Which of the following statements about lysosomes is incorrect? a. the hydrolysis of atp to adp maintain the ph of the lysosome by means of proton transfer. b. if a lysosome encounters a molecule that it cannot digest, it is possible that it may fill with that material and rupture. c. they can degrade macromolecules such as proteins, carbohydrates, and lipids. d. lysosomes function in phagocytosis and autophagy. **e. they must maintain a ph of 7 in order to function properly.

Which sentence best expresses the differing opinions of these two book reviews?

Match the following terms describing electrical events with the correct phases of the cardiac cycle. the ventricular muscle cells depolarize at the start of this phase. during this phase, na+ entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. the ventricular muscle cells repolarize right before this phase. the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. a. isovolumetric relaxation b. ventricular ejection c. isovolumetric contraction d. ventricular filling

The human body needs energy in order to carry out life processes such as breathing. where does the body get this energy? a. from eating food b. from learning about new things c. from lying in the sun d. from sleeping