Men having Babies
By: Sarah Howell
Women are able to have children because their bodies are able to stretch. When a women get pregnant all her organs naturally shift to cause room for the baby. A mans body is not build in such a way to do that. A women can...
By: Janet Grischy
Poison-oak is beautiful. In spring, its triple leaflets unfold with a delicate red tint. The smallest spring leaves are bronze. They enlarge as they open, to become a bright shiny green. At this stage, they really do resemble oak leaves, though the oak is not...
An overview of plant cell walls
By: Louis Rosenfeld
What differentiates plant cells from animal cells is that plant cells have a cell wall outside their plasma membrane. The cell wall protects plant cells and imparts stiffness to the plant, allowing it to grow tall. The composition of plant cell walls is mostly cellulose...
What is cryptozoology?
By: Tami Port MS
Literally translated, cryptozoology is the study of hidden animals. However, most mainstream scientists consider the majority of creatures that interest cryptozoologists to be so well hidden that they are, in fact, nonexistent. The legendary Bigfoot and Loch Ness Monster are two of the most highly...
Why do people breathe?
By: Louis Rosenfeld
You (and most other animals) breathe to exchange gases in your lungs. The cells in your body take in and use oxygen (O2) and they give off carbon dioxide (CO2). Oxygen constitutes about 20% of the air we breathe and is produced by plants and...
The basics of the stages of mitosis
By: Anne Parker
Your body's cells obviously can't live on forever, so they need to reproduce in order to keep your body and mind functioning properly. So how does your body replenish its cells? The answer is this: by an asexual reproduction process that is used by eukaryotic...
Prokaryotic cellular structure and function
By: Jon Clark
Simplicity is supposed to be genius so let's try and keep this simple - particularly for you folks out there who are amateur Biologists with a keen interest in the subject - good for you! Living things are made of cells - there are two...
Cell growth and division
By: Louis Rosenfeld
All living organisms are made from cells, the basic unit of biology. Cells are separated from their outside environment by a lipid and protein-containing membrane. The membrane acts to exchange nutrients from the outside and waste products from the inside of the cell. As the...
By: Janet Grischy
Prions are infectious proteins thought to cause disease as viruses do, though they lack the DNA or RNA that forms the command structure of a virus. Prions have been implicated in scrapie, kuru, Creutzfeldt-Jakob disease, and in Bovine Spongiform Encephalopathy (BSE), also known as Mad...
By: Erich Rosenberger M.D.
Embryogenesis is the process by which an embryo forms and grows in the uterus of a pregnant woman. The process of embryogenesis begins when an egg is fertilized by a sperm. After that, a massively complex sequence of events goes in motion. This process ultimately...

 

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