HJ E N Z Y M E A C T I V I T Y Enzyme A Enzyme B / / * . * * . . * * . . * * . . * * . . * * . . * * . . * . * . * . * . * . * . * . * . * . * . * . * * . |____|____|____|____|____|____|____|____|____|____|____|____|____|____|____| SECONDS: 10 15 20 25 30 35 40 45 50 55 60 65 70 75