Answer:
An ion channel, more specifically a calcium channel.
Explanation:
The electrical activity of the cells is regulated by ion channels. Calcium channels, also referred as the voltage-gated calcium channels constitute one group of a superfamily of ion channels. A change in voltage across the membrane or small molecules triggers calcium channels to open, allowing calcium to flow into the cell. Inside the cell, calcium acts as a second messenger, it binds to calcium sensitive proteins to induce different responses and support several functions such as muscle contraction, hormone and neurotransmitter secretion, gene regulation, activation of other ion channels, control of action potentials, cell survival, etc.
Answer:
This formula contains 12 oxygen atoms.
The answer is A. In case you wanted to know, the actual answer is 4.184. If anything is unclear, just ask!
molecule- when two or more of the same atoms of an element chemically join together
ex: O2
compund- when the two types of atoms are different
ex: H2O
i think it is carbon monoxide
