1. Cells perform many different processes that an organism needs to survive and grow. Which is the MAIN function of the process of cellular
respiration?
O A. the production of sugar
O B. the release of energy
C. the formation of new proteins for the cell
D. the removal of waste products from the cell

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

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

Select the correct answer. which term do biologists use to describe the average number of individuals of a species per unit area? a. carrying capacity b. population density c. minimal viable population d. survivability curve