Food that humans eat is made of complex macromolecules that are broken down, transported, and rebuilt through the actions of physical and chemical changes at all levels. In this unit, students will investigate the contents of different foods, the breakdown of those foods through digestion, and the ways in which body systems supply nutrients and energy to cells.
This is a great opportunity to review Cell Theory and to preview the interconnectedness of body systems (which is covered in more depth in Unit 3). Students practice carrying out experiments to test biochemical processes, including digestion and respiration, and they will design experiments by manipulating variables and posing questions.
Should crickets be added as a food for school lunches?