17. How do we get macromolecules and what do we use them for? A. food we eat / energy only
B. air we breathe / new cells and energy
C. air we breathe / energy only
D. food we eat / new cells and energy

Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation

What happens as electrons move along the chain of molecules known as the electron transport chain? they gain energy, which causes atp molecules to lose phosphate groups. they gain energy, which causes h *ions to join with oxygen to produce water. they lose energy, which is then used by the cell to make atp. they lose energy, which is then used to break down atp.

Kinases add - groups to other enzymes. this activities some enzyme while inhibiting other