I NEED HELP THE 1ST 1 IDK IF ITS RIGHT I JUST ACIDENTLY CLICKED IT SO I THINK ITS NOT RIGHT AND THE 2ND 1 DO NOT USE G O O G L E PLS USE UR OWN WORDS PLS AND THANK YOU ILL MARK BRAINLIEST

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

Explain why the plants cortex would serve as the best food source for animals

Where in the cell are ribosomes made?