Biology Free Essay Examples And Topic Ideas

Animal Breathing: Evolution’s Design

Words: 870 Pages: 3 5576

The complexity and diversity of respiratory systems across the animal kingdom offer a fascinating glimpse into the evolutionary adaptations that have enabled organisms to thrive in various environments. Every living creature, whether a simple microorganism or a complex mammal, requires a mechanism to obtain oxygen, expel waste, and metabolize food for energy production. This essay delves into the various respiratory systems found in the animal kingdom, illustrating the remarkable ways in which life has adapted to meet these essential needs. […]

Endangered Species: Turtle Habitat Program

Words: 586 Pages: 2 6721

Conservation Need: Sea turtle habitats, particularly in the Gulf of Mexico and the Savannah, Georgia area, are facing severe threats. Once thriving, these habitats have suffered significant losses, with approximately five species of sea turtles disappearing from over 53% of their original wetland territories. The urgent need for conservation stems from critical environmental degradation factors, including pollution, coastal development, and human interference, which have significantly reduced the quality and availability of these vital habitats. Performance Targets: A comprehensive conservation strategy […]

Endangered Species Environmental Impact Human Nature

The Fascinating Life of Butterflies: Unveiling Nature’s Metamorphosis

Words: 782 Pages: 3 7078

Introduction Butterflies, with their vibrant colors and delicate wings, have long captured the imagination of humans. From small children chasing them with nets to serious scientists meticulously studying their transformations, butterflies continue to intrigue and enchant us. This fascination is evident in the fact that one of the largest collections in the Natural History Museum is dedicated to Lepidoptera, encompassing butterflies and moths, with 10 million specimens. Each butterfly tells a unique story about the world around it, offering insights […]

Animals Nature

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Henrietta Lacks – Scientist

Words: 2322 Pages: 8 6343

Although Henrietta Lacks died 65 years ago, her cells known as the HeLa line, live on, propelling scientific advances around the world. After their discovery, HeLa cells enabled the development of in vitro fertilization, the first clone of a human cell, the development of the polio vaccine, advances in gene mapping, and so much more. However, prior to the publishing of Rebecca Skloot’s The Immortal Life of Henrietta Lacks, few people knew the source of the HeLa cells. Skloot’s book […]

Henrietta Lacks Medicine

Diosgenin in Colon Cancer

Words: 878 Pages: 3 5856

The author noted that diosgenin constrains the 3-hydroxy-3-methylglutaryl CoA reductase expression and stimulates apoptosis in human colon tumor cells. Diosgenin is also a potent inhibitor of HCT-116 with growth inhibition and induction of apoptosis [39]. Diosgenin induces apoptosis via the cyclooxygenase-2 and 5-lipoxygenase pathways in HT-29 and HCT-116 [40]. The author described diosgenin's ability to enhance 5-LOX activity; its inhibition by AA-861 notably reduces the apoptosis of colorectal tumor cells. Moreover, colorectal carcinoma cells expressing COX-2 are less sensitive to […]

Biotechnology Cancer

Alcohol in Moderation

Words: 394 Pages: 1 5765

Alcohol, in moderation, can have positive health benefits, but when it is drunk in excess, it can negatively influence the body. (1) Alcohol can have an altering effect on the liver cell structure. When these cells are permanently changed, it affects the liver's ability to metabolize fat, which can lead to the development of a fatty liver. (2) The brain cells are also influenced when alcohol is introduced into the body. Brain cells are killed with excessive drinking, and it […]

Alcohol Alcohol Abuse Alcoholism Malnutrition Medicine Nutrition

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Cancer is a Vast Disease Category

Words: 2004 Pages: 7 6759

Abstract Cancer is a vast disease category that requires constant research for a cure. Over the decades, different treatment plans have arisen to try and combat the range of cancer cells. Some treatment has resulted in success, some end in death, and others are still an ongoing battle for the patients. Anti-cancer drugs have many side effects that come with them such as fatigue, inflammation, infection, and necrosis of cancerous cells. Cancer medicine has come a long way and now […]

Biotechnology Cancer Disease Medicine

The Dance of Molecules: Reactants in Cellular Respiration

Words: 550 2661

If one were to observe the bustling world inside our cells, it would rival the most intricate ballet or the busiest of city streets. At the heart of this choreography lies cellular respiration, the metabolic pathway that provides energy to power this cellular world. In a harmonious dance, specific reactants come together and undergo a series of reactions to produce the precious molecule ATP, the cell's primary energy currency. But what exactly are these reactants, and why are they so […]

Biology of Sexual Orientation

Words: 1000 Pages: 3 5827

Sexual orientation represents one of the most distinct gender differences observed within the animal kingdom. Introduction It is a fundamental aspect of human behavior, with the vast majority of individuals identifying as heterosexual. This norm, however, does not encompass the entirety of human experience, as a significant minority, estimated between 2% and 6%, report predominantly homosexual attractions (Diamond, 1993). Understanding the biological basis of sexual orientation has long been a subject of scientific inquiry, providing insights into the complex interplay […]

Culture Gender Human Sexuality Sex Sexual Orientation

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Respiratory Distress and Failure: a Medical Overview

Words: 919 Pages: 3 6393

Respiratory distress and failure are critical conditions that demand immediate attention and precise intervention, especially within emergency medical services. Introduction These conditions arise when the body's respiratory system struggles or fails to maintain adequate gas exchange, leading to insufficient oxygen levels in the blood. This essay delves into the intricacies of respiratory distress and failure, exploring their symptoms, underlying causes, and the vital role of emergency medical technicians (EMTs) in managing these life-threatening situations. By examining the distinctions between respiratory […]

Sepsis and Homeostasis

Words: 529 Pages: 2 6441

According to the Gale Encyclopedia of Nursing and Allied Health, Sepsis is a systemic infection that spreads rapidly through the bloodstream and body tissues. Sepsis develops as a result of a massive immune response to bacterial infection that begins as a localized infection, but then spreads into the bloodstream. (Oberleitner & Culvert, 2018) Normal immune and physiologic responses eradicate pathogens, and the pathophysiology of sepsis is due to the inappropriate regulation of these normal reactions (Stearns-Kurosawa, Osuchowski, Valentine & Remick, […]

Immune System Medicine

Mitochondrial Dysfunction in Leukocytes from PCOS

Words: 730 Pages: 2 5713

Mitochondrial dysfunction in leukocytes from PCOS women with insulin resistance was evident by a decrease in mitochondria oxygen (O2) consumption. This was indicated by an increase in ROS production, the oxidized glutathione/glutathione ratio, and TNF? levels, as well as a decrease in mitochondrial membrane potential. Additionally, a defect was observed in the activity of complex I of the mitochondria, which may contribute to the oxidative stress evident in these PCOS women [72]. Furthermore, PCOS women with IR exhibited impaired endothelium […]

Biotechnology Exercise

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Foreign Aid and Micro-entrepreneurship Microfinance Sustainability and Complementary Programs

Words: 1085 Pages: 4 5858

Cross-borrowing enables clients to collect more money from various institutions without close inspection, and the number of applicants for microfinance has rocketed due to cross-borrowing. This has caused new problems for the microfinance sector. The purpose of achieving self-financial sustainability did not have a positive outcome. Because of the poor portfolios of the clients, MFIs could not demand repayment of the debts from the borrowers. Cross-borrowing also deteriorated the financial situation of the poor and trapped them in the cycle […]

Sustainability

Diffuse Intrinsic Pontine Gliomas

Words: 3372 Pages: 11 5579

Introduction/Epidemiology A diffuse intrinsic pontine glioma (DIPG), is a malignant tumor of the pons of the brainstem that originates in the supportive tissue called the glia. Specifically, these tumors are diffuse astrocytomas meaning that the tumor develops from astroglial cells of the brain stem. This tumor accounts for about 10%-20% of all brain tumors in children and roughly 80% of the 300-400 pediatric brainstem tumors that are diagnosed each year. The majority of children who develop this tumor type are […]

Biotechnology Cancer Immune System

Facts about Cells

Words: 333 Pages: 1 6139

All living cells will eventually decay and die. There are two recognized types of cell death: apoptosis and necrosis. Apoptosis refers to the “self-destruction” of a cell by its own mechanisms. Typically, a cell will undergo apoptosis when it is no longer able to repair itself. This could result from a number of possible cell injuries including viral infection, mutation, protein dysfunction, and DNA damage by way of free radicals. Apoptosis is implemented by enzymes called caspases, which have the […]

Medicine

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The Delicate Dance of Life: Unraveling the Mystery of Birth

Words: 626 2675

There are moments in life that spark insatiable curiosity, and few questions resonate as universally as, "Where do babies come from?" While many a parent has pondered how best to answer this when posed by a young child, the reality is that the genesis of human life is both a scientific marvel and a philosophical wonder. At the heart of the biological explanation is the union of two distinct cells: the sperm from the father and the egg from the […]

The Enigma of the Dracula Monkey: Nature’s Mysterious Marvels

Words: 503 2622

In the dense, layered canopies of the Southeast Asian rainforests, an elusive and rather unusual primate goes about its daily activities, virtually unseen by the human eye. Aptly nicknamed the "Dracula monkey," the Nycticebus coucang, or the slow loris, is not just another adorable face in the animal kingdom. Behind those wide, innocuous eyes lies a fascinating story of evolution, survival, and mystery that's captured the curiosity of scientists and nature enthusiasts alike. The slow loris, despite its innocent appearance, […]

The Unsettling Realism of “Never Let me Go”

Words: 726 Pages: 2 3167

Science fiction films often depict advanced technologies and societal transformations in futuristic worlds. This imaginative leap, while intriguing, often lacks the emotional resonance needed to deeply engage viewers, as the characters and their environments are too detached from our own reality. However, the 2010 film "Never Let Me Go," adapted from Kazuo Ishiguro's 2005 novel, offers a stark contrast. Set between the 1970s and 1990s, it presents a hauntingly familiar world, thus providing a unique and disturbing exploration of human […]

Never Let Me Go

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Apoptosis in each Living Thing

Words: 350 Pages: 1 5619

Apoptosis goes on in each living thing. It shapes the beginning life form of every animal and is behind the huge adjustments of caterpillars into butterflies and tadpoles into frogs. Some plant cells moreover deliberately execute themselves, for example, to stop an assaulting parasitic or bacterial tainting spreading. In run of the mill tissues there is a concordance between the period of new cells by methods for cell division and the loss of cells by methods for cell downfall. Old […]

Biotechnology

Estrogen, a Steroid Hormone

Words: 246 Pages: 1 6055

Our results extend previous observations describing estrogen's neuroprotective effects. A previous study suggested that the sex hormones estrogen and testosterone worked differently as neuroprotective agents. It provided data for a role of testosterone as a neuroprotective hormone in neurons. When looking at how they regulate protease activity, their results show that testosterone and dihydrotestosterone inhibited calpain activation and the generation of the 17-kDa tau fragment, but did not work on caspase-3 activation and tau truncation at Asp421 as estrogen did. […]

Biotechnology Dementia Medicine

Immunity – Humans are Exposed with Microbes

Words: 1525 Pages: 5 5920

Humans are exposed to microbes that contain a vast array of allergenic substances, threatening normal homeostasis. Therefore, the immune system is important to defend the body from pathogens. It eliminates pathological microbes and toxic or allergenic proteins, but it must avoid responses that cause excessive damage to self-tissues or potentially eliminate beneficial commensal microbes. A general feature of the immune system is that its mechanisms rely on detecting structural features of the pathogen or toxin that mark it as distinct […]

Biotechnology Immune System Medicine

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Role of OX -Notch Signaling in Thymic Treg Development and Homeostasis

Words: 501 Pages: 2 5810

Regulatory T cells (Tregs) plays a crucial role in immune tolerance and diminution of their homeostatic balance causes autoimmunity. Tregs are generated in the thymus (Natural Tregs) and contribute a major portion of the peripheral Treg pool where they suppress self-reactive effector T-cell response. Thymic Treg development occurs in two phases i) In TCR-dependent phase where thymocytes expressing high-affinity T-cell Receptors (TCR) give rise to CD4+CD25-FoxP3low and CD4+CD25+FoxP3- Treg progenitors, ii) In the second TCR-independent phase thymic Treg progenitors gain […]

Immune System

The Dance of Nerves: Somatic Vs. Autonomic Systems

Words: 546 2616

In the intricate tapestry of the human body, nerves play a crucial role, acting as the threads that connect our internal world with the external environment. Like a symphony's conductor coordinating individual instruments to produce harmonious music, our nervous system ensures that different parts of our body work in tandem. Two principal actors in this performance are the somatic and autonomic nervous systems. Although they share the stage, each plays a unique role, making them both distinct and indispensable. The […]

Globular Protein – Caspase-9 Enzyme

Words: 1591 Pages: 5 5542

The globular protein caspase-9 may initially not seem very important or significant, as it sounds like the ninth of many other caspase proteins. However, this protein plays a vital role, not only in the cell’s life cycle but also in the life of humans and other mammals. Caspase-9 is an enzyme whose function ultimately leads to cell degradation and apoptosis. This protein is a member of the peptidase family C14, and is encoded by the CASP9 gene located on the […]

Biotechnology Protein

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Ethical Challenges in Medical Research: the Story of HeLa Cells

Words: 593 Pages: 2 6703

The book "The Immortal Life of Henrietta Lacks," written by American author Rebecca Skloot, delves into the complex narrative of Henrietta Lacks, a poor tobacco farmer from the Southern United States. In 1951, Henrietta's cervical cancer cells were collected without her knowledge or consent, leading to the creation of the HeLa cell line. This line of cells became the first immortal human cell line and has been instrumental in numerous scientific and medical advancements. However, the ethical implications of using […]

Cancer Health Care Henrietta Lacks Medicine Public Health

About the Cellular Basis of Cancer

Words: 1885 Pages: 6 6074

At a cellular basis, cancer cells are not that different from normal cells. In fact, from a biological view point cancer cells originate from normal cells. The features of a cancer cell; such as migrating away from its origin point, mutating and replicating itself, evading cell death and providing itself with a supply of oxygen and nutrients, can all be found in normal healthy cells (Oppenheimer 2006; Tu 2010). However, it is what these cells then do to the surrounding […]

Biotechnology Cancer Medicine

Human Mating: Evolution and Society

Words: 923 Pages: 3 7117

The question of human mating preferences has fascinated researchers across fields such as biology, sociology, and psychology. At its core, the purpose of life from a biological standpoint is to reproduce and ensure the survival of the species. However, the complexities of human relationships and societal influences raise the question: are our mating preferences primarily driven by evolutionary imperatives or cultural standards? This essay will delve into both perspectives, examining the interplay between evolution and culture in shaping human mate […]

Beauty Competition Culture Sex

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What is UV Light?

Words: 1463 Pages: 5 5888

"The visual system is arguably the most important sense that humans have in order to navigate the world around them. The eyes are highly susceptible to UV light, making them a prime target for free radical oxidation of both lipids and proteins, causing cell damage and eventually, cell death. One such disease caused by UV light exposure is called age related macular degeneration (AMD), which is the most common cause of blindness in the United States. This disease is complicated […]

Biotechnology Oxygen Protein

Hepatitis A: Understanding, Prevention, and Homeostasis

Words: 675 Pages: 2 5914

Hepatitis A is a communicable infection of the liver caused by the hepatitis A virus (HAV). This virus is typically transmitted through direct contact with an infected person or via the fecal-oral route, often through contaminated food and water sources (Linder & Malani, 2017). While the disease can affect anyone, certain populations are at higher risk, including those who use illicit drugs, men who have sex with men, and travelers to regions where Hepatitis A is prevalent (CDC, 2018). This […]

Medicine Public Health Vaccine

Guardians of the Cell: the Intricate Ballet of Selective Permeability

Words: 586 2455

In the vast universe of biological phenomena, few concepts are as fundamental as selective permeability. At its essence, selective permeability acts as the guardian of a cell, determining which substances can enter or exit, thus ensuring that the cell's internal environment remains stable and conducive to life. This nuanced balance is the crux upon which cellular function—and by extension, all life—hinges. Imagine, for a moment, a bustling city. Just as city walls in ancient civilizations protected inhabitants from potential threats […]

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Biology - Free Essay Examples And Topic Ideas

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