Why is a system’s work output limited?
a. entropy decreases with each stage of a system, causing a decrease in available entropy to carry out each stage.
b. systems tend to become less randomized over time, which causes spontaneous processes to no longer occur.
c. energy is destroyed in each stage, causing the amount of available energy to decrease with each stage.
d. energy is lost as heat in each stage, causing the amount of energy available to decrease with each stage.

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

According to your text, should be in the native language of the parents or guardians whenever possible. a. an email b. consent forms c. oral approval d. storybooks loaned out

Which label identifies the part of the atp molecule that changes when energy is released in the cells of all living things