Answer:
1. False
2. True
3. True
4. False
Explanation:
In mammals, the contraction of the heart muscle is caused by pacemaker cells localized within the sinoatrial (SA) node. These cells rhythmically generate slow electrically-induced action potentials due to their slow rate of depolarization. The pacemaker cells generate the action potentials that propagate through the heart and trigger the contraction of myocyte cells (i.e., myocytes simply conduct the action potential waves). The slow depolarization of pacemaker cells occurs during diastole, i.e., during the period of relaxation of the heart muscle.
It may be c, if not you can punch me in the face.
<span>Tap water is one of the three test conditions of the independent variable, the type of water.</span>
The answer is c as mitosis is the division of cell into two daughter cells which also helps in the growth of body and also it helps to repair any wound and injury
