Please answer this future scientist or just smart people:?

test 2:
a viruses'____ alows it to lock onto a host cell like a key in a lock.
a. protein coat
b.outer membrane
c. DNA
d.RNA
which of the following are not viruses:
a. ebola, hepatitis, polio
b. common cold, flu, aids
c. tetanus, diptheria, pertrussis
d. chicken pox, small pox, cow pox.

determine if the statement is true or false. if it is true say true. if it is false you must change the underlined wod to fix the sentence:
jonas salk worked on the rabies vaccine
---------------

a. viruses lock onto the protein coat of a host cell.
c. Tetanus, diphtheria, and pertussis are all caused by bacteria, not by viruses.

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