Pretty sure the answer is potassium. Hope that helps:)
A tonoplast is a membrane that surrounds the vacuole of a plant cell.
The slender filaments under the mushroom cap are called hyphae.
Cranial nerves arise from the brain and brain stem while the spinal nerves arise from the spinal cord. There are 12 pairs of cranial nerves that pass through the foramine found in the skull and named as CN I to CN XII. 20 bundles of nerve fibers pass through the hole of olfactory foramina and makes the olfactory nerves or Cranial Nerve I (CN I).