Tight junctions
a. are found in cells in connective tissues.
b. allow small, water-soluble molecules to pass from cell to cell.
c. are formed from claudins and occludins.
d. interact with the intermediate filaments inside the cell.

Which part of the neuron below is indicated by the arrow, and what is its function? hormones send chemical signals throughout the body to regulate other body processes. hormones are chemical signals that are sent throughout the body to regulate other body processes. hormones send electrical signals throughout the body to regulate other body processes. hormones are electrical signals that are sent throughout the body to regulate other body processes.

Which greenhouse gas is emitted when burn fossil fuels for energy? a.nitrogen b.oxygen c.carbon dioxide d.helium

Several billion years ago which gas was the least prevailant in the atmosphere