… cell It really depends on which cell you are talking about - different cells do different things. Such as skin cells. They form a barrier on the outside of the body which protects the organs and tissues inside. It stops them getting damaged by bumps…

… take the time to think about and consider each day. Taking a Biology course heightens your observation of things around you which are definitely aspects of biology. They are not only critical to us now, but will be critical for solving problems…

… system is made of glands that release their products into the bloodstream. There products broadcast messaged throughout the body. Hormones are chemicals that travel through the bloodstream and affect the activities of other cells. They bind to specific…

… done, it has become a very heated topic of debate, principally because of its ethical and moral concerns. Since the successful cloning of a six-year old sheep in 1997, human cloning has moved very close to becoming a reality. Like in any other issue,…

… Chagas disease is an infection caused by the parasite Trypanosoma cruzi. Worldwide, it is estimated that 16 to 18 million people are infected with Chagas disease; of those infected, 50,000 will die each year. Where is Chagas disease found? Chagas…

… conocido como el oido tiene dos funciones sensoriales, el balance y el escuchar o oir. El oido esta dividido en tres partes; el oido externo, el oido medio y el oido interno. Los primeros dos funcionan con aire y el último con fluidos…

… disposición de un sistema cardiovascular es vital para el desarrollo embrionario normal. Primero debe satisfacer las necesidades inmediatas del embrión durante las etapas del desarrollo, como por ejemplo, el abastecimiento…

… los sistemas vivos desde las plantas a los humanos muestran cambios periódicos. La atención de la mayoría de los investigadores de este campo se centra en los ritmos diarios - procesos circadianos. El…

… contributions to science, but the Moravian monk Gregor Mendel is one of these scientists. Mendel became a monk in a monastery that was filled with monks as dedicated to science as to prayer. From the monks, Mendel learned about the latest advances…

… Lateral Sclerosis (ALS) is a progressive incurable neuromuscular disease that attacks nerve cells and pathways in the brain and spinal cord. Motor neurons, among the largest of all nerve cells, reach from the brain to…