Question

complete the following sentences about enzyme function: enzymes speed reaction rates by
_____ and lowering activation energy. activation energies drop because enzymes stabilize
_____. enzyme specificity is a function of the active sites shape and the chemical properties
of _____ at the active site. see section 8.3.

1. orienting substrates; 2. reaction products; 3. r - groups

1. orienting substrates; 2. the transition state; 3. reaction products

1. orienting products; 2. the transition state; 3. r - groups

1. orienting substrates; 2. the transition state; 3. r - groups

Explanation:

Enzymes speed reaction rates by orienting substrates (bringing reactants together in the correct orientation for the reaction). Activation energies drop because enzymes stabilize the transition state (the high - energy intermediate state of the reaction). Enzyme specificity is a function of the active site's shape and the chemical properties of R - groups (the side chains of amino acids in the enzyme's active site) at the active site.

Answer:

1. orienting substrates; 2. the transition state; 3. R - groups