Ascientist discovers a new chemical in the leaves of a rare tropical plant. when trying to determine the role of the chemical, the scientist determined that it is not a structural part of the plant's cells or a pigment that contributes to the color of the plant's leaves. she was able to learn that the chemical sped up a particular chemical reaction involving the plant's metabolism. based on this information, the new chemical is a (an)

Which codon is the code for the amino acid histidine (his)?

What is the difference between the conducting zone and the respiratory zone of the respiratory system? the conducting zone is a series of cavities and tubes that move air to the respiratory zone where gases exchange with the bloodstream. the conducting zone exchanges gases between the lungs and the alveoli and the respiratory zone is a series of cavities and tubes that move air to the conducting zone. the conducting zone moves oxygen into the cells and the respiratory zone takes carbon dioxide away from the cells. the conducting zone moves oxygen into the bloodstream and the respiratory zone takes carbon dioxide away from the bloodstream.

Whats one way that rocks do not follow the typical rock cycle pathway?