Biology Essays & Term Papers

212 total

The Canadian Black Bear There are 8 kinds of bears (Ursus) in the world but I chose the North American Black bear (Ursus americanus). I will be covering general information about the bear such as their size, weight, color, food, etc., but I will concentrate mainly on the hibernating cycle of the black bear. There are from 400,000 to 750,00 black bears in North America, and they weigh from 130 to 660 pounds with a body length of 50 to 75 inches. Their colors vary from black, chocolate

EARTHWORMS Earthworms are classified as Annelida. Annelida mean little rings which refers to the many segments in their body. The structure of an earthworm’s body is made up of more than one hundred segments separated by partitions that divide the coelum. All segments are identical except by the anterior and posterior ends. The anterior segments reflect the cephalization that is an adaption of burrowing. The head of the earthworm contains the sense organs. The muscle lines that ma

INTRODUCTION Although sharks belong to the class Chondrichtyes, there are many different types. Sharks arose about 350 million years ago and have remained virtually unchanged for the past 70 million years and still comprise a dominant group. It is thought that sharks almost certainly evolved from placoderms, a group of primitive jawed fishes. It took a long series of successful and unsuccessful mutations with fin, jaw positions etc to give us all the different designs of sharks aro

Some people claim that dolphins and whales communicate in such a way that it is very similar to human speech. An analysis will be coucted to determine if there is more similarity or difference between these animals and humans. Dolphins are aquatic mammals closely related to whales. They aresleek and powerful swimers. They can be found in all seas around the world. It is interesting to point out that they spend about 99% of their time on the water. This affects their consiouness. It

Falconry is the upkeep of falcons. It is a very valued tradition in the UAE. Falconry is a sport that came to UAE many years ago. Poor people and rich people enjoyed it. It was a big part of their life in the desert. People think that it came by the muslim Arabs who went to Byzantine and Persia. The falcon is known as the Saqer. It is very loved by the people because of its beauty and lovely eyes. H.H. Sheikh Zayed Bin Sultan Al Nahyan loves falcons. Falconry is his favourite sport.

Dolphins are playful and cleverness make them fascinating to watch . Dolphins are not fish they are mammals that live in the sea . They have to come to the top of the water every half minute , so they can breathe . But dolphins can stay under the water for six or seven minutes ,if he holds his breath . The dolphin breathes in his head because he has a blow hole in his head that allows him to breathe . Dolphins have a lot of teeth to help them eat. Each dolphin has almost one hu

Golden Marmoset Golden marmosets, or Leontopithecus chrysomelas, have a mane derived from long hairs on the top of the head, cheeks and throat. The golden marmoset is predominantly black with golden to reddish-orange on the front of the mane, the lower half of the front paws and part of the tail. It weighs about 0.7 kg (1.5 lb). Golden marmosets prefer primary lowland tropical forest. They eat mostly insects and fruit and small vertebrates such as lizards and birds. The femal

Laminitis in Horses ABSTRACT: Laminitis is a painful and serious disease that can cause lameness in horses. It is an inflammation of the laminae. The Laminae is tissue that connects coffin bone and the wall of the hoof. Laminitis can occur in any horse, usually obese horses, and ponies. It is caused by changes of horses' feed, lush grass, retained placenta, intake of cold water while horse is still hot, surgery, trauma to the hoof, riding on hard ground. Key Words: Laminitis, Lam

Dogs chomp on more than four million people a year. Don¡¦t be one of them. Dog bites on the rise Megan Boger of La Belle, Pa., returned from shopping with her mother and ran into the yard to greet the family pet, a part-cocker mutt named Blaze. Seconds later, her mom, Elena Boger, heard a snap and then shrieks from three-year-old Megan. There was blood all over her face from tooth punctures under an eye and around her mouth, she recalls. Elena and her husband rushed their sobbin

Leigh Williams Alligators and Crocodiles Crocodiles and alligators are two reptiles that are often mistaken for each other. One of the most common questions alligator and crocodile researchers face today is what the differences are between the two. Although these reptiles favor in physical features, there are numerous differences. The first three differences between the alligator and crocodile are not in physical appearance. These differences are in their subfamilies, number of sp

In The Origin of Species, Charles Darwin poetically entailed, "There is grandeur in this view of life . . .." Personifying Nature as the ultimate breeder, Darwin infers and hypothesizes what is arguably the most fundamental and profound scientific manifesto that governs what we now know about modern science and the science of discovering our past. His two theories of Natural Selection and Sexual Selection effectively bridge the gap that his predecessors could not. These concepts are

A Frog is a small, tail less animal that has bulging eyes. Almost all frogs have long back legs. The strong hind legs make the frog able to leap farther than the length of its body. Frogs live on every continent except Antarctica, but tropical regions have the greatest number of species. Frogs are classified as amphibians. Most amphibians, including most frogs, spend part of their life as a water animal and part as a land animal. Frogs are related to toads, but are different from th

Foals: The First Year RUSTY MILLER STATEMENT DESCRIBING CAREER GOALS AND RESEARCH INTERESTS MASTERS IN ANIMAL SCIENCE AUGUST 1, 2000 RESEARCH INTERESTS AND BACKGROUND INFORMATION Introduction: The following is a report on my research information on foal’s nutritional need through there first year of life. This report will also show a research project that I would like to do for my Masters degree I. Nutrition A. Nutritional Requirement 1. Details of general nutrition 2. R

The Eastern Hellbender (Cryptobranchus alleganiensis alleganiensis) Cryptobranchus alleganiensis alleganiensis is the largest North American salamander, ranging in length from 30.5 to 74 cm (Niering 1985). Eastern Hellbenders are members of the order of tailed amphibians, Caudata and the family, Cryptobranchidae. Along with C. a. bishopi, the Ozark Hellbender, it is one of the two subspecies of hellbenders, also known as the Allegheny alligator or devil-dog. C. a. alleganiens

The reintroduction of Gray Wolves into Yellowstone has had many positive affects such as controlling the populations of large game and taking out the small week stupid ones. Some farmers complain about them killing cattle but who cares what they think. The gray wolf, also called the timber wolf, is the largest of about 41 wild species within the dog family, Canidae, of the order Carnivora. All living wolves are considered a single species, Canis lupus. There are 32 recognized subspe

Horses and How They Grow Horses are fun to ride, but they can be a lot of hard work. The first horse was the Eohippus. It was about the size of a fox. It can be traced over a period of 60 million years. From America they spread across the world. Then 8-10,000 years ago the horse be-came extinct in America. It was reintroduced by the Spanish Conquistadors in the 16th century. The herds of mustangs in north America is descended from horses introduced by the Spanish in the 16th cen

Honeybees as a Resource Honeybees are very useful to humans. As their name suggests, they make the sweet, delicious treat known as honey that we enjoy. They also make beeswax from which we make many useful items. But the most important thing bees do for us is to pollinate the plants. The honeybee visits flowers which secrete a sweet liquid called nectar. This water-like nectar is sipped from the blossoms by the bee and carried to the beehive. The raw nectar goes into the cells in alm

Invasion of the Zebra Mussels There has been an incursion into the sovereign territory of the United States of America. The Zebra mussel, an animal much akin to the clam, has colonized nearly every hard surface in the Great Lakes area, and many rivers and streams attached to them. These invaders arrived on ships from England, pumped out through the ballast. Zebra mussels are from a different environment (England), thus they are classified as an exotic species. These pesky animals thr

Pollution in our oceans is a serious problem. According to Marie Wild in her article “Ocean Pollution”, “Ocean pollution is one of the major killers of our sea animals.”. Most of the waste that is dumped is plastic, which takes hundreds of years to break down (Oceanic Research Foundation [ORF]). Everyday millions of animals are caught in fishing nets and six pack beer rings. It is thought that only fish are affected from getting caught in these. In reality they also kill birds

The Key Deer is a small species (in population and in stature) of deer that lives in the Florida Keys. It is in the same family as the Virginia white tailed deer. The Key Deer is about 26 inches tall and weigh an average of about 55 pounds. The males have antlers, and the antlers grow in cycles. They drop their antlers at the beginning of spring, and they grow back by June. The deer feed on indigenous plants including the red mangrove, the black mangrove, and the white mangrove. The K

Population estimation Introduction Estimates of population size play a vital role in many fisheries management decisions. The numbers of fish in a stock are used to identify influences of environmental factors, human exploitation, and ultimately to identify the effectiveness of management strategies. (Van Den Avyle & Hayward 1999) The three most common methods of population estimation among biologist are sample plots, mark and recapture, and removal. Counts on sample plots is based

Polar Bears “Saving the White Beast” The Polar Bear males can measure up to nine feet long, and can weigh 770-1430 lbs. The fur of the Polar Bear covers their entire body except their nose and pads of their feet. The Polar Bear (Ursus maritimus) is the largest living carnivore on the planet earth. (National Parks Service). The polar bear lives in a small place on the top of the globe called the Arctic Circle. At an average the polar bears have about five million square miles

Sea Turtles Each species of sea turtle is distinctive in appearance and behavior, all sea turtles have certain characteristics in common the shell consist of a carapace (upper part) and plastron (lower part), which are joined together by cartilage called a bridge. in most species with the exception of the leatherback scutes cover the carapace. Like all turtles sea turtles have no external ears, they hear best at low frequencies and their sense of smell is excellent. Though their visi

There are eight different species of bears found throughout the world: the spectacled bear, the Asiatic black bear, the brown bear (including grizzlies), the polar bear, the sun bear, the American black bear, the sloth bear and the giant panda. Even though most people can distinguish a polar bear from a brown bear by the color of the fur, a lot of people fail to identify all the differences among those two species. Both bears can be perceived as large, clumsy and lumbering

Spiders This report deals with testing the toxicity of certain chemicals on spiders, and determining the toxicity by how it affects it’s ability to weave it’s web. This report contains research on the four chemicals (benzedrine, chloral hydrate, caffeine, and alcohol) as wellas the spiders and their webs. Spiders are of course found in the class Arachnidia, which also contain mites, scorpions, and other arthropods. The order which spiders are classified under is called Araneae

Introduction Malaria is one of the most prevalent and dangerous diseases known to man. It has existed for centuries and affects a myriad of people in the tropical region. Even today, with our newly discovered treatments for many of the tropical diseases, over 10% of the people that are infected with malaria each year and do not receive proper treatment die. In Africa alone, over 1 million children die each year because of malaria and new cases are reported frequently. Malaria is very

MANTODEA Most commonly known as the Praying Mantis, order mantodea is a group of about 1800 carnivorous insects which prodominatley live in tropical regions of the earth. Though certain species can be found in locations with moderate climate. With an extremely striking appearence, mantids almost have human like qualities with the ability to hold an erect stance, and arms that face forward. A very efficient killer, mantids were created for hunting and killing prey. Order

Golden marmosets, or Leontopithecus chrysomelas, have a mane derived from long hairs on the top of the head, cheeks and throat. The golden marmoset is predominantly black with golden to reddish-orange on the front of the mane, the lower half of the front paws and part of the tail. It weighs about 0.7 kg (1.5 lb). They eat mostly insects and fruit and small vertebrates such as lizards and birds. The female usually gives birth to twins. The golden marmoset occurs in the Brazilian Atlan

For many reasons the human race could be called a blessing. Great advanced in technology, medicine and even the fact we are the most sophisticated species on the planet. Are we a gift to planet Earth, or far from it? With cast amounts of pollution and destruction of the planet, not to mention unthinkable acts of violence and hate that has been going on since the beginning of time. Are we really as sophisticated and important as we have led ourselves to believe? Are we any better than

Blue Whales The Blue whale is the largest creature of the sea; in fact, it’s the largest creature known to man. Contrary to what most people think, even though Blue whales live in the sea, they are mammals. They breathe air, have their babies born alive, and can live anywhere from 30 to 70 years. The Blue whale is a baleen whale, and instead of having teeth, Blue whales have around 300-400 baleen plates in their mouths. Baleen are rows of coarse, bristle-like fibers used to strain p

Leopard Frog - Rana Pipiens Distribution: Found throughout Ontario but more abundant in southern and central Americas. Range: Adults maintain small home ranges (up to 500 m2) in fields or open forest during the summer. Where terrestrial habitats are quite dry, home ranges include some shoreline. A minimum of 4 ha of terrestrial habitat is recommended for the vicinity of breeding sites, however, individual adults may move several kilometres away. Most recently metamorphosed froglets

Bioethics in Alodus Huxley s A Brave New World Biology is the science of living things, but with the advancements in the fields of technology many moral questions raise the eyebrows of the biologists all over the world. It used to be simple, observing organisms under a microscope, no harm is done. Now biology has expanded into many fields, filled with mines of morals ready to explode. The results of advancements are all around us today. There are the good: greater knowledge of organisms,

During the debate on March 15, 2000 which discussed new reproductive technologies (NRTS) issues were raised regarding the positive and negative effects of NRTS. Issues raised by the advocates of NRTS were surrounding infertility, homosexuality, disease, and cloning. All of these factors raised were concerning the moral rights of individuals who were unable to have children of their own without the help of NRTS. The debate continued by stating that denying individuals the right to utilize NRTS

BIOETHICS Progress in the pharmacological, medical and biological sciences involves experimentation on all living species, including animals and humans. The effectiveness of medications investigative procedures and treatments must at some point be tested on animals and human beings. Although tests are conducted much more frequently on lab animals, especially those most related to humans, they do not provide sufficient information. The history of medicine shows that there has always been a ne

Vincent Santoro February 25, 2001 Biology Honors Position Paper With the new technology in our present day culture, In Vitro Fertilization is a practice that I believe should not be done by any person by all means. IVF conflicts with the process of nature by bringing the sperm and egg together in an un-natural way, in a glass. Along with the un-natural aspects of IVF, there are many instances were this form of impregnation conflicts with moral, ethical and legal battles that may led

The wild turkey, the largest game bird in North America, is related to pheasants, quail, and grouse. It is found throughout the United States, except for Alaska, and in parts of Canada and Mexico. There are five recognized sub-species, which vary slightly, in color and size. The male wild turkey, called the tom or the gobbler, is a large robust bird weighing upt o 30 pounds and standing as high as four feet tall. His body color is brownish black with a metallic, iridescent sheen. The

Two outdoorsmen are out in the wild of the north. They are on a mission to deliver the body and coffin of a famous person. Their dogs disappear as they are entised by a she-wolf and eaten by the rest of the pack. They only have three rounds of ammunition left and Bill, one of the men, uses them to try to save one of their dogs that is being attacked; he misses and is eaten by the pack with the dog. Only Henry and two dogs are left; he makes a fire with leaves and scattered branches, t

Dolphins are one of the most beautiful animals in the word. Dolphins are mammals and are part of the Delphinidae family. This family contains various highly intelligent aquatic mammals. The name dolphin refers to the species that a have a beak like snout and a slender streamline body which helps them to swim at high speeds. Some species can swim up to speeds of 35 mph. Dolphins have a rubbery feeling skin that is hairless; this helps them swim through the water with little resistance.

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

Diet and Primate Evolution Variation in the choices of food on a daily, seasonal, and yearly basis is one of the greatest differences between primate species. Primate diets have generally been divided into three main food categories-fruit, leaves and fauna (including insects, spiders, and bird's eggs for the most part). The different diets also are referred to as Frugivores, Folivores, and Insectivores (fruits, leaves and insects respectively). These gross dietary categories are corr

Gorillas in the Mist Gorillas in the Mist by Dian Fossey is an excellent account of her thirteen years studying gorillas in the Virungas Mountains. Gorillas in the Mist shows the public that gorillas were not the evil monsters that we have come to think of them as. Through careful research Dain Fossey was able to bring an understanding to the eyes of the public about gorilla behavior, social structure, and the gorilla’s individualism. Dian Fossey started her research in Septembe