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Biology Subject Essay Examples

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Germs: Bacteria, Viruses, Fungi, and Protozoa

When an infected mosquito bites a human, some of its saliva, which contains spores of the parasite, is injected into the bloodstream. Once inside the body, Plasmodium infects liver cells and then red blood cells. Plasmodium grows rapidly within the infected cells and eventually causes these cells to burst at intervals of 48 or 72 hours. When millions of parasite-filled red blood cells burst, they ...

Chick Growth Enhancer

The observations in weight, growth, feathers and immune system was made weekly by the researchers. . A digital weighing scale was used to measure the weight while a tape measure was used to determine the growth. The chicks were observed as starters (4-10 days), growers (10-15 days), and finishers (15-21) days. The results obtained regarding performance of the broilers showed that Aloe Vera gel gro...

Never Let Me Go by Kazuo Ishiguro

You were brought into this world for a purpose, and your futures, all of them, have been decided (81). ” Real humans are brought into this world for a purpose and they have free will, not like these clones and it is not right. As a real human, clones should have a chance to choose as we all do. Later, when they were thirteen years old they were told that they will not going to be able to have ba...

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Wildlife Biologist

Wildlife Biologist." Animal Careers. About, N.p., n.d. Web. 19 Jan. 2013. "Wildlife Biologist, (discontinued)." OCCinfo. Allis Alberta, Feb. 03. Web. 18 Jan. 2013. "Wildlife Biologist." Welcome! N.p., n.d. Web. 18 Jan. 2013. “Wildlife in Black and White.” Africa is a Country. N.p., n.d. Web. 18 Jan. 2013 Wilson, Ellen. "How To: Become a Wildlife Biologist." Mata...

The Amoeba Falls

Being swallowed by the host it then implants itself in the stomach or throat. Leaving infection of the liver, lungs, and heart. When an amoeba is coming from another species it is normally a parasite. One infection is Amoebiasis, which is a gastrointestinal infection. These amoebas can lay dormant for a while undetected. Contracting this infection is done thru dirty hands, fecal-oral route, or eve...

Polar Bears

Hunting of polar bears as a food source by certain native people and trade in native handicrafts made from polar bears will also continue. However, importing polar bear products from Canada (where trophy hunting is legal) will be banned. Pollution from man-made kills polar bears also Use for humans past and present- pas was they were hunted for food and fur. Present still hunted but also hunted fo...

Cell Structure

One of the most common prokaryotic cells would be bacteria, they are the smallest cellular organism. It has no true nucleus but it does have a nucleiod region where its DNA is found. It has the flagella for movement on the outside along with the cilia. The cell membrane controls what goes in and out of the bacteria cell. The cell wall protects the bacterial cell and gives it its shape and structur...

Cell Organelle

Exceptional organisms have cells that do not include some organelles that might otherwise be considered universal to eukaryotes (such as mitochondria).[29] There are also occasional exceptions to the number of membranes surrounding organelles, listed in the tables below (e.g., some that are listed as double-membrane are sometimes found with single or triple membranes). In addition, the number of i...

The Tasmanian Tiger

The next step in the process is making copies of the genes so they can be used to make synthetic chromosomes. Once this step is accomplished, an embryo could then be implanted into a similar species, such as a Tasmanian devil. The effects of mixing the genes of these two breeds are unknown. In humans, very small errors in DNA can result in birth defects. So a frequently asked question is: if somet...

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