If the length of the absolute refractory period in cardiac muscle cells was the same as it is for skeletal muscle cells,
a) it would be much longer before cardiac cells could respond to a second stimulation
b) contractions would last as long as the refractory period pacemaker cells would cease to spontaneously depolarize
c) tetanic contractions might occur, which would stop the heart's pumping action

Acladogram is a branching diagram that represents suggested evolutionary relationships among organisms based on the presence of unique traits. a scientist discovers a new organism that lacks limbs and does not have a true backbone. the organism lays eggs to produce offspring and has a cartilage-like rod known as a notochord running along its dorsal surface. on the cladogram below, select the species to which the newly discovered organism is most closely related.

Competition occurs between species when

{answer found. it's (3 ) }which statement describes the cell cycle? (1)the cell cycle is a process in which one cell divides into four genetically different cells. (2)the cell cycle is a process in which one cell divides into two genetically different cells. (3)the cell cycle is a process in which one cell divides into two genetically identical cells. (4)the cell cycle is a process in which one cell divides into four genetically identical cells.