By: Janet Grischy
Apoptosis is a process leading to the death of a cell. The cell itself, surrounding cells, or the immune system bring about the death of a particular cell in order to protect the rest of the organism, or to promote its development. It differs from...
Do you think genetic altering is right or wrong?
By: Mark Morford
Who Loves Designer Vaginas?This just in: Science and nature are mocking America's fickle God. Please, no screaming.What are you gonna do about it?What are you gonna do about the fact that Mother Nature once again appears to be thwarting and mocking and...
The cell nucleus
By: Darian Peters
In eukaryotic cells, such as human cells, for example, the cell nucleus is the important organelle that houses the chromosomes. The chromosomes are the store of most of the genetic material of the cell (bar the mitochondrial DNA which is from a separate lineage). The...
Ribosomes: an explanation
By: Darian Peters
Ribosomes are a cellular component, that are not considered to be a true organelle because they lack a membrane, but are often referred to as a non-membranous organelle. They are found in the cytoplasm and are made of ribosomal RNA protein. Ribosomes, which are only...
Mitochondria defined
By: Darian Peters
Mitochondria are an organelle of many eukaryotic cells, such as human cells, for example. They can be thought of as the power plants of the cell because they produce most of the Adenosine TriPhosphate (ATP) used by the cell which is a key source of...
Biology: The Golgi apparatus
By: Darian Peters
The Golgi apparatus (also known as the dictyosome or Golgi body) is a cellular organelle that is to be found in many eukaryotic cells. Their main job is as a processing and packaging factory for the important macromolecules vital to cellular functioning like proteins and...
RNA defined
By: Darian Peters
RiboNucleic Acid (RNA) is the single stranded cousin of DeoxyriboNucleic Acid (DNA), the molecule of heredity which most people will be more familiar with. But RNA is also an important molecule in the normal functioning of a eukaryotic cell, like a human cell, and is...
Basic cellular anatomy and physiology
By: Angela Johnson - 491122
Studying the cell, the most basic unit of all life, was made possible was made possible by the invention and perfection of the microscope by Antoni van Leeuwenhoek and Robert Hooke in the early 1600s. After first observing the checkerboard-like structure of cork under a...
Genetic food modification: Animals
By: Robbie Wilson Engle
Ever since Robert Hooke first observed cork cells in 1665, biochemistry as well as our understanding for cells and genetics has come a very long way. In 1984 when the first brick' cell phones were just coming out, who would have thought that in just...
What are enzymes and what are they used for?
By: Nayab Sh
Enzymes are the catalysts or chemical substances synthesized in living cell and responsible for metabolic activities within the organism. Subatances which react with the help of enzymes are called "Substrates" and materials produced as the result of a chemical reaction are called "Products". Active sites...

 

1 11 12 13 14 15 33