Small openings in the epidermis of a leaf called guard cells allow water and other materials to enter and exit the leaf. true or false

Is it considered muscle s ennervation if sympathetic fibers innervate the vessels within the muscle?

What is used to keep track of the gamates and possible offsprings combination

How are proteins and nucleic acids related? they both provide energy. they both carry genetic information. the structure of proteins is determined by nucleic acids. the subunits of nucleic acids are also the subunits of proteins.