Once a month jason experiences a headache that is severe, lasts 6-8 hours, and is accompanied by vomiting and extreme sensitivity to light. he most likely has which type of headache?

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.

Which of the following forest management practices is best for reestablishing areas of forest?

Which structure in the cardiovascular system connect arteries to veins?