What is a factor that is kept the same between the control and experimental groups called

All vaccination should(n’t) be mandatory! 1.at least 5 sentences explaining 2.why? 3.in the end summarize the sentence

The illustration shown is an ovum, a female sex cell. a mutation in this cell may be passed to the woman’s offspring during a) birth. b) mitosis. c) dna replication. d) sexual reproduction

Omg substrates with the same size and shape as the active site will bind to the enzyme. why is the key labeled the “bad” substrate?