Because the oxygen rich and oxygen poor blood mix in the frog's heart, you would expect it to beat in order to deliver the same amount of oxygen as a human heart

[content deleted] - user123802726recklesschicken

answer; i believe the correct answer is (anemia);

it's the cell cycle, but cytokines is when the cell divides.

theres 3 stages interphase,mitosis,and cytokines.

interphase prepares the cell for division.

mitosis is the process of dividing the cell,it has 4 parts interphase,anaphase,metaphase,and telophase.

lastly there's cytokines,that's when the cell divides into 2 daughter cells

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.