A 46 year old male sat down hard on a bench banging the lower part of his head against the rail behind. There was a large “goose-egg” on his head and lots of pain. He developed a headache from the injury but felt better within a couple of hours and […]

A 46 year old male sat down hard on a bench banging the lower part of his head against the rail behind. There was a large “goose-egg” on his head and lots of pain. He developed a headache from the injury but felt better within a couple of hours and […]

Methods for Assaying/Detecting Viruses Write a paragraph to teach to the rest of the class one of the following techniques used to assay/detect a virus. Do not select a technique already chosen by another student. Describe briefly how the technique you select detects a virus. What are the advantages/disadvantages/limitations of […]

In the mid-seventeenth century, Dutch scientist Jan Baptista van Helmont struggled to understand where plants get the material that allows them to grow larger. He planted a willow tree of a given weight in a ?xed quantity of soil and then, ?ve years later, weighed both the willow and the […]