Ments Lo Monica C
What happens to enzyme activity around 63?
A. The enzyme begins to decrease the rate
of the reaction
B. The enzyme continues
to increase the rate
of the reaction
C. The enzyme changes
shape
D. The enzyme is used up

What is the phylum of soft bodied animals with a true bosy cavity and a three part body consisting of a foot visceral mass and a mantle

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?

The law of thermodynamics states that energy can't be created or destroyed. to natural sources of energy on earth are the