Question 1
Mechanisms that move substances across membranes against concentration gradients are
◦ calcium ions in the calcium pump.
◦ membrane pumps.
◦ ATP molecules.
◦ passive transport.
◦ facilitated diffusion.
Question 2
Most ATP is formed by the process of
◦ glycogenolysis.
◦ phosphorylation.
◦ cellular respiration.
◦ fermentation.
◦ anaerobic respiration.