Biological Membranes Essays

  • Biological Membranes: The Structure Of Biological Membranes

    1051 Words  | 3 Pages

    Membranes play an integral function in trapping and securing metabolic products within the borders of a cell within an aqueous environment. Without a selectively permeable border surrounding sites of anabolic function, potential useful products of this metabolism would simply diffuse away in the aqueous environment contained within and surrounding the cell. However, securing metabolites within the cell also comes with a price of not being able to acquire potentially useful compounds from the surrounding

  • What Are The Major Components Of Biological Membranes And How Do They

    2577 Words  | 6 Pages

    What Are The Major Components of Biological Membranes And How Do They Contribute To Membrane Function?. Summary. The role of the biological membrane has proved to be vital in countless mechanisms necessary to a cells survival. The phospholipid bilayer performs the simpler functions such as compartmentation, protection and osmoregulation. The proteins perform a wider range of functions such as extracellular interactions and metabolic processes. The carbohydrates are found in conjunction with both

  • The Effect of Placing Pieces of Potato in a Sucrose Solution

    654 Words  | 2 Pages

    concentration are separated by a semi-permeable membrane which is permeable to the smaller solvent molecules but not to the larger solute molecules, then the solvent will tend to diffuse across the membrane from the less concentrated to the more concentrated solution. This process is called osmosis. Osmosis is of great importance in biological processes where the solvent is water. The transport of water and other molecules across biological membranes is essential to many processes in living organisms

  • Biological And Physical Process Of Aging

    646 Words  | 2 Pages

    The aging process is difficult to analyze because of the way that the body’s organ systems work together. The breakdown of one structure will ultimately affect the function of others. The medical field of gerontology deals with examining the biological changes of aging, both passive and active, that occur at the molecular and cellular levels. This paper will seek to explore those changes, and the affect that they have on the process of aging. Aging as a passive process involves the breakdown of structures

  • A Biological Look at Suicide

    2783 Words  | 6 Pages

    Efficiency Above All: A Biological Look at Suicide "And let me ask you this; the dead, where aren't they?" – Franz Wright, New Yorker Magazine, Oct. 6, 2003 "Dear Mom and Dad," the letter begins benignly, "Thank you for all of your commitment. But I am not a suitable daughter, and you will all be better off without me. Please realize I have done this for your own good." Nothing more. And beside it, Mr. and Mrs. A find their daughter, dead by her own hand. So begin the episodes of anguished

  • Investigation of the Movement of Pigment through Cell Membranes

    1234 Words  | 3 Pages

    Investigation of the Movement of Pigment through Cell Membranes Aim The aim of the investigation is to identify the effect of temperature of the movement of pigment through cell membrane of beetroot cells. Prediction and Reasoning [IMAGE]I predict that the temperature will effect the movement of the beetroot pigment through the cell membrane. I believe an increase in temperature would result in an increase in the amount of pigment being released out of the cell. I base my prediction

  • Pain and Panic: The Demons behind Biological Fear

    1229 Words  | 3 Pages

    Pain and Panic: The Demons behind Biological Fear "A variety of terms are used to describe fear. The Bible uses words like fear, afraid, terror, dread, anxious, tremble, shake, and quake over 850 times to portray this core human emotion. Healthcare professionals use terms like fear, anxiety, panic attack, and phobia to illuminate the spectrum of our fears." (2) Our emotions are said to be the most subjective of all our biological components. It seems that we have a difficult time grasping

  • Misunderstanding Men And Women

    2223 Words  | 5 Pages

    Misunderstanding Men and Women Since the beginning of biological time, males and females have had noticeable and unnoticeable differences. These differences have caused conflicts, which have endured time and are still a part of our modern everyday lives. However, the discord has become more defined than what is characterized as a woman and a man. In order to attempt accordance between the sexes, it is essential that we educated ourselves in the true meanings of men, women, masculinity, femininity

  • Biological Theories of Manic-Depression

    1283 Words  | 3 Pages

    Biological Theories of Manic-Depression Like every mental illness, there is no definitive evidence concerning the etiology of manic-depression, also known as bipolar disorder. The disorder is characterized by alternating periods of depression and mania and occurs in 1% of the population. The depressive episodes can range in severity from dysthymia to major depressive episodes. The major depressive episodes are classified as periods of at least two weeks in length during which sadness, lethargy

  • Bioinformatics - Solving Biological Problems Using DNA and Amino Acid Sequences

    3063 Words  | 7 Pages

    Bioinformatics - Solving Biological Problems Using DNA and Amino Acid Sequences 1. Introduction In the wake of Genomic revolution, biology that used to be a lab-based science has transformed to embrace Information science. Human Genome Project is a 13-year project focusing on identifying approximately 30,000 genes in human DNA. The information found is stored in databases, analyzed and used for different purposes like simplifying diagnosis of disease, earlier detection of genetic predisposition

  • Race: biological or cultural

    1148 Words  | 3 Pages

    Race: Social Concept, Biological Idea Race, in the common understanding, draws upon differences not only of skin color and physical attributes but also of language, nationality, and religion. Race categories are often used as ethnic intensifiers, with the aim of justifying the exploitation of one group by another. Race is an idea that has become so fixed in American society that there is no room for open-mindedness when challenging the idea of racial categories. Over the years there has been a

  • Race: Biological or Cultural?

    768 Words  | 2 Pages

    Through research of DNA samples, scientists have been able to declare that race is not biologically constructed due to the similarities between human genes. Nevertheless, in reality, people still emphasized on biological aspects such as skin color, or hair texture to categorize others into different races. This in turn, denied the true identity of race, which it is culturally constructed. Ethnicity, by definition is also culturally constructed, therefore it greatly resemble race. There is no real

  • Metaphor, Sociobiology, and Nature vs. Nurture: The Biological Battle of the Century

    2342 Words  | 5 Pages

    Metaphor, Sociobiology, and Nature vs. Nurture: The Biological Battle of the Century Ladies and Gentlemen! I am proud to present one of the biggest and longest-running biological battles of the century! Tonight we recap the surprising nature vs. nurture fight. The following pages will explain the highlights, but if you want to learn about this war in its entirety, you’ll find the blow-by-blow account available to the public in Connie Barlow’s collection, From Gaia to Selfish Genes, in a chapter

  • The Biological, Social, and Artistic Construction of a Serial Killer

    2451 Words  | 5 Pages

    Making a Monster: The Biological, Social, and Artistic Construction of a Serial Killer From Psychosis to Sondheim Jack the Ripper, John Wayne Gacy, Ted Bundy, the Boston Strangler, Jeffrey Dahmer. Despite the years of history that separate these names, they remain indelibly preserved within our collective societal consciousness because of the massively violent and calculated nature of their crimes. Serial killers, both men and women, represent social monstrosities of the most terrifying variety

  • Imperialism: Historical and Biological Perspectives

    3139 Words  | 7 Pages

    Imperialism: Historical and Biological Perspectives Imperialism evokes images of past grandeur, expansive landholdings and wealth that do not seem to be conducive to modern-day existence. Yet as a general paradigm of behavior, imperialism may be more ubiquitous and inherent than first glance would suggest. By drawing analogy between the actions of historically imperialistic nations and bee colonies, a universal “imperialism” emerges, spanning history and nature. In the Roman Empire and current

  • Biological Determinism

    2924 Words  | 6 Pages

    Biological Determinism 1.      According to the author of the article "All in the Genes?", there is no intrinsic causality between genetics and intelligence. The author analyses different aspects of biological determinism, and supplies many examples, which illustrate aspects of this problem that are being discussed since the time when these ideas became popular. He does not agree with biological determinist that the intellectual performance of a person depends on genes inherited from his parents

  • Biological Differences that Exist Between Individuals in a Population

    3736 Words  | 8 Pages

    Biological Differences that Exist Between Individuals in a Population Physical anthropologists view humans as biological organisms. Coupled with genetics and biochemistry, scientists can form a more complete picture of human anatomy, both past and present. Physical anthropology looks at human variation and evolution. Variation looks at the biological differences that exist between individuals within a population and at individuals between populations (e.g., body shape, size, and physiological

  • biological species concept

    1488 Words  | 3 Pages

    Biological Species Concept (BSC) What are biological species? At first glance, this seems like an easy question to answer. Homo sapiens is a species, and so is Canis familaris (dog). Many species can be easily distinguished. When we turn to the technical literature on species, the nature of species becomes much less clear. Biologists offer a dozen definitions of the term "species". These definitions are not fringe accounts of species but prominent definitions in the current biological literature

  • Biological Causes of Anorexia Nervosa and Bulimia Nervosa

    2607 Words  | 6 Pages

    Biological Causes of Anorexia Nervosa and Bulimia Nervosa Anorexia nervosa and bulimia nervosa affect millions of people each year in the United States (1). Popular thought holds that these disorders are caused by women trying to fulfill a culturally imposed ideal body image which stresses thinness. As anorexia and bulimia have proven difficult to treat solely with a psychological-based treatment plan it is likely that there are many factors contributing to these disorders. Research has shown

  • social and biological death

    938 Words  | 2 Pages

    Social / Biological Death Humans are bound to die inevitably. Not a single person, no matter how much money you have, or how beautiful you are, death is inescapable. While we all know we are eventually be deceased, we try to make the best of it. We all strive to make our life as comfortable as possible; surround ourselves with warm people, fall in love, start a family, make friends, and the list goes on. Majority of people lead a normal, satisfying happy life until their age catches up and passes