Which of the following is the best explanation as to why germs that infect a certain family of animals will often NOT be able to infect a different family of animals:
W) different metabolic pathways exist in different animals
X) germs gain entry into cells by binding to receptors which are often specific to certain groups of organisms
Y) the immune systems of different animals prevents infection of unusual diseases
Z) germs reproduce only when genes in a cell allow them
✔️Answer:X) GERMS GAIN ENTRY INTO CELLS BY BINDING TO RECEPTORS WHICH ARE OFTEN SPECIFIC TO CERTAIN GROUPS OF ORGANISMS
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