Heliotropism (like sunflowers)
Answer:
Gap junctions within the intercalated disks
Explanation: Gap junctions within the intercalated disks allow impulses to be propagated from one cardiac muscle cell to another. It allows sodium, potassium, and calcium ions to flow between adjacent cells, propagating the action potential, and ensuring coordinated contractions.
I think the best answer from the choices listed above is option A. Meiosis and Mitosis have something in common in a sense that they are considered to be reduction divisions as the processes result in additional <span>cells. Hope this answers the question.</span>
Answer:
Mechanical barriers — which include the skin , mucous membranes , and fluids such as tears and urine — physically block pathogens from entering the body. Chemical barriers — such as enzymes in sweat , saliva , and semen — kill pathogens on body surfaces.
