Biology Free Essay Examples And Topic Ideas

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

Words: 501 Pages: 2 4875

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

Journal Article for Review: Apoptosis-induced CXCL5

Words: 1438 Pages: 5 4770

The article under review examines the acceleration of inflammation and growth of prostate tumor metastasis in bone due to apoptosis-induced CXCL5. Tumor cell death, which can be increased by targeted therapies, causes immense efferocytosis to clear the apoptotic cells. It is thought that this can lead to accelerated tumor growth. The scope of this research article is limited to prostate cancer cells and the proinflammatory cytokine, CKCL5, along with other variants. This article will exclude other ways of metastasis of […]

Biotechnology Cancer Immune System Journal Medicine Prostate Cancer

The Dance of Nerves: Somatic Vs. Autonomic Systems

Words: 546 1696

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 […]

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Globular Protein – Caspase-9 Enzyme

Words: 1591 Pages: 5 4592

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

A Form of Preprogrammed Cell Death

Words: 1332 Pages: 4 4770

Apoptosis is a form of preprogrammed cell death. It can occur if DNA is too damaged or if a cell is infected and cannot complete its function anymore. There are two pathways to trigger cell death. The extrinsic pathway begins the process through external ligand binding. The intrinsic pathway begins by releasing mitochondrial proteins into the cell. Both pathways lead to the cell diminishing in size before beginning to break apart. Once this happens, adjacent cells and macrophages take in […]

Biotechnology Cancer Death

Accelerated Inflammation and Cancer Metastases

Words: 1226 Pages: 4 5032

Background Prostate cancer is one of the most common forms of cancer that can metastasize to the bone. The mechanism of how cancer cells break away from their primary origin and travel through the bloodstream to the bone is a process that is still unclear to many scientists (“Bone Metastasis,” 2018). Once cancer cells reach the bone, they become a part of an environment where it is easy for the cells to become mobile, proliferate, and differentiate to proinflammatory cells. […]

Biotechnology Cancer Experiment Medicine Prostate Cancer

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Biological Basis of Human Sexual Orientation

Words: 1557 Pages: 5 5124

The desire to study the biological basis of human sexual orientation in the scientific community is relatively recent phenomenon. To this day, sexual orientation acquisition remains one of the most prominent biological mechanisms unknown to science. It has become clear, however, that human sexual arousal, which is usually triggered by external stimuli or endogenous factors, is a multidimensional experience comprising cognitive, emotional, motivational, and physiological components (Hu et al, 2008). With this in mind, from as early as the 1990s, […]

Sexual Orientation

A Brief Review of Prostate Adenocarcinoma

Words: 2093 Pages: 7 4845

Prostate cancer continues to be a major cause of cancer-related death in the male population of the western world, even with incidence rates on the rise worldwide. This increase in new prostate cancer diagnoses each year in the western world is presumably resulting from their lifestyle and environment (Tian, Guo, Zheng, & Ahmad, 2017). A clear clinical diagnosis of prostate adenocarcinoma rests in the hands of a pathologist following a needle biopsy. It often depends on the absence of the […]

Biotechnology Cancer Prostate Cancer

Ethical Challenges in Medical Research: the Story of HeLa Cells

Words: 593 Pages: 2 5329

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

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About the Cellular Basis of Cancer

Words: 1885 Pages: 6 5092

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 5851

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

What is UV Light?

Words: 1463 Pages: 5 4858

"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

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Hepatitis A: Understanding, Prevention, and Homeostasis

Words: 675 Pages: 2 4739

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 1565

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 […]

Should People be Allowed to Keep Pit Bulls: Challenging Stereotypes

Words: 964 Pages: 3 1961

Understanding Pit Bulls: Debunking Stereotypes Furious, deadly, killers, fighters … These are just some of the names that people use to describe Pit Bulls. Although 71% of dog bite fatalities are from pit bulls, are we too quick to judge the dogs? When looking at these numbers, you are just looking at numbers without an explanation. These bites are the effects of a cause. In 2005, a technician reached into a sedated dog’s mouth to find the source of the […]

Animals Dog

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Cellular Death Process Study

Words: 637 Pages: 2 4915

Cellular death is an essential biological process that occurs in all living organisms. It plays a critical role in development, maintenance, and defense mechanisms within the body. Two primary types of cellular death are necrosis and apoptosis, each with distinct characteristics and implications. Understanding these processes is vital for medical professionals and researchers as they navigate the complexities of human health and disease. This essay delves into the intricate mechanisms of necrosis and apoptosis, comparing their causes, processes, and outcomes, […]

Medicine

Aminoglycoside-Induced Hair Cell Death and Potential Therapies

Words: 1590 Pages: 5 4565

Introduction Hearing loss is the third most common disorder in the United States, being more prevalent than diabetes or cancer (Blackwell et al., 2014). Our ability to hear is dependent on hair cells that can translate the sounds we hear into electrical impulses that can be interpreted by the brain. When sound waves enter the cochlea located in the inner ear, they deflect the apical portion of hair cells, also known as stereocilia. Stereocilia are connected to one another via […]

Biotechnology Death

Cyclic GMP-AMP Synthase

Words: 385 Pages: 1 4448

Genomic DNA can be damaged by endogenous or environmental stresses. During repair, these short single-stranded DNAs are continuously generated and may leak out to the cytoplasm, where they are generally drawn back into the nucleus by DNA repair and replication factors (RPA and Rad51). Alongside this, TREX1, a cytoplasmic exonuclease, is anchored on the outer nuclear membrane to degrade leaking DNAs immediately. This prevents activation of the cGAS/STING pathway against self DNA. Inhibition of any of the above-mentioned proteins leads […]

Biotechnology Immune System

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The Respiratory System: an Exploration of Function and Pathology

Words: 844 Pages: 3 4455

The human respiratory system is a marvel of biological engineering, tasked with the critical function of delivering oxygen to every cell in the body while expelling carbon dioxide, a metabolic waste product. This intricate process, fundamental to life, involves a series of organs and structures working in unison to ensure that oxygen reaches the bloodstream and is distributed efficiently. Beyond its primary function, the respiratory system plays a vital role in the body's defense mechanisms, protecting against harmful particles and […]

Job

Potential Cancer Resistance

Words: 296 Pages: 1 4775

Cancer proliferation is characterized by uncontrolled and unregulated cell growth resulting in tumors. In theory, as the size of organism increases there are more cells developing and dividing meaning that this is an increased probability of cancer development. Although, this response is theorized this is not what actually occurs, but why this trend is observed remains poorly understood. The present study aimed to understand these mechanisms of cancer suppression in large, vertebrate mammals in hopes of gaining insight to human […]

Biotechnology Cancer

The Role of Senescent Cells in Ageing and Cancer Suppression

Words: 1175 Pages: 4 5434

Senescent cells, often termed as "zombie cells," are somatic cells that, although no longer capable of dividing, display resistance to apoptosis, the process of programmed cell death (Scudellari, 2017). These cells accumulate in various body parts, exhibiting unique resistance to apoptosis, expressing distinct extracellular proteins, and secreting diverse molecules, including cytokines (Scudellari, 2017). This secretory activity is known as the cell's senescence-associated secretory phenotype (SASP). The presence of zombie cells and their SASPs can lead to various outcomes (Coppé, Desprez, […]

Biotechnology

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Interactions between Magnetic Nanoparticles and a Static Magnetic Field

Words: 279 Pages: 1 4605

"In this presentation, we reviewed some basic concepts regarding the interactions between magnetic nanoparticles and a static or time-varying external magnetic field. We showed how these pertain to current biomedical applications of magnetic nanoparticles. The focus was, in particular, on magnetic separation and drug delivery, although these are only two of the many biomedical applications of magnetic nanoparticles currently being explored. For example, there's magnetic twisting cytometry, a process in which ferromagnetic microspheres are bound to specific receptors on a […]

Biotechnology Cancer Medicine

Depression: a Complex and Multifaceted Disorder

Words: 684 Pages: 2 6653

Introduction Depression is a prevalent and debilitating mental health disorder that affects millions of people worldwide. Despite its widespread impact, depression remains misunderstood and stigmatized, in part because it lacks definitive diagnostic tests and is often associated with a range of complex symptoms. This essay aims to provide a comprehensive understanding of depression by exploring its pathophysiology, factors influencing its development, and its prevalence and impact on individuals and society. By synthesizing insights from peer-reviewed articles, online resources, and a […]

Clinical Psychology Depression Mental Disorder

Emotional Depth in Coming Home again

Words: 870 Pages: 3 5889

Wayne Wang's film "Coming Home Again" is an introspective exploration of the intricate dynamics between a mother and her son, adapted from Chang-rae Lee's poignant self-portraying article published in the New Yorker in 1995. The film, co-written by Lee himself, delves into the life of a young writer, Chang-rae, who sacrifices his bustling life in New York, including his career and romantic relationship, to care for his ailing mother suffering from stomach cancer. Set predominantly within the confines of a […]

Art Cancer Disease New York City

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My Favorite Season: Summer

Words: 714 Pages: 2 6797

Summer is my favorite season for many reasons. It is a time when nature bursts into life with vibrant colors and invigorating energy, offering a myriad of opportunities for exploration, relaxation, and personal growth. The warm and sunny weather invites us to step outside and engage with the world around us, whether it's by hiking through lush forests, swimming in serene rivers, or simply basking in the sun's gentle embrace. In this essay, I will explore the multifaceted beauty of […]

Animals Person Rain Water

The Marvel of the Amniotic Egg

Words: 515 1577

The natural world offers us many wonders that have evolved over millions of years to provide species with the best chances of survival. One such evolutionary marvel is the amniotic egg. At first glance, an egg might seem like a simple structure, but the amniotic egg, in particular, has played a pivotal role in the evolutionary success of many terrestrial animals, providing a protective environment for the developing embryo. First, it’s essential to recognize what sets the amniotic egg apart. […]

The Rise and Complexities of Gene Editing in America

Words: 935 Pages: 3 5291

The prevalence of genetic disorders in the United States has seen a notable increase in recent years, raising concerns about the nation’s health landscape. According to Global Genes, rare diseases impact one in every ten Americans, suggesting that approximately 30 million people in the United States alone are affected. This statistic underscores the urgent need for innovative medical solutions to address these rare conditions. However, the lengthy and costly approval processes of the Food and Drug Administration (FDA) create significant […]

Endangered Species Ethics

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Endangered Species: Gila Woodpecker

Words: 725 Pages: 2 5354

The Gila Woodpecker is one of many types of woodpeckers. This bird has an average lifetime of 10 years and the females tend to lay 3-5 eggs (1). The highest population density of the woodpecker is in the Sonoran Desert. Their water is scarce, and they are hunted by different types of animals. The main predators include a fox, bobcat, and coyote(2). The Gila Woodpecker is one of the most innovative birds. They use their long beaks to create small […]

Endangered Species Environmental Impact Nature

Conservation Challenges and Strategies for the Puerto Rican Parrot

Words: 2635 Pages: 9 5579

Introduction The conservation of critically endangered species presents complex challenges that require evidence-based, multifaceted approaches for successful outcomes. This study examines the comprehensive recovery efforts for the Puerto Rican Parrot (Amazona vittata), with particular focus on the spatiotemporal, social, and habitat use dynamics of the reintroduced population in Rio Abajo. As the only endemic psittacine species remaining within the United States and its territories, this species provides crucial insights into the effectiveness of intensive conservation strategies for island ecosystems. Background […]

Animals Endangered Species Nature

The Rich Tapestry of Texas Environments

Words: 665 Pages: 2 5569

Texas, a state renowned for its vast and varied landscapes, offers a unique blend of natural wonders, from dense woods to arid deserts. Each environment is like a rare jewel, waiting to be discovered and cherished. Among these treasures is the Meadows Center, where the glass-bottom boat tour provides an unparalleled opportunity to explore the serene beauty of Spring Lake. This tour is not only a journey through a remarkable nature park but also a profound educational experience that highlights […]

Animal Welfare Animals Endangered Species

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