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Free research papers and essays on topics related to: biology

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  • Bibliography: This Is My First Biology Paper My Major Is Psychology I Attend An University In Maryland Parttime I Am A Colleg - 1,764 words
    Bibliography: This is my first Biology paper. My major is Psychology. I attend an university in Maryland part-time. I am a college Sophomore. I work in Communications. UNDERSTANDING THE AIDS VIRUS Will I live to see tomorrow? Is there a hope for the future? These are probably the most commonly asked questions among AIDS patients today. This paper delves into the heart of the AIDS topic by giving a detailed definition of the virus, risk factors associated with transmission, and the best treatment methods studied by the Centers for Disease Control, the National Institutes of Health, and other research organizations. AIDS. The word alone strikes fear into every sexually active individual. Why i ...
    Related: attend, biology, maryland, psychology, san francisco
  • Biology And Human Evolution - 1,381 words
    Biology And Human Evolution Human Biology and Evolution Humans are Alive The earliest human life form can be traced back more than 3.5 billion years ago. Humans are said to be descendants of a single celled ancestor. Although they are different in size and shape all basic functions are alike. The more complex the organization of the cell became the more successful and developed it became. As these single celled organisms developed they became known as pre-humans. We share many characteristics with these pre-humans. Some of these characteristics include the masters of heredity DNA and RNA as well as proteins composed of amino acids, membranes or bound cells and lastly controlled cell division ...
    Related: biology, evolution, human biology, human brain, human evolution, human life
  • Biology Instinct - 467 words
    Biology Instinct subject = biology title = Biology Instinct Insects are neumerout invertebrate animals that belong in the Phylum Arthropoda and Class Insecta. The class Insecta is divided into 2 subclasses: Apterygota, or wingless insects, and Pterygota, or winged insects. Subclass Pterygota is futher divided on basis of metamorphosis. Insects that have undergone incomplete metamorphosis are the Exopterygota. Insects that undergo complete metamorphosis are the Endopterygota. Insects have an outer bilateral exoskeleton to which the muscles are attached to and provides protection for internal organs. The body is divided into 3 main parts which are the head, which include mouthparts, eyes, and ...
    Related: biology, instinct, muscular system, reproductive system, allergic
  • Biology Molecule - 1,080 words
    Biology Molecule Unit 1 -man is high 50s to 60% water -distribution in body divided into 3 compartments: 1) intracellular - 28 litres 2) intercellular/interstitial fluid - 11 litres - 80% 3) blood plasma - 3 litres - 20% -women contain less water than men -organisms can contain 60-80% water -bacteria have lots of water -fat cells have little -waters properties result from its structure and molecular interactions -water is polar -polar covalent bonds and asymmetrical shape give it opposite charges on opposite sides -electrons spend more time around O giving H a slight positive charge -hydrogen bonds form between the oxygen of one molecule and the hydrogen of another -cohesion: substance being ...
    Related: biology, molecule, nucleic acids, human body, atom
  • Biology Molecule - 1,108 words
    ... covalent bond or a glycosiolic link -bond is angular and forms a spiral called an alpha helix -if it branches, amylopectin is formed -cellulose is a 1-4 linkage of beta glucose -this creates a straight strand and not a helix -these bonds are rigid and require special enzymes (cellulase) to break them -the position of the beta glucose molecules alternates Lipids: -humans rarely eat pure lipids -cell membranes are primarily lipid and lipids can easily enter cells, carrying a foods flavor with them -a diet should have less than 30% fat, 55-65% carbs, and 10-15% protein -lipids are important as a source of energy, insulation (adipose tissue), cushions for the internal organs, as a lubricant, ...
    Related: biology, molecule, heart disease, boiling point, blood
  • Biology Of Earth - 545 words
    Biology Of Earth Sometime during our lives, we've questioned ourselves at one point just how long has the earth existed and how did life begin? Our Biology book written by: Solomon, Berg, and Martin, shows theories that has taught us that earth is approximately 4.6 billion years old, and the earliest pieces of life form found was dated back to approximately 3.8 billion years old. This only leaves a time space of 800 million years between the formation of earth and the creation of life. Since then, new theories have shown that life may have originated earlier then they thought. From Bernstein, Sanford, and Allamandolas' article, "Life's Far-Flung Raw Materials" comes the theory that only abou ...
    Related: biology, amino acids, building blocks, raw materials, evolution
  • Biology Project Aids - 836 words
    Biology Project - A.I.D.S. A.I.D.S. (Acquired Immune Deficiency Syndrome) is a very deadly disease. It is mostly translated through the blood, sharing needles, sexual intercourse, and when an infected mother breast-feeds her child. In this essay I will show you the causes, symptoms, clinical progression, opportunistic infections, and the treatment you can receive to delay the effects of aids. Aids are caused by two viruses that belong to a group called retroviruses. Researchers in France discovered this in 1983 and in the U.S. in 1984. This was known as the HIV-1. HIV infects certain white blood cells. Some of these cells are the T-helper and the macrophages, which play key roles in the immu ...
    Related: aids, biology, weight loss, white blood cells, replication
  • Biology Test Questions - 294 words
    Biology Test Questions Question 1 (10 points) Chromatids are 1. attached at the centriole. 2. a pair of chromosomes, one from the mother and one from the father. 3. attached at their centromeres. 4. identical until crossing over occurs. 100.0% 5. both 3 and 4 are correct Score: 10.0 / 10.0 Question 2 (10 points) Different, or alternative, forms of the same gene are called 1. genetomorphs. 100.0% 2. alleles. 3. mutants. 4. chromatids. 5. homologous. Score: 10.0 / 10.0 Question 3 (10 points) If a diploid organism has a genome consisting of 4(four) chromosomes, it can produce different combinations of maternal and paternal chromosomes in the offspring (disregarding crossing over). 1. 4 2. 8 3. ...
    Related: biology, gene expression, reproduction, chromosomes
  • Biology Test: Cells - 748 words
    Biology Test: Cells My brother was studying for his biology test. The next morning he was telling me about the dream he had. He said he traveled through a cell. I started to call him insane. My brother have an educational dream? I thought to myself, impossible. My brother started to tell me his crazy dream. The first place he came upon was the cell wall. He was trying to find a way out. He said he started to talk to the cell wall. He asked the cell wall the way out. The cell wall said to him "How should I know? I'm the outer most part of the cell all I do is make cellulose. You might want to ask the cell membrane she is right next to me." He told me he didn't have to walk far to get to the c ...
    Related: biology, cellular respiration, assembly line, nucleus, dream
  • Computers And Biology - 1,259 words
    Computers And Biology By Jack Brown Computers have enhance the study of Biology tremendously, as well discoveries have enhance the progression of computers. Without computers, Biology would be no where. We would not have the high tech microscopes. We would not be able to process information at lighting speeds. Finally, we would have no place to store all the information that we gathered. Can you imagine all the paper we would use to record all the information that we gather? Computers have not only helped us with experimenting; they have helped us to educate students. There has been tons of software developed to educate students about science and in particular Biology. They have allowed stud ...
    Related: biology, computer industry, computer system, computer systems, computer technology, computers, molecular biology
  • Descartes Applied To Biology - 683 words
    Descartes Applied To Biology Descartes method of questioning what is real is a very important aspect of the world of science. I will show how this method of philosophy is crucial to the studies of biology. Descartes said that the only time that something is not doubted is when it is clear and distinctly true. This is the difference in science between theory and fact. In order for something to be clear and distinct it must be a fact. DNA was discovered on April 25,1953 by James Watson and Francis Crick. They discovered that it was a double helix made up of 5 carbon sugars, phosphates, and 4 different nitrogenous bases. This is where Descartes comes in to play. There was much questioning wheth ...
    Related: biology, descartes, james watson, double helix, watson
  • Living Thing Biology - 2,286 words
    Living Thing Biology Living things make up the world as we know it. Living things are involved in our life constantly, seeing that we are alive. There are five characteristics that are common to all living things. Living things are made up of one or more cells. Each cell is made up of living matter and is separated by a barrier that encloses the cell from its surroundings. However, there are many different kinds of cells that make up living things. A single cell can be one organism. These organisms are known as unicellular. Most of the organisms that we know best such as people, trees, and dogs are all made up of more than one cell. Organisms made of more than one cell are said to be multice ...
    Related: biology, carbon dioxide, atomic number, energy level, molecule
  • Living Thing Biology - 2,293 words
    ... to the cell, it is the information center and contains DNA. DNA stores genetic information that is passed to one generation to the next. The DNA in a cell is attached to special proteins. These proteins are called chromosomes. Chromosomes contain genetic information that is passed through generations. The nucleus of a cell tend to be about two to five micrometers in diameter. Surrounding the nucleus there are two membranes called the nuclear envelope. The nuclear envelope contains dozens of small pores, through which molecules move in and out of the nucleus. In most nuclei, there is a small region called the nucleolus. It is made up of RNA and proteins. In the nucleolus, ribosomes are ma ...
    Related: biology, bald eagle, circulatory system, nervous system, pocket
  • Marine Biology - 445 words
    Marine Biology Aquarium Assignment A major source of coastal pollutants, human sewage fouls bays and beaches with both toxic and nontoxic pollutants. Although billions of dollars have been invested in sewage treatment plants to treat wastewater, new and growing coastal communities have increased the amount of discharge into oceans and estuaries. The United States Office of Technology Assessment has identified thirteen hundred major industries and six hundred municipal wastewater treatment plants that discharge into coastal waters of the United States. Many toxic substances enter the sea through the sewer systems, but others originate as industrial discharges. For many toxic substances, we do ...
    Related: biology, marine, marine biology, marine life, united states office
  • Marine Mammal Biology - 771 words
    Marine Mammal Biology Marine Mammal Biology How many different jobs are there and what education is needed? ? I decided to do a report on Marine Mammal Biology. I have a deep interest in this subject and one day would like to pursue a career in Marine Mammal Biology. There are about 100 species of aquatic or marine mammals that depend on fresh water or the ocean for part or all of their life. These species include Pennipeds (seals), sea lions, fur seals, and walruses, Cetaceans (baleen and toothed whales, ocean and river dolphins and porpoises), Sirenians which are manatees. Scientists try to study there animals genetic, systematic, and evolutionary relationships, population structure, commu ...
    Related: biology, mammal, marine, higher education, technical writing
  • Molecular Biology - 1,677 words
    Molecular Biology Molecular Biology Abstract The bacterium used in this lab, Escherichia coli (or E. coli) is an ideal organism for the molecular geneticist to manipulate. It can easily be grown in suspension culture in a nutrient medium such as Luria broth, or in a petri dish of Luria broth mixed with agar (LB agar) or nutrient agar. Genes can be transferred between bacterial in three ways: conjugation, transduction, or transformation. Bacterial transformation involves transfer of genetic information into a cell by direct uptake of the DNA. During gene transfer, the uptake and expression of foreign DNA by a recipient bacterium can result in conferring a particular trait to a recipient lacki ...
    Related: biology, molecular, molecular biology, recombinant dna, bacterial cell
  • Mr Posgais Biology Ii Class Lab - 753 words
    Mr. Posgai's Biology Ii Class Lab Abstract Mr. Posgais Biology II class often pondered the thought of insects attraction to certain colors on flowers. Well, on September 14, 1999, we decided to experiment and figure out which colors on flowers were more dominant over others. Our Biology class divided up into groups of two and three people. Each group took a different colored piece of poster board. One person in each group applied Tangle Trap to the twelve by nine inch area and stapled each board to a piece of lattice. We then took the lattice outside, about fifty feet from the school building and left it outdoors for about forty-eight hours. When we retrieved our lattice, we counted the numb ...
    Related: biology, different types, bird, careful
  • The Book The Lives Of A Cell: Notes Of A Biology Watcher Was Very Well Written By Lewis Thomas This Book Covered A Lot Of Ins - 341 words
    The book The Lives of a Cell: Notes of a Biology Watcher was very well written by Lewis Thomas. This book covered a lot of insects such as ants, termites, bees, wasps, and moths which I liked because insect interest me. I was surprised to learn how strong the earth actually is, in contrast with the delicate flower that we are told it is. I learned that thousands of dollars are wasted every year on medical bill that we didnt even need to go see a doctor about. I also read, that if we ever do find alien life, it might not be the little green martian we have seen so much of, it might be a microbe, a strand of nucleic acid, or a molecule of enzyme. I found out that many animal give off odors cal ...
    Related: biology, lewis, notes, watcher
  • None - 262 words
    To investigate the abiotic factors which affect the biodiversity of invertebrate organisms in a series of 6 ponds over a period of 2 months. By Contents Page Abstract Contents page Introduction Hypothesis Method Results Conclusions Limitations Reliability Sources of error Modifications Appendix Bibliography Footnotes Acknowledgements Abstract For this investigation I visited 6 ponds and a spring, at each location I recorded the following data: Temperature Turbidity Colour and appearance of water pH of water Nitrate level of water Ammonia levels of water Oxygen levels of water Number and species of life present in the pond I will use shop brought chemical tests for many of the chemical analys ...
    Related: chemical analysis, abstract, species, pond
  • A Parasite Is Defined As An Organism That Lives In Or On Another Organism, Called A Host 2 If The Parasite Has The Capacity T - 1,538 words
    A parasite is defined as an organism that lives in or on another organism, called a host (2). If the parasite has the capacity to cause disease in the host then the parasite is called a pathogen. Disease in the host is caused by the infection of the parasite. The interaction between the host and parasite is complex. Both the pathogen and the host strive for survival in some of the cases. The pathogen divides within or on the host in an attempt to keep its species alive while the hosts defense mechanisms simultaneously attempt to eliminate the pathogen. The extent of the battle for survival varies depending on the relationship. This paper discusses the disease state of Chlamydia; how the orga ...
    Related: capacity, host, organism, parasite, upper saddle
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