In the convoluted tubules of the kidney during the formation of secondary urine, glucose and sodium ions are reabsorbed into the blood. What kind of transport of substances takes place in this process?
This is an active transport, since it goes against the concentration gradient of the corresponding substances (from where it is less to where it is more). This requires wasting energy.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.