Cells Journal 4 and 5

There are many types of eukaryotes cells, with the animal and plant cells to be the most familiar cells.


Animal Cells:
1)Nucleus consists of nucleus pore ,nucleus envelope,chromatin and nucleolus.Function of nucleus:Store and contain genetic information(DNA) of the cell that passes down from one generation to another. Exception: the red blood cell has no nucleus and does not live very long.

2)Plasma membrane. Function: It encloses the cells, allowing only water and nutrients to be admitted into the cells and wastes are expelled out of the cells through the membrane.

3)Cytoplasm. Function: It allows molecules to move around within the cell, full of chemicals like: dissolved oxygen and/or carbon dioxide, amino acids, simple sugars and many more.

4)Ribosomes.(Found in cytoplasm) Function: It does protein synthesis.

5)Mitochondria: They release energy using oxygen during respiration.


Plant Cells:
1)Nucleus consists of nucleus pore ,nucleus envelope,chromatin and nucleolus.Function of nucleus:Store and contain genetic information(DNA) of the cell that passes down from one generation to another. Exception: the red blood cell has no nucleus and does not live very long.

2)Plasma membrane. Function: It encloses the cells, allowing only water and nutrients to be admitted into the cells and wastes are expelled out of the cells through the membrane.

3)Cytoplasm. Function: It allows molecules to move around within the cell, full of chemicals like: dissolved oxygen and/or carbon dioxide, amino acids, simple sugars and many more.

4)Ribosomes. Function: It does protein synthesis.

5)Vacuole: It may hold water, food, or wastes -- whatever the cell is storing or transporting.

6) Mitochondria: They release energy using oxygen during respiration.

7)Chloroplasts: They do photosynthesis using carbon dioxide ,water and sunlight.

Look for the 2 videos below for more graphics pictures and more details of the cells not listed above.






Special acknowledgement to
1)Wikipedia for photos of cells and information (http://en.wikipedia.org/wiki/Eukaryotes)

2)The Kingdom of Life (http://www.earthlife.net/kingdom.html)

3)Youtube for videos(http://www.youtube.com/watch?v=wOe-uLJg6Og&eurl=http://biologyjournnal.blogspot.com/)
(http://www.youtube.com/watch?v=Zi-DdHkMCP8&eurl=http://biologyjournnal.blogspot.com/)

4)World Builders (http://curriculum.calstatela.edu/courses/builders/lessons/less/les4/euk-and_pro.html)

Glossary

1)Helicobacter pylori :a micro-organism that looked like a corkscrew.(see Barry James Part2 picture)

2)Gastric cancer:a type of cancer that got to do with stomach(also known as stomach cancer)

3)gastroenterologist :the study of the structure, functions, and diseases of digestive organs.

4)peptic ulcer: an erosion of the mucous membrane of the lower esophagus, stomach, or duodenum, caused in part by the corrosive action of the gastric juice.


Special acknowledgement to:1)Dictionary.com
for providing the meaning of peptic cancer and gastroenterologist(http://dictionary.reference.com/)

Barry James Marshall( Part 3)

He discovered the bacterium Helicobacter pylori and how it causes gastritis and peptic ulcer disease world wide. His discovery illuminated the patterns of helicobacter infection in different populations around the world. In the more developed countries ,which has more pure and clean water, the rate of getting gastritis and peptic ulcer is declining. However, in the less developed countries, the problem still largely persists .Thanks to Marshall’s hard work, Helicobacter pylori is now recognised as a important factor of the stomach cancer. His discoveries freed millions of people worldwide from the suffering of gastritis and peptic ulcer disease!






Special acknowledgement to1)Wikipedia(http://en.wikipedia.org/wiki/Barry_Marshall)
2)Academy of Achievement(http://www.achievement.org/autodoc/page/mar1bio-1)
3)Academy of achievement(http://www.achievement.org/achievers/mar1/photos/mar1-002a.gif)

Barry James Marshall( Part 2)

Barry James Marshall has certain qualities and attitudes that make him a successful biologist, such as creative ,perseverance, ability to work in a team.

Perseverance: He did not give up the thought that H.pylori is the cause of most peptic ulcer and gastric cancer despite the fact that other scientists disagree with him.
Creative: After he had failed to infect piglets with bacteria, he drank a petri- dish of bacteria and developed gastritis so as to find out if his stomach reveal any bacteria.

Ability to work in a team: He ,together with his partner Robbin Warner , performed the initial culture of H. pylori and developed their hypothesis related to the bacterial cause of peptic ulcer and gastric cancer and proved that H. pylori is the cause of gastric.

All of this attitudes make him what he is today, a successful biologist!



Special acknowledgement to:1)Wikipedia (http://en.wikipedia.org/wiki/Barry_Marshall)
2)Academy of Achievement (http://www.achievement.org/autodoc/page/mar1bio-1)
3)Academy of Achievement for picture ( http://www.achievement.org/autodoc/photocredit/achievers/mar1-006)