A bacteriophage virus causes infection in bacteria by injecting which of the following?DNA Hormones
Proteins
cytoplasm

DNA

Explanation:

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i'd say that the moon rock is about 2.2 billion years old.

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