Find the number of species, immigration rate, and extinction rate on each of the island types using the MacArthur and Wilson island biogeography model. 1: Close and Small
2: Far and Small
3: Close and Large
4: Far and Large

Which of the following describe the role a biochemical pump plays in active transport? a it prevents water from moving across the cell membrane. b it uses energy to move materials across the cell membrane against the concentration gradient. c it large molecules cross the cell membrane without using energy. d it a cell move molecules from an area of higher concentration to an area of lower concentration.