The Uptake of Nutrients by Roots Requires Energy Because the

Multiple Choice

The uptake of nutrients by roots requires energy because the

A) concentrations of nutrients in the soil are greater than the concentrations in root cells.
B) concentrations of nutrients in the soil are much more dilute than the concentrations in root cells.
C) concentrations of nutrients in the soil and in root cells are equal.
D) root hairs are covered by a waxy layer.