How does each cell accomplish a wide variety of activities?
a. the plasma membrane divides up the tasks.
b. all cell parts are similar.
c. molecules are transported in and out.
d. the organelles have specialized functions.

The many stone tools, fragmentary animal bones, and teeth found at gran dolina, spain, indicate that hominids there? a. processed and consumed animals and other hominids. b. did not differ appreciably from earlier asian homo erectus. c. were similar to later homo sapiens. d. none of the above