No it's an aquifer. trust me because the definition of aquifer is "permeable rock that contains groundwater"
When an individual muscle fiber receives a threshold stimulus, it contracts as much as possible. ... a threshold stimulus is the minimum amount of energy needed to make a muscle fiber contract.
Its the reverse
5'CGCTAA 3'
3'AATCGC 5'
Proteins in the cell membrane provide the structural support aspect. There are also channel proteins in the cell membrane that help substances pass through the cell membrane.
Hope this helps!! :)
