Viruses that attack bacteria are known as bacteriophages or phages. They consist of DNA surrounded by a protein coat. A long thread of DNA of about 150 genes is packed into a head from which a short tail projects. The phage attaches itself to the bacterial surface by its tail. ...

Risk Analysis of: Young Women Smoking By Louise Eccles Smoking is the number one preventable cause of death in women in the United States. Of the more than 140,000 women who die prematurely from tobacco-related illnesses each year, 80 percent began smoking ...

When the first zoos were established there were no nature programmes or films about wild animals, so people visited zoos to learn about them. Today, however, people are beginning to question whether we should still have zoos where wild animals are kept in cages for the amusement of the public. ...

Investigation of effect of resistance using an electrical current on wires Aim: I am going to be studying the resistance of wire. The purpose of this investigation is to see how length and thickness of wire affect the dependent variable, resistance. Prediction: ...

What is schizophrenia? Schizophrenia is a chronic and severe brain disorder. It is a disease that makes it difficult for a person to tell the difference between real and unreal experiences, to think logically, to have appropriate emotional responses to others, and to behave appropriately ...