A protein similar to the human Rh blood factor (which is due to a specific set of genes) can be found in many animals. In which of the following is it least likely to be found?
A) chimpanzees
B) goats
C) dogs
D) parrots
D
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A rigid cell wall made of chitin surrounds the cells of most fungi
1.True 2.False
Which process is the driving force behind the movement of xylem sap upward through the tracheids and vessels in xylem?
1.Bulk flow 2.Osmosis 3.Plasmolysis 4.Transpiration
Which of the following is (are) specialization(s) that
evolved in land plants that was (were) unnecessary in their aquatic ancestors? a. xylem b. phloem c. stomata d. roots e. all of these
If blood transports hormones throughout the body, how do they communicate with specific targets?
A. Axonal pathfinding mediates the delivery of hormones to their specific targets. B. Special gateway valves in the blood vessels direct hormones to their target tissues. C. Only target tissues have receptors that allow them to receive the signal. D. Special carrier proteins "walk" along microtubule tracts to deliver the hormones to their targets.