Question

These organisms are not membrane-bound and does not show any living characteristics until they enter a host
a bateria
b protozoa
c viruses
d fungi​

Answer 1

Answer:

Bacteria I think

Hope it help...

Answer 2

Answer:

viruses

Explanation:

viruses cannot grow or multiple on their own. they need to enter a living organisms (host). that is why scientists consider viruses as non living organisms.