We eat food for two reasons: (check both that apply)to obtain the energy we need to stay aliveto get the raw materials required for building all of our tissues to regulate the pH levels in our bloodto obtain gasses needed for chemical reactions in the body

What is the necessity of food in the context of cell and tissue functions?It provides energy and raw materialsIt controls organ functionsIt regulates brain activityIt prevents cell division

It is required to fuel body functions, that comes from the food that is taken inside the body that goes through the process of chemical breakdown resulting to substances that cells can use as fuel.

Substances you must obtain from food to meet the body's physiological needs are called nutrients.

#7 Metabolic Meltdowns8          We humans eat food so that we can convert chemical energy into the activities that keep us alive, from breathing to reproduction. It's our metabolism that maintains these processes. Metabolism is an overarching term encompassing all of the chemical reactions that happen within our bodies. The nutrients that humans consume begin to break down the moment we start chewing up a slice of pizza or quiche. Our stomachs take over from there, converting those nutrients into calories that we need to stay alive.9          In theory, zombies consume brains because they, too, require sustenance that perpetuates their ability to function. There's just one problem — zombies aren't actually alive. As members of the undead society, they lack metabolic capabilities of any kind.10        Even if they could magically summon the energy to chomp on some tasty brains, their stomachs (if they even have stomachs) couldn't provide a chemical pathway for nutrients to convert to energy, leaving the undead rather inanimate and, well, lifeless.*1 pointEnergy from food helps keep us alive by providing energy and nutrients.Zombies would not have the metabolic functions necessary to get energy from food, which would leave them limp and lifeless.Metabolism is an overarching term encompassing all of the chemical reactions that happen within our bodies.Humans are different from zombies because zombies eat brains for energy, while humans use food for nutrients.

Why does your body need food?EnergyGrowth and repair of body tissuesControl of body processesGroup of answer choicesII, II, IIIIIIII