Plz during one interval of the game of fetch, a dog ran 27 meters in 9 seconds.

what was the dog's speed for this interval of the trip?

a.
0.3 m/s

b.
3.0 m/s

c.
9.0 m/s

d.
30.0 m/s

Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. why? molecules and active sites vary in size; only properly sized molecules can fit. there is a precise compatibility between the active site and the lactose molecule. specificity refers to the action of the enzyme, such as hydrolysis, and relatively few molecules can be hydrolyzed. reaction-specific enzymes assume a fit by folding around the most numerous substrate molecules.