Biology Essays Examples For College & High School Students in PDF

10822 total results

An Experiment on Growing Fusarium Using Media of Various Carbon Concentrations While Incubated at Various Temperatures (583 words, 5 pages)

IntroductionFusarium is a genus of soil fungi that is pathogenic to numerous economically important plant species. Because the fungi are so geographically widespread, species have been observed to exhibit variations in growth patterns due to environmental conditions.This experiment entails growing Fusarium with media of varying carbon concentrations and with media ... Read More

A Lab Experiment on the Synthesis of Nylon 6,10 (619 words, 4 pages)

Synthesis of Nylon 6,10 Nylon Rope TrickExperimental ProcedureBeaker 1 was filled 1mL sebacoyl chloride and 25mL dichloromethane. Combined in beaker 2 was 1g sodium bicarbonate and 25mL dH20, followed by 1.1g hexamethylenediamine. The aqueous mixture in the beaker 2 was added to the mixture in beaker 1. Tweezers were used ... Read More

An Experiment on the Synthesis of the Mosquito Repellant N,N-Diethyl-Meta-Toluamide (DEET) (424 words, 4 pages)

Experimental ProcedureA separatory funnel was fixed to a ring stand 5mL anhydrous ether and 3mL diethylamine were added to the funnel. Combined in a 50mL Erlenmeyer flask were 0.5g m-toluoyl chloride and 15mL anhydrous ether. The diethylamineether solution in the separatory funnel was added drop-wise to the reaction flask over ... Read More

The Dangers of Introducing Invasive Plant Species into a Community and the Methods of Preventing It (336 words, 2 pages)

An invasive plant is any non-native species whose presence threatens to cause economic or environmental harm, and possible harm to human health (Invasive.org 2009). The management and prevention of plant invasions is a critical concern that must be addressed in order to preserve ecological diversity and success. The introduction of ... Read More

A Lab Experiment on Ionic and Covalent Bonds, Polarity, the Shape and Structures of Molecules (718 words, 3 pages)

Data AnalysisThe data collected in this lab demonstrates the basic ionic and covalent bonds, polarity, the shape of molecules, as well as how to draw their structures.This picture shows the Lewis Dot Structure of one of the simplest molecules, H2O also known as dihydrogen oxide or water. The yellow H ... Read More

A Lab Experiment to Determine the Inherited Traits of Children from Their Parents (789 words, 5 pages)

The modern knowledge of genetics allows scientists to determine thechromosomal make up of individuals, as well as determine the traitsinherited from their parents. A common assumption used to be that a childwas a mix of their mother and father, but this has been proved false byrecent studies. The characteristics of ... Read More

The Characteristics and Management of the Infection of Plant Species Caused by Phytophthora Capsici, a Type of Fungus (491 words, 4 pages)

Phytophthora capsici is a fungus that can infect plant species from more than 15 different families, including crops such as peppers, tomatoes, squash and eggplant. Chile peppers happen to be one of the most susceptible species to P. capsici, expressing a variety of symptoms due to infection. Diseases caused by ... Read More

An Experiment Using the Leaf Abrasion Method to Inoculate Chile Seedlings with a Bacterial Suspension of Xanthomonas (621 words, 4 pages)

IntroductionXanthomonas is a genus of bacteria that is pathogenic to numerous economically important plants such as peppers and tomatoes, as well as several types of citrus trees. Because the bacteria are so geographically widespread, numerous different species and varieties have been documented as disease causing agents of bacterial leaf spot. ... Read More

A Study on the Ability of Biological Control Agents Used to Minimized the Effect of Root Knot Nematodes on Tomatoes (507 words, 2 pages)

Root knot nematodes are plant parasitic organisms that are responsible for causing severe damage to numerous economically important crops, one of which is tomatoes. Currently, there are not effective methods for complete control of root knot nematodes on tomato plants. The journal article Induced resistance in tomato plants against root ... Read More

A Lab Experiment: Extracting Pigments From Spinach Leaves and Performing Thin Layer Chromatography on the Spinach Leaf Extract (872 words, 5 pages)

IntroductionThe objective of this experiment is to extract pigments from spinach leaves and perform Thin Layer Chromatography (TLC) on the spinach leaf extract. We will also determine the best solvent mixture to use to separate the pigments. This experiment is designed to find the most efficient way to separate molecules, ... Read More

History, Use and Description of Chlorella, a Freshwater Microalgae (3884 words, 26 pages)

I. IntroductionHistory and Description of ChlorellaChlorella is a genus of green, freshwater microalgae that was first distinguished as unique in 1890 by a Dutch microbiologist. Although the genus was not identified until the 19th century, it is believed that Chlorella has grown on earth for the past three billion years ... Read More

The Numerous Benefits of Stem Cell Research for Society (601 words, 2 pages)

Hundreds upon thousands of individuals around the world are diagnosed with countless diseases that change their life and slowly break up their body. They are suffering from diseases that currently have no cure or no proper solution. But what if we could regenerate these dead cells to help cope with ... Read More

A Lab Experiment on Organelle in Animal and Plant Cells (850 words, 3 pages)

Data Analysis The first data sheet compares organelle visibility in an onionepidermis. The first drawing is an unstained epidermis and the second is astained epidermis. In the unstained epidermis the only organelles visibleare the cell wall and the plasma membrane because the cell is transparent,nothing else is able to be ... Read More

A Comparison between the Sexual Response Cycles of Men and Women (948 words, 3 pages)

Humans for centuries have experienced the four stages of sexual response, without even knowing it as a scientific fact. A lot of people begin to learn about the cycle before even learning about it, since it is learned from experience, in most cases. Most young people will often refer to ... Read More

Mendel’s Dwarf by Simon Mawer: A New Perspective on Genetics (618 words, 2 pages)

After reading Mendels Dwarf by Simon Mawer, the genetic material discussed throughout the novel presented to me a new perspective on genetics from a scientific point of view. Also, the controversial subject of embryonic selection is presented in a way that ties a connection with readers, again providing a new ... Read More

A Study on the Female’s Ability to Have an Orgasm (1641 words, 5 pages)

Theodosius Dobzhansky said that nothing in biology makes sense except for in the light of evolution. When speaking about evolution we mean to be speaking of the differential perpetuation of genotypes, in the case of humans, this seems to be code for sex, and humans are mostly all for improving ... Read More

An Experiment on Using Different Reagents to Test for Four Macromolecules (1468 words, 8 pages)

AbstractThe purpose of this lab was using different reagents to test for four macromolecules. By using four different reagents and putting some of the unknowns in a hot water bath, it was clear to identify which unknown had which type of macromolecule. By knowing this, the composition of a solvent ... Read More

Evolution Should Be Taught in Schools (389 words, 2 pages)

One of the biggest controversys regarding the separation of church and state is the teaching of evolution in the classroom. A big problem in private schools and even many public schools is that evolution isnt being covered or the teachers do not go in depth enough on the subject. The ... Read More

An Experiment on Brain, Heart Agar and Thioglyollate Broth to Determine the Used Bacteria’s Oxygen Requirements Using 8 Different Bacteria (1805 words, 8 pages)

IntroductionIn week one lab, we took brain heart agar and thioglyollate broth and used them to determine the used bacterias oxygen requirements using 8 different bacteria. We also used 2 TSA plate with 8 different parts to test the oxygen requirements of Clostridiam Sporogenes, E. coil, Micrococcus lateus, B. cereus, ... Read More

An Experiment on S. Simegmatis Broth to Broth Loop Transfer, Serratis Marcenr to Slant, and M. Luteus Steak Plate (1316 words, 7 pages)

IntroductionFor week one, we conducted a S. simegmatis broth to broth loop transfer, Serratis Marcenr to slant, and M. luteus steak plate. We will expect to see bacterial growth in our transfers and in our streak plate. On week two, we did a broth to broth culture using the bacteria, ... Read More

An Experiment on Modelling Diffusion and Osmosis (1441 words, 4 pages)

Diffusion and OsmosisIntroductionIt is important for the cell to have a way to separate the cytoplasm(inside of the cell) from the extra cellular materials (outside of thecell). This is accomplished by the cellular, or plasma, membrane. Theplasma membrane is composed of a phospholipid bilayer with embeddedproteins. Because of the hydrophobic ... Read More

The Characteristics of the Main Macromolecules: Nucleic Acids, Lipids, and Carbohydrates (781 words, 3 pages)

There are 4 main macromolecules that make up life on earth. In the following paragraphs, I will be talking about Nucleic Acids, Lipids, and Carbohydrates.1a. There are 2 structures of Nucleic Acids, which are DNA, or deoxyribonucleic acid, and RNA, or ribonucleic acid. Both of these molecules are composed of ... Read More

An Experiment on the Tendecies of Growth, Number of Leaves, and Biomass of a Plant with and without Competition (633 words, 4 pages)

Introduction Competition plays a large role in the growth of plants and how healthy they grow to be. It determines the height, number of leaves, and biomass of the plant. Plants with more competition tend to grow taller, yet they have less leaves and biomass. In reverse, plants with less ... Read More

A Lab Experiment on the Grignard Reaction to Yield an Alcohol (1086 words, 6 pages)

Academic Integrity Statement Experimental data may be collected with other students in organic chemistry labs. However, I understand that sharing information required for a lab report (including but not limited to word processing or spreadsheet files, calculations, graphs, conclusions and additional problems at the end of the lab report) with ... Read More

An Overview of the Species of Tapeworms (869 words, 4 pages)

Tapeworms are a flatworm that live in the intestines of many animals and humans as well. It becomes easy for animals to contract this worm because they drink from water that is contaminated (3). Humans can get tapeworm infection by just eating meat from infected animals that is not cooked ... Read More

An Examination of the Cause of Blight in Plants, Phytophthora Infestans (1721 words, 6 pages)

Phytophthora infestans began getting researched in the early 1800s in Philadelphia and New York when the first documented case occurred. Due to change in weather patterns and torrential rainfall, the dehiscent sporangia spread to neighboring states. In a matter of two years late blight, which is the disease caused by ... Read More

The Decline of Coral Reefs Around the World, Its Causes, and the Benefits of Coral Reefs to Biotic and Abiotic Organisms (525 words, 2 pages)

In an attempt to let people know the dangers of global warming and the effects of human interference, this article discusses the depletion of coral reefs around the world. The article lists all the ways that coral reefs benefits biotic and abiotic organisms alike. It also explains the several causes ... Read More

An Experiment on Species Diversity and Richness in Stagnant Wetland and Flowing Open Channel (512 words, 5 pages)

IntroductionIn communities it is important that there is enough biodiversity. The simplest form of biodiversity is species diversity, which commemorates species diversity and species richness. The communities of plankton observed were derived from two different locations a stagnant wetland and a flowing open channel. According to Patrick Denny of the ... Read More

An Experiment to Determine If the Observed Data is the Same to the Expected Data Using Chi-Square Test (740 words, 3 pages)

Introduction Grendel Mendel an Austrian monk, set up the foundation for modern genetics. His theories and experiments on garden peas lead to something called Mendelian Genetics. In his studies, he observed the seeds shape, color and flower. By observing these seeds, he realized that the peas self-pollinated over generations and ... Read More

A Report on Transgenerational Epigenetic Inheritance, the Transmittance of Information between Generations of Living Organisms (513 words, 3 pages)

Transgenerational Inheritance SummaryIn this article, it talks about non-DNA sequence. One must first understand that DNA is put together randomly through replication. Phenotypes can be influenced and interact with the environment, however genotype does no. Therefore, some traits are not inherited. This concept is called the Weismann barrier in which ... Read More

Biology Essay Examples