Wild type e. coli can synthesize all 20 common amino acids, but some mutants, called amino acid auxotrophs, are unable to synthesize a specific amino acid and require its addition to the culture medium for optimal growth. Besides their role is protein sythesis, some amino acids are also precursers for […]

Ocean Systems According to the law of conservation of energy, energy cannot be created or destroyed, but it can change from one form to another 1. A boy doing a cannonball into the pool. He went from potential to kinetic energy, where did his kinetic energy go? 2. A plant […]

Cardiovascular, Cellular, and Hematologic Disorders – Case Study Part One: INITIAL HISTORY: Tom is a 47 year old male who presents with gradual onset of dyspnea on exertion and fatigue. He also complains of frequent dyspepsia with nausea and occasional epigastric pain. So far you only know that he has […]

The quest for the “Fountain of Youth” has long been a goal of both early explorers and modern scientists. It also driven a huge industry based on the premise that it’s possible to slow down, stop, or even reverse the process of aging. Choose one property of the human body […]