How does a mutation in a sex cell differ from a mutation in a non-sex cell? A. Mutations in sex cells are chromosomal mutations.
B. Mutations in sex cells can be passed on to children.
C. Mutations in sex cells are silent mutations.
D. Mutations in sex cells are more deadly.

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme

if you look up in the top right corner you'll see your current profile picture, click than click "view profile" you'll be able to change it there.

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.