Which statement best describes enzymes? A) They slow down the rate of breathing.
B) They are the building blocks of polymers.
C) They speed up the conduction of impulses along a nerve cell.
D) They influence the rate of chemical reactions.

In the context of the neural impulse, which of the following is true about the depolarization of neuron membranes?

Drag the tiles to the boxes to form correct pairs. match the causes with their effects cause: tectonic plates at transform boundaries experience friction. cause: tectonic plates at transform boundaries experience friction. cause: earth is covered by a crust that runs miles deep.

Does all the energy stored by the phytoplankton reach the top level of the pyramid