The number of substrate molecules converted to product in a given unit of time by a single enzyme molecule at saturation is referred to as the: dissociation constant maximum velocity turnover number Michaelis constant

The correct answer is turnover number.

Explanation:

Michaelis–Menten 's equation:

v = rate of formation of products

[S] = Concatenation of substrate

=  Michaelis constant

= Maximum rate achieved

= Catalytic rate of the system = turn over number

= Initial concentration of enzyme.

The turn over number is defined as number of substrate molecules converted into product by enzyme molecule per second.