Cell Essays

Without the invention of the microscope, the cell theory would not have been possible In my opinion, the establishment of cell theory as the predominant scientific theory regarding the organization of life hinged heavily on the invention of the microscope. While it is not entirely impossible for cell theory to …

This is a summary of the article titled “Ethical stem cells stripped of ‘cancer’ genes” found at New Scientist.  The article revolves a new method of successfully generating “ethical” stem cells by two teams at the University of Edinburgh and the Samuel Lunenfeld Institute at Toronto’s Mount Sinai Hospital. Stem …

Introduction Sickle cell is one of the most prevalence genetic diseases in the United States. The disease affects more than 70,000 people and it is estimated than more than 2 million people carry the trait for the disease.  Like many disease like Diabetes, high blood pressure and others, sickle cell …

Someone you care about is suffering from heart disease, juvenile diabetes, Alzheimer’s, or even forms of cancer and the only hope may be through stem cell research. Would, or should, you support this study? You, like many researchers and scientists, should have great hope for stem cells and its ability …

The pancreas is a dual-function gland, having features of both endocrine and exocrine glands. The part of the pancreas with endocrine function is made up of approximately a million[3] cell clusters called islets of Langerhans. Four main cell types exist in the islets. They are relatively difficult to distinguish using …

T-cells, which belong to a group of white blood cells known as lymphocytes, play a vital role in cell mediated immunity. They differ from other lymphocyte types, such as B-cells and Natural Killer NK cells by the presence of the T-cell receptor (TCR). T cells are called as such because …

Diffusion is when substances spread throughout a liquid or a gas (high to low). Osmosis is the diffusion of water through a selectively permeable membrane (a type of diffusion). In plant cells it is also referred to as plasmolysis. Plasmolysis affects the cells ability to work properly (homeostasis). Plant cells …

The reason that embryonic stem cell researchers are agitating for taxpayer money is that their private funding has dried up. Private investors and venture capitalists are not investing in embryonic stem cell research because they perceive it to be a pipe dream unlikely to produce any progress and, hence, investment …

Introduction             In 1981, a cluster of cases of Pneumocytis pneumonia appeared in the Los Angeles area. This extremely rare disease was usually seen only in persons who were immunosuppressed. Investigators soon correlated the appearance of this disease with an unusual incidence of a rare form of cancer of the …

1.)What is Osmosis? Osmosis is the diffusion of the movement of water from a region of higher concentration to a region of lower concentration through a cell membrane or other semi-permeable membrane until an equilibrium is reached. It is a special case of diffusion (passive transport). Basic Explanation : Osmosis …