The function of eukaryotes membranes include
_____ barriers separating extracellular and intracellular environments.
_____ cell-to-cell adhesion.
_____ ATP synthesis.
_____ cell signaling.
_____ unselective transportation.
__X__ barriers separating extracellular and intracellular environments.
__X__ cell-to-cell adhesion.
_____ ATP synthesis.
__X__ cell signaling.
_____ unselective transportation.
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The phenomenon through which populations of organisms change over several generations is termed ______.
A. homeostasis B. growth and development C. reproduction D. biological evolution E. organization
What is the role of cleavage in the early embryo?
A. produce bigger cells B. produce many cells C. extrude polar bodies D. make the embryo larger E. create germ layers
Which of the following statements about cells is true?
A) All cells have cell walls. B) All cells have internal structures that move. C) All cells are attached to other cells. D) All cells are motile.
Which of the following represents the collective forces that move water upward in xylem?
a) root pressure b) gravity c) transpiration d) active transport e) translocation