Many molecules are moved through the body by . provide structure for plants. determine what people look like. cells are surrounded and protected by . speed up chemical reactions in the body. hemoglobin, a protein, is built b

An enzyme lowers the energy of activation. what does that mean?

Ryan rears sheep for their wool. recently the quantity of wool that ryan gets has diminished. this is because the new sheep are not that wooly. ryan should add which nutrient to their feed so that the sheep becomes more wooly? a. cornb. ironc. cottonseedd. vitamin a

About __ of the mass of the cell is water