Upon their activation, receptor tyrosine kinases phosphorylate cytoplasmic substrate proteins, thereby altering
a. their ability to interact with other proteins within the cell
b. their localization
c. their actiity
d. all of the choices are correct

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. label the following topographic map. click on a label below the map to select it, and then click on the appropriate box on the map to place the label. (increments for contour lines is 50 ft).

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

Ture or false evidence for evolution includes millions of fossils