-
Gene Pool Natural Selection
1,169 wordsvolution is the cornerstone of modern biology. It unites all the fields of biology under one theoretical umbrella. It is not a difficult concept, but very few people -- the majority of biologists included -- have a satisfactory grasp of it. One common mistake is believing that species can be arranged on an evolutionary ladder from bacteria through "lower" animals, to "higher" animals and, finally, up to man. Mistakes permeate popular science expositions of evolutionary biology. Mistakes even fil...
Free research essays on topics related to: moths, great chain, evolution, gene pool, natural selection -
Directly Or Indirectly Carbon Dioxide
1,155 wordsAn ecosystem is the complex of living organisms, their physical environment, and all their interrelationships in a particular unit of space. The principles underlying the study of ecosystems are based on the view that all the elements of a life-supporting environment of any size, whether natural or man-made, are parts of an integral network in which each element interacts directly or indirectly with all others and affects the function of the whole. All ecosystems are contained within the largest...
Free research essays on topics related to: carbon dioxide, living organisms, organic matter, food chains, directly or indirectly -
Naturally Occurring Toxic Chemicals
1,952 wordsBased on the article: River Life Through U. S. Broadly Degraded. By William K. Stevens, Jan. 26, 93 Society has been presented with a broad spectrum of cause and effect relationships within the water based ecosystems. Without a conscious effort to rehabilitate our water systems many rivers and lakes are doomed. We have to look after this precious resource. Fortunately many new controls and clean up programs have been Rivers are being devastated due to physical and ecological transformation. This...
Free research essays on topics related to: naturally occurring, ecosystems, broad spectrum, acid rain, toxic chemicals -
Classical Learning Vs Operant
1,633 wordsThere are many different fields of study in psychology. One field of study is the cognitive process of learning. Learning is any relatively permanent change in behavior (or behavior potential) resulting from experience (Baron G- 7). The learning process helps us, all organisms, adapt to changing conditions in our environment and the world around us. Although the effects of learning are very diverse, many psychologists believe that learning occurs in several basic forms. Two of these forms are ca...
Free research essays on topics related to: negative reinforcement, process of learning, unconditioned stimulus, classical conditioning, operant conditioning -
Gram Negative Petri Dishes
1,384 wordsAbstract/Summary: 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 bacteria. We specifically observed gloeocapsa, merismopedia, anabaena, and oscillator. In addition to this we observed the different characteristi...
Free research essays on topics related to: petri dishes, blue green, gram negative, gram positive, cell types -
Human Beings Makes Clear
1,523 wordsLife, it might be argued, is the distinguishing feature of all organisms and may most usefully be thought of as involving various kinds of complex systems of organization providing individual organisms with the ability to make use of those energy sources available to them for both self maintenance and reproduction. Underlying this deceptively persuasive definition, however, lie those persistent traditional problems inherent in the search for an essential, distinctive substance characteristic of ...
Free research essays on topics related to: makes clear, human beings, organisms, ethics, p 205 -
H 2 O Carbon Dioxide
858 wordsThe Process of Photosynthesis (An Informational Process Analysis Paper) OUTLINE INTRODUCTION 1. Photosynthesis and its importance. 2. General background information on the process. 3. Definition of the process. 4. Statement of the thesis. BODY 1. Description with explanation of what hat happens during each step in the process, using time order. CONCLUSION 1. Paraphrase of the thesis. 2. Summary of the main steps in the process. 3. Review and re 0 taxation why the process is important. Abstract ...
Free research essays on topics related to: h 2 o, chemical energy, chemical reactions, calvin cycle, carbon dioxide -
White Blood Cells Average Life Span
4,747 wordsHuman Disease I INTRODUCTION Human Disease, in medicine, any harmful change that interferes with the normal appearance, structure, or function of the body or any of its parts. Since time immemorial, disease has played a role in the history of societies. It has affected-and been affected by-economic conditions, wars, and natural disasters. Indeed, the impact of disease can be far greater than better-known calamities. An epidemic of influenza that swept the globe in 1918 killed between 20 million ...
Free research essays on topics related to: people with aids, 20 th century, average life span, 19 th century, white blood cells -
Genital Herpes Urinary Tract
2,295 wordsSexually Transmitted Diseases (STD) There are now more than twenty disorders recognized as being transmitted primarily by sexual means. The more familiar STDs are AIDS, gonorrhea, syphilis, chlamydia-related infections, genital herpes, candidiasis, nonspecific vaginitis, trichomoniasis, pediculosis, scabies, and urinary tract infections. GONORRHEA One of the most frequently encountered communicable diseases in the U. S. It is caused by the bacterium Neisseria Gonorrihoeae, which is common all ov...
Free research essays on topics related to: sexual intercourse, urinary tract, ping pong, genital herpes, tract infections -
Endoplasmic Reticulum Golgi Apparatus
1,120 wordsDamn Near Everything There Is To Know About Cells: Biology Cell Report There are many parts of a cell, they all have specific duties, and are all needed to continue the life of the cell. Some cells exist as single-celled organisms that perform all of the organisms metabolism within a single cell. Such single-celled organisms are called unicellular. Other organisms are made up of many cells, with their cells specialized to perform distinct metabolic functions. One cell within an organism may be a...
Free research essays on topics related to: endoplasmic reticulum, golgi apparatus, single celled, plasma membrane, cell walls -
Wilmut And Dr Cystic Fibrosis
2,049 wordsThe first thing that must be cleared up is what is cloning, and what is a clone. A clone is an organism derived asexually from a single individual by cuttings, bulbs, tubers, fission, or parthenogenesis reproduction (" Cloning" , 1997). Pathogenesis reproduction is the development of an organism from an unfertilized ovum, seed or spore (" Pathogenesis" , 1997). So cloning, biologically speaking, is any process in which production of a clone is successful. Therefore, the biolo...
Free research essays on topics related to: nuclear transfer, wilmut and dr, cystic fibrosis, identical twins, vitro fertilization -
Short Term Goals Theory Of Evolution
1,604 wordsAccording to Darwin, the theory of natural selection would suggest that every individual seeks only to further their own goals at the expense of all others, as only those individual organisms that win the battle for resources get the chance to reproduce and pass on their genes, creating a new generation of individuals who are good at serving their own interests. Conversely, those who are good at serving the interests of others will not be rewarded, but will instead become extinct as those whom t...
Free research essays on topics related to: taking advantage, genetic material, long term, theory of evolution, short term goals -
Genetically Engineered Foods Genetically Modified Organisms
1,719 wordsEffects of Genetic Engineering on Agriculture By: Nic The Effects of Genetic Engineering on Agriculture Agri biotechnology is the study of making altered agricultural products. Agribusiness is trying to alter the genes of already existing products to try to enhance the bio competitiveness and adaptability of crops by enhancing plant resistance to drought, salinity, disease, pests and herbicides. They are going to try to enhance their growth, productivity, nutrient value, and chemical composition...
Free research essays on topics related to: plant and animal, plants and animals, genetically modified organisms, food and water, genetically engineered foods -
Circle Of Life Genetic Engineering
1,570 wordsGenetic engineering, the transfer of genetic material from one organism to another, is often a hot topic of debate among scientists and the general public alike; yet, what is the controversy behind this ground breaking medical procedure? Although the procedure, in its numerous forms, could greatly benefit society in many ways, the ethics of the whole idea have many concerned. Types of Genetic Engineering There are several types of genetic engineering and they all vary slightly in the technique a...
Free research essays on topics related to: circle of life, genetic engineering, genetic material, gene therapy, shouldn t -
Somatic Cell Therapy Germ Line Therapy
2,334 wordsGenetic Engineering: A leap in to the future or a leap Towards destruction? Science is a creature that continues to evolve at a much higher rate than the beings that gave it birth. The transformation time from tree shrew, to ape, to human far exceeds the time from an analytical engine, to a calculator, to a computer. However, science, in the past, has always remained distant. It has allowed for advances in production, transportation, and even entertainment, but never in history has science be ab...
Free research essays on topics related to: somatic cell therapy, restriction enzymes, germ line therapy, dna strand, genetic engineering -
Human Genome Project Dna Sequences
5,742 wordsLife as we know it is specified by genomes. Every organism possess a genome that contains the biological information needed to construct and maintain a living example of that organism. Most genomes, including those for all cellular lifeforms, are made of DNA (deoxyribonucleic acid) but a few viruses have RNA (ribonucleic acid) genomes. DNA and RNA are polymeric molecules made up of linear, unbranched chains of monomeric substances called nucleotides. Each nucleotide has three parts: a sugar, a p...
Free research essays on topics related to: human genome project, dna sequences, dna molecules, gene expression, dna sequencing -
Hydrothermal Vents Hydrogen Sulfide
580 wordsHydrothermal Vents are considered by scientists to be very unique and complex communities of organisms. The reason for this is due to the fact that unlike most other organisms, Hydrothermal Vents are not powered by the sun s energy. Most organisms on the Earth+s surface depend on plants to produce nutrients from sunlight. This process is called photosynthesis. These communities are unique in that they depend on a different food-making process other than photosynthesis. Bacteria at the vents make...
Free research essays on topics related to: process called, ocean floor, hydrothermal vents, hydrogen sulfide, popular science -
Darwin Theory Theories
4,032 wordsLamarck? s Influence On The Development Of Lamarck? s Influence On The Development Of Darwin? s Theory Of Evolution Lamarck? s Influence on the Development of Darwin? s Theory of Evolution Serebryany, Rostislav Marc Weinstein Lamarck? s Influence on The Development of Darwin? s Theory of Evolution There have been many ideas on the theory of evolution. Some simply take our existence for granted, others prefer to explain all evolution in terms of the bible and the presence of a God. However, there...
Free research essays on topics related to: darwin, influence, darwin theory, natural selection, theories -
Permian Extinction Mass Extinction
6,021 wordsThe End Permian Mass Extinction Introduction Think of a world which existed 290 million years ago. As you look out over the trade in front of you, you think that you are on an alien planet. You see volcanoes spewing ash and lava. Beside them is the ocean which is swarming with many different species of echinoderms, bryozoans and brachiopods. As you look down onto the sea floor you are amazed at the countless number of starfish and urchins. Some animals leave you can t even describe and you have ...
Free research essays on topics related to: carbon dioxide, extinction, mass extinction, permian extinction, oceanic crust -
Struggle For Existence Survival Of The Fittest
1,320 wordsCharles Darwin felt strongly that observations made on large scale explorations such as his voyage on the Beagle showed conclusively that many clearly different organisms, animals as well as plants, were related to one another buy some unknown law. In other words Darwin was trying to prove that evolution existed. However Darwin does outline how a purely natural process of selection could produce similar effects, and thus explain the development of new species without reference to supernatural in...
Free research essays on topics related to: darwin theory, natural selection, struggle for existence, survival of the fittest, charles darwin
Customer center
