you are a astrobiologist who studies other planets for signs of lif you have discovered a unique subtance wich is made up of four metals organized in a specific and relatable pattern when exsposed to electromagnetic radiation this subtance becomes bigger and can produce multiple copies of itself if it is poked with a stickk it moves away from the stick if the subtance is keptin a dish for a while rust accumulates in the dish is it living or nonliving

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

Complete the possible outcomes for each generation in the pedigree chartaa aa aa

Nerve cells are specialized to respond to stimulitrue or false?