<span>The answer to this question would be: tissues; decrease
Oxygen is delivered to the tissue by the heart. It will be unloaded in the tissue, causing the oxygen level in the blood to be decreased. After that, the blood also picks up the carbon dioxide so its level will be increased.
In lungs, the carbon dioxide will be unloaded and oxygen will be loaded back into the blood.</span>
Answer:
Autorhythmicity of the heart
Explanation:
It is the study of the characteristics features of the cardiac muscle cells with the ability to initiate action potential at certain level without connection to any external stimulus which the heart beats constantly and rhythmically. Cardiac muscle cells controls the rate of contraction of heartbeats.
The answer is c mediastinum
Answer:
A
Explanation:
DNA must first be replicated before anything else occurs.
Answer:
False
Explanation:
Prokaryotes do not have a nucleus.
This means their DNA is not enclosed in a nucleus and instead is in the cytoplasm.
On the other hand, eukaryotes have nuclei, so their DNA is enclosed within a nucleus.
So, this statement is false.
