This blog is intended to extend your knowledge on the effects of DDT exposure on the human cell. The following link leads to a site that I found very helpful in my studies: http://www.chem.duke.edu/~jds/cruise_chem/pest/ddtup.html.
1. How does DDT get into the cells and why does this pose a threat?

2. What is the importance of Potassium and Sodium inside nerve cells?

3. Why is the leaking of Sodium and Potassium dangerous?

CELL COMMUNICATION

Cell communication is essential for all multicellular organisms. All of the billions of cells of a human must communicate in order to achieve everyday things like eating walking or talking. communication among cells is also key in unicellular organisms that need to communicate with other organisms to get food and mate.by studing cell communication we are helping to answer some of the most important questions in biology and medicine. it is allowing us to learn how cells communicate in areas like embryological development to hormone action to the development of cancer and other fatal diseases.

the signals recieved by cells can come from other cells or from some change in the organisms environment and can take various forms. cells can sense and respond to electromagnetic signals, such as light, and to mechanical senses, such as touch. however cells most used form of communication is through chemical signals. so it is essensial for ells to commuicate with each other in order to function properly

http://kentsimmons.uwinnipeg.ca/cm1504/cellcommunication.htm

1) what are some ways cells communicate and why is it important for them to communicate?

2) how could cell communication help in the study of fatal diseases like cancer?

3) what would be some effects of cells not being able to communicate with each other?

Alzheimer's Disease

Alzheimer's disease is a progressive, incurable and ultimately fatal form of dementia. The symptoms of Alzheimer's disease occur because of the loss of neurons. One of the key features of Alzheimer's is the presence of aggregated proteins, also called amyloid fibrils. These fibrils are made up of the A-beta protein, which can form the starting core for these clumps on the cell membrance which may lead to Alzheimer's.

http://www.livestrong.com/article/23368-alzheimers-cell-disease/

1.) One theory about how Alzheimer's develops is the ability of these amyloid fibrils to disrupt the internal workings of neurons. How do these fibrils destroy neurons, and why do the cells not rid themselves of these damaged proteins?
2.) Explain the process of Apoptosis and does this process help or eventually hurt neurons?

http://www.sciencedaily.com/releases/2010/06/100625124544.htm

1.) High levels of aneuploidy may result in developmental abnormalities and disease. Explain why this occurs, and what the outcome for the patient may be.