Which of the following statements about the nitrogen cycle is true? ammonification is the decomposition by bacteria of ammonia into nitrogen and hydrogen gases. the abundance of nitrogen is such that it is generally not a limiting factor upon the growth of an ecosystem. nitrification is the production by bacteria of nitrate from ammonia. denitrification is the removal and fixation by bacteria of nitrogen from the atmosphere?

When in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? view available hint(s)when in solution, a molecule that moves slowly across an artificial membrane moves rapidly across a plasma membrane. this molecule rapidly enters the cell regardless of whether its concentration is higher inside or outside the cell. using this information, which transport mechanism is most likely to be responsible for the movement of the molecule across a plasma membrane? active transportexocytosis