5 Put the following events in their correct order starting with the first one listed: atria fill with blood, semi-lunar valves close, tricuspid and bicuspid valves close,
ventricles contract, semi-lunar valves open, atria contract, ventricles relax, tricuspid and
bicuspid valves open

What are the four basic classes of organic molecules how do they differ structurally and functionally

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?

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