Which statement is true of diffusion?

a: molecules move from areas of high concentration to areas of low concentration.

b: diffusion requires energy input from the cell.

c: only water can diffuse across a cell membrane.

d: diffusion is only important for animal cells.

What initially causes a nerve impulse? release of enzymes out of the neuron movement of chemicals into the dendrites of the neuron pathogens attacking the dendrites of the neuron red blood cells bathing the neuron

The equation shows cellular respiration. during cellular respiration, glucose combines with oxygen to form carbon dioxide, water, and atp. what happens to the energy in the bonds in glucose? the energy is transferred to oxygen. the energy is transferred to carbon dioxide. the energy is transferred to water. the energy is transferred to atp.

Amines amides and amino acids are categories of