How many types of essential amino acids do humans require from their diets?

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

Ais a group of individuals of the same that exist together in the same place at the same time

2. how does the miller-urey experiment fall short of demonstrating that life can arise from inorganic molecules? explain. a. it doesn't show a leap between a collection of amino acids and a single-celled organism. b. it recreates the conditions that existed at the earth's beginning, but no molecules form as a result. c. it doesn't provide evidence of the formation of amino acids. d. it doesn't show how multicellular organisms developed from unicellular organisms