The nuclear envelope functions as a __________.a. means of localization of the chromosomes within the cell. b. means of sequeste
ring many of the mRNA processing activities from the cytosol. selective barrier, allowing certain substances in or out. c. means of separating nuclear and cytoplasmic constituents. d. selective barrier that separates nuclear and cytoplasmic constituents, localizes chromosomes within the cell, and sequesters many of the mRNA processing activities from the cytosol.
1. electrical signals travel toward the heart. 2. signal received by the atrioventricular node. 3.signal by the nodes in the atrium. 4.the atria contracts. 5. signal transferred to the ventricles. 6. the ventricles contract.
