Which of the following sets of descriptors matches the molecule CARBON? A. Simple structure, compound, single bond, allotrope
B. Compound, allotrope, double bonds, giant structure
C. One element, triple bonds, molecule, diatomic
D. Giant structure, single bonds, allotrope, one element

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