If an organism didn't have DNA, it would be missing which sign of life? A.
information system
B.
response to the environment
C.
one or more cells
D.
complex chemical activities

C

Explanation:

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enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products