Q. Glucose, Na, and amino acid are actively transported substances, because
A) Their movement occurs according to concentration gradient
B) Their movement occurs against concentration gradient
C) ATP is not needed for transportation
D) They are transported by simple diffusion
Explanation
Because these are ATP dependant substances whose movement occurs against concentration gradient. In active transport, ATP provided by mitochondria, provides energy needed to move these ions and molecules across the cell membrane
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.