One of the proteins made and released by a cell is compared to the protein taken
from the same cell's endoplasmic reticulum. The two proteins are slightly different
What likely occurred?
The cell membrane changed the structure of the protein,
The cell digested the protein in the lysosome before releasing it.
The cell modified the protein in the Golgi apparatus.
The cell used part of the protein in the mitochondrion.

Humans are believed to have evolved in coastal regions in east africa. the region had an abundant supply of fish for early humanoids to eat. when scientists analyze the fads gene they see an interesting pattern. people whose families have lived in this area of east africa for generation show a high level of diversity in alleles for the fads gene. conversely, people whose families had migrated inland a moderate distance from sources of fish showed a much lower diversity for fads gene alleles. additionally, the fads alleles found in people whose family has lived inland for generation are almost all gene alleles which produce fads proteins with a high level of function and activity. how do anthropologists explain this?

The bacteria inside a tube worm would be analogous to what organism in the ocean ecosystem near the waters surface? a. photosynthetic algae b. shrimp c. clown fish d. parasitic lamprey

Which feature would you expect to find in a population in which sexual selection depends on male competition?