How do you design a controlled experiment to appropriately test a hypothesis? at least 4 sentences, please.
subject is science but it only lets me pick biology i need the answer asap.

Step 1: Define your variables.  

Step 2: Write your hypothesis.  

Step 3: Design your experimental treatments.  

Step 4: Assign your subjects to treatment groups.

i might be wrong but i think its a. let me know if i’m right and have a good rest of your day!

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