Research indicates that people who live in unsophisticated, non-technologically-based cultures are incapable of attaining the formal operational stage of thinking, as described by Piaget

The sodium-potassium transporter keeps the intracellular concentration of sodium ions low by pushing them out of the axon

Indicate whether the statement is true or false.

Written examinations were not administered on a large scale in American schools until the 20th

century. Indicate whether the statement is true or false