| Activity #3: Cellular Respiration
The enzyme-controlled chemical reaction that takes place in the mitochondria of every cell in the body, which provides energy for the body, is called CELLULAR RESPIRATION. In this reaction, glucose is broken down to supply energy for all of the cell�s needs. 1) Write the overall chemical reaction for cellular respiration: __________ + __________ � __________ + __________ + energy 2) Referring to the overall chemical reaction above, what compound reacts with glucose when it is broken down? 3) Where does your body get this compound? What compound besides water is produced in the reaction? How does your body get rid of this compound? Do you see why breathing is also called respiration? 4) The energy is in the form of ATP. How many molecules of ATP are produced? (The net amount comes from subtracting the amount of ATP used up in this process from the total ATP produced, called gross.) Activity #4: ATP; The Packet of Energy The energy produced in cellular respiration is not always needed by the cell at exactly the same time that glucose is broken down. Therefore, it has to be stored until needed. It is stored in the form of a high-energy compound known as ADENOSINE TRIPHOSPHATE or ATP. ADP or ADENOSINE DIPHOSPHATE and loose phosphate molecules- both of which are found in the cell- combine using energy produced in cellular respiration (the breaking down of glucose) to form ATP. Found in the Cell From cell respiration Contain Potential Energy A ~ P ~ P + P + energy � A ~ P ~ P ~ D Now, whenever the cell needs energy for something, ATP has one of its phosphates ripped off and becomes ADP, producing lots of energy in the process. 1) Take a look at a of ATP or page 100. |