Choose All That Apply

Multiple Choice

Choose all that apply.A concentration gradient is exhibited when

A) the room temperature is 34 degree Celsius and the outside air is 34 degrees Celsius.
B) intracellular fluid has 5% solute and extracellular fluid has 0.8% solute concentration.
C) during rest,muscle and liver cells contain high glycogen concentration and blood contains lower concentrations.
D) the pCO₂ changes from 45 to 35 mmHg in the alveoli of lungs.