It’s actually bacterial DNA
Answer:
All matter goes back into carbon dioxide, water, and minerals
Explanation:
Matter cannot be created or destroyed. There is a constant cycle of matter that repeats itself.
The kinetic energy of an object depends on both its mass and its speed. Kinetic energy increased as mass and speed are increased.
Uracil is found in RNA and not DNA. DNA instead has thymine
Answer:
<h2>
potassium</h2>
Explanation:
The heartbeats of the heart are controlled by the sinoatrial node also known as the pacemaker of the heart. The impulse is generated in the conducting cells of the pacemaker as a result of the movement of sodium, potassium and calcium ions.
The sodium channels allow the movement of sodium into the cell which depolarizes the membrane from -60mv to -40 mv. At this point, the calcium gated channels open which allow the entry of the calcium in the cell which depolarizes the cell up to +5mv.
At this point, the potassium channels open which allows the potassium ions to move out of the cell. This repolarizes the cell and hence the cycle again begins. Reducing the permeability of the potassium ions help generate the autorhythmicity due to repolarization and thus is the correct answer.
