Ever since human stem cells were first isolated, research on stem cells has received much public attention, both because of its extraordinary promise and because of relevant legal and ethical issues. Stem cells are self-renewing, unspecialized cells that can give rise to multiple types all of spec...

Blood is composed of cells and fluid, contain many inorganic and organic molecules. Functions of blood could be falls into three categories: transport, defense and regulation, they all have different function. Blood transport oxygen and nutrients and removes waste from the body. It also tran...

INTRODUCTION: The body is constituted of different types of cells which unite together to form contrary tissues. Tissues are a group of similar cells and their intercellular substance specialized to perform a specific function; primary tissue types of the body are epithelial, connective, muscle, an...

BLOODThe major transportation fluid1unit=.5litersFunctions1. Transportation medium for food and oxygen cells.2. Transport medium for waste and carbon dioxide from the cells.3. Movement of hormones, enzymes, immune cells and other chemicals throughout the body.4. Important in the regulation of body t...

Unit 2 Biology- FUNCTIONING ORGANISMSSAC-'Essay on transport systems'"Transport systems play an essential role in the survival of flowering plants and mammals"Transport systems play an essential role in the survival of flowering plants and mammals. These organisms rely entirely on the transport of w...

CIGARETTE SMOKING AND THE BODYTobacco is consumed worldwide everyday by millions of people. Many people cannot prevent themselves from smoking because tobacco contains a drug called nicotine that makes them feel as if they need it in order to function normally. Nicotine is a substance found in tobac...

AIDS: Past, Present, Future.With the 1980s many new things were introduced to Americans: Ronald Reagan,"Dukes of Hazard," and Atari were all brought about. With these new things camesomething completely different, something that was somewhat of a mystery at the time. Anew virus was spreadi...