The following characteristics describe which of these? this substance is not uniform in appearance and each part of the mixture contains a combination of different ingredients in different ratios a. homogeneous mixture b. heterogeneous mixture c. pure substance d. solution

Label a-f based on the table using c for concentrated and d for dilute

Amixture with the same composition throughout is!

Choose an equation that represents an enzyme-catalyzed reaction. (a) enzyme + substrate → enzyme-substrate complex (b) enzyme + substrate ←−→ enzyme + products (c) enzyme + substrate ←−→ enzyme-substrate complex → enzyme + products (d) enzyme + substrate ←−→ enzyme-substrate complex → enzyme-substrate complex + products