Answer:
A closed circulatory system is one in which blood flows though a system of blood vessels throughout the body.
Answer:
A hormone formed in the pancreas which promotes the breakdown of glycogen to glucose in the liver.
S phase
M phase (mitosis) is usually followed by cytokinesis. S phase is the period during which DNA replication occurs. The cell grows (more...) The duration of these cell cycle phases varies considerably in different kinds of cells.
The best answer would be B
