3 (I think, sorry if it’s wrong)
Answer:
Answer is Sinoatrial node, SA.
Explanation:
The sinoatrial node, SA, is known to be a group of cells which are found at the top of the heart.
The electrical signal that is initiated by the sinoatrial node bring about or stimulates the atria and then the ventricle of the heart.
It should be noted that, the sinoatrial node are regarded as the pacemaker cells.
I just took the test. The answer is climate
Answer:
the vesicle can fuse with a membrane prior to the exocytosis of a protein from the cell by hydrophobic.
Explanation:
i hope this works i have learned this yet