Glucose (c6h12o6) can exist as both an open-chain form and a closed-ring form. before 1900, glucose was only thought to occur as an open chain. now we know that over 99 percent of the time, glucose occurs in the closed-ring form. what possible difference between these forms would give chemists a clue that the open-chain form was not present?

Does masterbation affect height growth or loss of growth hormone?

Aperson with age is more likely to catch diseases that healthy people usually don’t catch.what are these infections called?

How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.