This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Transport Across Cell Membrane, Subject name: Physiology
Energy is required in which transport process, across cell membrane - 
Select and explain. 
A. Osmosis, B. Facilitated diffusion, C. Active transport, D. Simple diffusion
C: Active transport
Answer: C: Active transport 
Explanation: Ans. is kc' i.e.. Active transport Types of transport across cell membrane Carrier protein involvedEnergy requiredConcentration gradientSimple diffusionNoNoAlong (Down hill)Osmosis (Diffusion of H30)NoNoAlong (Down hill)Facilitated diffusionYesNoAlong (Down hill)Active transportYesYesAgainst (Uphill)ExocytosisNoYesN/A (not applicable)Endocytosis# Pinocytosis & PhagocytosisNoYesN/A# Receptor mediated endocytosisYesYesN/A