Bacterial cells are Prokaryotic cells. These cells have several internal structures and surface structures. The cell walls are of two types‚ gram positive and gram negative. Out of all the structures‚ the two selected structures are the cell- wall and endospores. The cell- wall of bacterial cells is found in three distinct shapes such as spherical‚ spiral and rod shaped. The cell wall of the bacterial cells is composed of the proteins and polysaccharides. This is collectively called peptidoglycan
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characteristics of a healthy cell and a cancer cell is very different. Healthy cells stop reproducing when there are enough cells‚ however‚ cancer cells continue to reproduce. Due to this continued growth a tumor‚ which is a cluster of cancer cells‚ is formed. Cancer cells do not interact with other cells like the healthy cells. Healthy cells stop growing when they hear signals from the nearby cells‚ in contrast‚ cancer cells do not respond to these signals. When healthy cells get old or damaged they
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Crohn ’s disease is named after Burrill B. Crohn‚ the physician who described the disease in a paper written in 1972. Crohn ’s disease can also be referred to as Morbus Crohn ’s‚ Granulomatous Enteritis‚ Regional Enteritis‚ or Terminal Ileitis. Attacks of Crohn ’s disease may affect patients in their teens or early twenties‚ and tend to recur throughout the individual ’s life. The History of Crohn ’s Disease Crohn ’s disease is an inflammatory bowel disease of an undetermined cause that afflicts
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the body and cause infection and inflammation. The skin tissues in the infected area become red‚ hot‚ irritated‚ and painful. Risk factors for cellulitis include: • Cracks or peeling skin between the toes • History of peripheral vascular disease • Injury or trauma with a break in the skin (skin wounds) • Insect bites and stings‚ animal bites‚ or human bites • Ulcers from diabetes or a blockage in the blood supply (ischemia) • Use of corticosteroid medications or medications
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a) Using a human cell of your choice‚ describe how organelles work together to make and secrete a protein (LO1. AC 1.1) An epithelial cell in the thyroid gland‚ called a thyrocyte forms spherical follicles that produce a protein called thyroglobulin. This is a globular protein that has a functional role in metabolism. The protein is used by the thyroid gland to produce thyroid hormones; thyroxine (T4) is an example of one of the hormones created. Thyroxine is formed by iodine binding to tyrosine
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A Short Summary of Crohn’s Disease (Inflammatory Bowel Disease) Epidemiology • Age of onset: 15-30 and 60-80 • Equal incidence between males and females • Jewish>White Caucasian>African Americans>Hispanic>Asians • Ashkenazi Jews risk is 2x that of an Israeli born Jew. • Urban areas>Rural areas • High socioeconomic > low socioeconomic classes Causes 1. Immune mediated • Pro-inflammatory>Anti-inflammatory • T-helper cells activation through cytokines to promote fibrinogenesis
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Behcet’s syndrome also known as Behcet’s disease causes inflammation of the blood vessels as well as other parts of the body. This disease was named after the Turkish dermatologist‚ Dr. Hulusi Behcet who first discovered it in 1937. His original description of this disease is a triad of oral ulcers‚ genital ulcers and ocular inflammation. This disease is currently recognized worldwide but the countries with the highest prevalence rate are Turkey‚ Japan‚ Korea‚ China‚ Iran and Saudi Arabia. Turkey
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though a cell is the basic unit of an organism it can be pretty complex inside of one. So why don’t we try and make it a little simpler by comparing it to something we’re all more comfortable with? Take Disneyland for example! Everyone is familiar with Disneyland and how it works. Let’s see just how similar these two can be. First‚ would be the entrance gate. The entrance gate could be our cytoplasm. Cytoplasm is the jelly-like fluid that fills a cell and inside is all the other cell organelles
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Menusha Arumugam (K1) NAME OF DISEASES Malaria PATHOGENS & VECTORS A parasite called Plasmodium‚ which is transmitted via the bites of infected mosquitoes There are four types of human malaria: - Plasmodium falciparum - Plasmodium vivax - Plasmodium malariae - Plasmodium ovale Plasmodium falciparum and Plasmodium vivax are the most common. Plasmodium falciparum is the most deadly. METHOD OF TRANSMISSION - Through the bites of infected Anopheles mosquitoes - They breed in shallow collections
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The cells of the adaptive immune system are special types of leukocytes‚ called lymphocytes. There are two main types of lymphocytes‚ B cells and T cells‚ which are derived from hematopoietic stem cells in the bone marrow. T cells are involved in cell-mediated immune response‚ whereas B cells are involved in the humoral immune response. The surface of each lymphatic cell has receptors that enable them to recognize foreign substances. There are two major subtypes of T cells: the helper T cell and
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