2. Suppose the Earth were flat, and the stars really were attached to a sphere that spun around the Earth. Think about travelling north until you were directly under Polaris. Would you expect
the same motions of the stars that someone at the north pole of a spherical Earth would see?

The carrier molecules of the electron transport system are located in the

Astudy by solloch and et. al., in 2017, gives the map above which shows the frequency of alleles with a ccr5-delta32 mutations over 87 different countries. this mutation deletes the presence of a co-receptor (ccr5) on the outside of human t-cells (lymphocytes). some viruses, such as the one responsible for the black death and human immunodeficiency virus (hiv), require this receptor for attachment to host cells during the infection process. the black death was an epidemic that passed over northern europe during the 14th century killing nearly 60% of europeans. according to this information, which explanation best explains why northern europeans show a greater immunity for hiv than some other parts of the world?

This connective tissue consists of large round densely packed cells with the nucleus pushed to one side.