Liam has gone to a store to buy posters. He asks the shopkeeper to give him a poster, which has bivalves, octopuses, squid, and sea snails on it. To which phylum does the poster belong? A. Bryozoa B. Hemichordata C. Ctenophora D. Rotifera E. Molluska

Why is it incorrect to say that mitochondria function only as energy factories with cell

The direct energy source that drives atp synthesis during respiratory oxidative phosphorylation is

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?