Biology

204 total

Lavar McCullough February 11, 2000 Essay #2 Wilderness Ethics Wildlife can be found all over the world. Animals come in all shapes and sizes and some still haven’t even been accounted for. Animals were on this planet long before man, but they may not be here when man leaves. The animals’ downfall results from the extensive studying, exploitation, and the destruction of their habitats, which should be against the law. There is a lot of information that can still be learned ab

White tigers are an endangered species and it is said that less than a dozen have been seen in India in about a hundred years. In fact no sightings have been reported since 1951. This may be caused by the fact that the Royal Bengal tiger population has dropped from 40,000 to 1,800 in the past ten years and as few as one in every 10,000 tigers is white (www.cranes.org/whitetiger). White tigers are neither albinos nor a special species. They differ from the normally colored tigers by h

The “cry of the wild” can still be heard across this great land. I have heard the bugle of an elk on the Great Plains...the shrill of a bald eagle along the banks of the mightily Mississippi...the roar of a brown eagle bear on windswept tundra...and the gobble of a wild turkey among western foothills. Amazing beauty can still be found in the natural landscapes of this great land. I have seen through televisions, articles, books, and newspapers the towering forests...pristine waters.

Some of our sore throats are caused by a "strep infection" – and this bacteria can be spread to your cockatiel from a sneeze or a cough. A bacterium called E. coli is normally present in our intestines, but it is not a normal resident in the intestines of cockatiels. So be sure that you wash your hands after using the toilet and before handling your cockatiel or its food. Seeds, how do you know if they are alive and nutritious? Sprout them! If less than 75 % of the seeds sprout, th

Are Viruses Alive? By Bo Howes The word virus means “poi-son” in Latin. Viruses are submicro-scopic intracellular parasites that consist of either RNA or DNA, and a protective coat of protein. It has caused countless diseases in vari-ous organisms. The term virus was first used in the 1890s to describe agents that caused diseases that were smaller than bacteria. The ex-istence of viruses was established in 1892, when Russian scientist Dimity I. Ivanovsky discovered microsc

Chlamydia trachomatis What is Chlamydia trachomatis? Chlamydia trachomatis is a small bacterium that cannot grow outside a living cell. In this respect it resembles a virus, but it is actually a very sophisticated organism. There are two other related organisms: Chlamydia psittaci is widespread in animals and can be transmitted to humans. This organism in humans is an uncommon cause of severe pneumonia particularly when acquired from infected birds of the parrot (Psittacine) fam

The Biological Revolution The year is 2025, parents can now ensure that their children will not be prone to addictions, mental illness and are even resistant to AIDS. Diseases are considered a burden of previous generations. Even the process of aging can be manipulated to suit man. No longer will people worry about looking or feeling old. Science has now found a way around the clock. Human genetic engineering, which is just fiction now may not remain fiction in the future. Recently the multi-

November 16, 1995 Hundreds of thousands of times a year a single-celled zygote, smaller than a grain of sand, transforms into an amazingly complex network of cells, a newborn infant. Through cellular differentiation and growth, this process is completed with precision time and time again, but very rarely a mistake in the "blueprint" of growth and development does occur. Following is a description of how the pathways of this intricate web are followed and the mistakes which happen when t

Diseases of Animals, are disorders that influence an animal's health and ability to function. Animal diseases are a great concern to humans for several reasons. They can reduce the productivity of animals used to produce food, such as hens and dairy cows. Animals that are raised for food, such as pigs and beef cattle, that become ill may affect the economy of many industries. Some animal diseases can be transmitted to humans, and control of these types of diseases, known as zoonoses, is vi

Beginning about 12,000 years ago, the human population began a trend that completely changed the way we, as a race, evolved. For the first time in history, humans pushed beyond the restraints of traditional hunting and gathering, into domestication and farming. It was a change that would not only take thousands of years to prove worthy, but also may have set us back on the evolutionary path at the time. Along the path to this point, we have been constantly changing and finding new way