Which statement defines enzymatic activity? Enzymes are required to slow down biological reactions within cells.
Specific enzymes can catalyze a wide variety of chemical reactions.
Enzymes regulate cellular functions through feedback mechanisms.
Enzymes bind substrates so that reactive groups have many different orientations.

Biochem

Explanation:

8

explanation:

each principal energy level above the first contains one s orbital and three p orbitals. a set of three p orbitals, called the p sublevel, can hold a maximum of six electrons. therefore, the second level can contain a maximum of eight electrons - that is, two in the s orbital and 6 in the three p orbitals.

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