ALPHA
Glucose and fat molecules are both made from ___________
carbon, hydrogen, and oxygen atoms.
What determines whether a molecule can pass through a membrane?
size
if a chemical reaction to burn food is happening inside our bodies and if it’s the oxygen that is needed to burn food, what would you predict would happen to the oxygen levels inside our bodies?
oxygen levels inside our bodies should go down
What happens to carbon dioxide levels in our bodies when we burn food?
carbon dioxide levels increase
Where do oxygen levels change the most?
as they travel from one part of the body to another
How do our bodies use food not needed right now?
stored as fat
what happens when our bodies run out of fat stores
It begins to break down muscle tissue
How do food molecules get to the cells?
digestion
What is left over from the chemical reaction?
Carbon dioxide and water
What are the differences between glucose and fat molecules?
Fat is bigger than glucose.
Fat has long chains, and glucose is more compact
How do reactants get into the body and to the cells?
eating and breathing
name one way products leave the cells and the body.
diffusion (passive movement) or
active transport (requiring energy)
When burning fat, why does the mass of the closed system remain stable while the mass of the open system changes?
no matter is escaping
When we burned the duck fat, what states of matter did we see?
solid to liquid to gas
The human body primarily releases energy as ______
heat
How would energy needs change if you were running or jogging?
increase
When you eat, your blood levels of ________ increase.
glucose
Cells use glucose to transfer _______________
energy
Exercising would generally cause glucose in your blood to ________________
decrease
What chemical reaction is happening in our bodies that uses food as fuel?
cellular respiration
How does glucose get from the small intestine into the blood?
active transport
How is carbon dioxide removed from the lungs?
exhaling
Which gas molecule is most likely the one that is needed in the chemical reaction that burns food?
oxygen
When we burn energy from food, a ____________ happens
chemical reaction
Which cells from which parts of the body would likely need to use the most energy in a typical day?
muscle cells