec areall-electric, and most of their electricity supply is provided by hydropower.This energy resource allows Canada to generate electricity without greenhousegas ... Read More

An Investigation of the Effect of Substrate Concentrations on the Rate of the Decomposition of Hydrogen Peroxide When Catalyzed by the Enzyme Catalase (4200 words, 18 pages)

For this investigation I havebeen asked to investigate (by experimentation) the effect of substrateconcentrations on the rate of the decomposition of hydrogen peroxide whencatalyzed by the enzyme catalase. This is part of our work on thefunction of enzymes, how they work and the effects of conditions on how theywork. We ... Read More

The Four Possible Relationships Between Real Wages and Unemployment (2930 words, 3 pages)

There are four possible relationships between real wages (RW) and unemployment (U) Firstly, U can be caused by high RW (the "classical" case), secondly high RW can be just a symptom of U rather than its cause, thirdly RW can be simply irrelevant to U and, finally, higher RW may ... Read More

An Analysis of the Topic of the Electron Microscope Invention and History (1036 words, 5 pages)

The diagram below shows a pictureof an electron microscope. This is a type of microscope that makes use of abeam of electrons rather than visible light. Because the wavelength ofelectrons is much smaller than the wavelength of visible light, an electronmicroscope not only gives a high magnification but it also ... Read More

An Experiment to Determine the Oxygen Produced in Relation to the Distance of the Light Source (901 words, 6 pages)

Photosynthesis to find effects of distance of a light source from pond weed has on the amount of oxygen produced Photosynthesis All green plants need to be able to make their own food.They do this by a process called photosynthesis.For photosynthesis to occur they need sunlight energy.This energy is absorbed ... Read More

An Analysis of the Leaves in Photosynthesis (1833 words, 9 pages)

The leaves inthe liquid will rise during photosynthesis, due to the oxygen released.Farmers can uselamps in greenhouses to control some of the environmental factors.The plantgrowers will have to consider a profit-cost balance they need to calculatewhether the cost of new inputs into their plant growth methods, will produce aconsiderable profit. ... Read More

An Experiment to Measure Rate of Photosynthesis with Varying Light Intensity (955 words, 4 pages)

Inthis coursework, I intend to explain the variation (if any) that lightintensity makes to the rate of photosynthesis in a green plant. To do this, Iwill be measuring the rate of photosynthesis of elodea, a Canadian water plant,under different levels of light intensity. Photosynthesis is an organicchemical reaction which green ... Read More

An Analysis of the Experiment, Exploration and Analyse of Human Variation Based on Foot Length and Hand Span (3601 words, 17 pages)

Aim The aim of this investigation was to explore and analysean aspect of human variation.Hypothesis There will be a positivecorrelation between an individuals foot length and their hand span. This may be due to linkage the genesthat create these characteristics may be positioned on the same chromosome sothat they become ... Read More

An Analysis of the Experiment, the Amount of Salt in a Potato Chips Through Osmosis (647 words, 3 pages)

Potato Chips Aim To discover the concentration of salt in a potato chipthrough osmosis. Osmosis is the diffusion of water through selectivelypermeable membrane (which are membranes which allow certain particles to passthrough them and not others)When you place a potato chip in salt solution, then ifthe potato has a higher ... Read More

An Overview of the Experiment, Aspects of Arabidopsis Thaliana in Mouse Species (376 words, 2 pages)

Research Proposal for Aspects of Arabidopsis thaliana Introduction The mouseear cress Arabidopsis thaliana is a member of the Brassicaeae that lendsitself well to genetic study in that it has only a small quantity of DNA. Theplant itself has little commercial value aside from that as a research tool,and it has ... Read More

The Use of Nuclear Weapons as a Way of Maintaining Peace (624 words, 3 pages)

The Spread of Nuclear Weapons More May Be Better Kenneth Waltz, produces an interesting and semicompelling argument for the use of Nuclear weapons as a way of maintaining thepeace. There are however problems with Waltzs argument. One of these can beexplained by the time period in which he made it. ... Read More

An Overview of the Experiment, the Investigation of Triangular Square Numbers (1581 words, 8 pages)

TriangularSquare Numbers Aim The aim of this investigation is to investigate numbersthat are both square and triangular. Part of this investigation will be to tryto find a formula to calculate the nth triangular square number.Initial Analysis Triangular numbers are numbers calculated using theequation Triangular square numbers must satisfy the above ... Read More

An Introduction and an Analysis to Determine Whether Intensity of Light Would Affect the Rate of Photosynthesis in a Plant (2868 words, 4 pages)

The aim of my experiment was to determine whether intensity of light would affect the rate of photosynthesis in a plant. To do this, I placed a piece of Canadian pondweed in varying light intensities, and observed the amount of oxygen being given off. I used Canadian pondweed because of ... Read More

An Overview of the Experiment, Osmosis Occurrence in a Potato (2716 words, 8 pages)

Aim My main aim in this experiment is to find out if osmosis occurs in a potato, and how it affect the potato in different molar solutions of sucrose and water. Apparatus Stop Clock to time our experiment Cutting tile to cut the potato on Knife to cut the potato ... Read More

An Argument in Favor of Legalization of Cloning Because It Would Benefit Society (1349 words, 2 pages)

The practice of cloning can be used to benefit society and therefore should be legalised. Ever since the cloning of the first adult sheep, Dolly, the idea of cloning has become a major issue and the subject of many debates. Many people are afraid of the idea of cloning because ... Read More

An Overview of the Experiment, Analyzing the Fat in Five Different Type of Milk Products (838 words, 3 pages)

I am going to use five different kinds of milk as I think that this is a suitable number to give me a varied amount of fat concentrations. My different milks areType of milkGrams of pat per 100mlWhipping cream38Single cream18Full fat milk3.6Breakfast milk5.2Semi-skimmed milk1.7 They will be kept at room ... Read More

An Analysis of the Genetic Modification of Animals and Plants (983 words, 4 pages)

Since the discovery of DNA in the late 1950s, the possibility of geneticmodification of animals and plants has become a reality. However is the reality ofdesigner babies going to far? The term designer baby refers to the geneticmodification of the child in its early fetal life. The issue has been ... Read More

An Overview of the Experiment, Enzymes and the Effect of Concetration (452 words, 2 pages)

Background Knowledge IntroductionEnzymes are biological catalysts made up from protein. As we know, catalysts are substances that speed up the rate of a reaction without itself being used up. An enzyme has an active site, which has a unique shape into which only a substrate of the exact same unique ... Read More

An Analysis of the Genetic Engineering for the Virus Resistance of the Plants in Agriculture (849 words, 3 pages)

We have now come to a time in history when we know the most we have ever been able to dream about knowing and sometime in our life times we are going to recreate the record books with some of the things we are now capable to do as human ... Read More

A Description of the Tarantula and Arthropods in Biology (1956 words, 3 pages)

The Arthropods, a term for invertebrate animals, such as crustaceans, millipedes and centipedes, insects, and arachnids, constitute the largest phylum in the animal kingdom with more than 900,000 known species found in almost all habitats. Out of this number there are over 30,000 recognised species of spiders throughout the world ... Read More

An Overview of the Experiment, the Water Content of Plants Variation on Environmental Conditions (2442 words, 7 pages)

Scenario Plants in the soil have their roots in a dilute solution of mineral ions. When they are suddenly flooded with seawater, concentration of which is 0.3 molar Sodium Chloride, they are observed to wilt and become flaccid. Aim The aim of this experiment is to investigate the movement of ... Read More

An Introduction to the Evolution of Solar Systme and the Theories of the Origin of the Moon (1574 words, 2 pages)

Evolution of solar system Theories of The Origin of the Moon 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 ... Read More

An Introduction to the Aim of the Science Investigation – the Location of Stomata (2356 words, 6 pages)

AimThe aim of this science investigation is to find out where the stomata are located, on the upper or lower epidermis of a leaf. PredictionMy prediction is that most of the stomata are found on the lower epidermis of a leaf. I have based this prediction on the function of ... Read More

An Overview of the Experiment, Killing a Bacteria With Antibodies (920 words, 4 pages)

The background knowledge that I have in order to carry out this experiment is as followed1.That the bacteria E.coli is a harmful bacterium that infects and causes serious damage to humans, who usually get it from under cooked food.2.That, in order to kill bacteria you need to use antibiotics. Antibiotics ... Read More

An Overview of the Fire Hazards and Combustion (1965 words, 4 pages)

Forest firesThere are hundreds of different types of fires ranging from house fires to bush fires, but as far as a fire being a global hazard it is limited to a few. Firstly the most common, forest fires. These are uncontrolled fires occurring in vegetation more than six feet high. ... Read More

Biology Essay Examples