If molecules move from one place to another inside of a cell, which type of communication is this?

a. intracellular, molecular signal.

b. intercellular, gap junction.

c. intracellular, enzyme-linked receptor.

d. intercellular, ion channel-linked receptor.

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it

The melting point of sulfur is 115 °c and its boiling point is 445 °c. what state would sulfur be in at 200 °c?