Energy and Life Biology 611 Energy Knowledge Pretest

Energy and Life Biology 611

Energy Knowledge Pre-test Determine if the following statements are true or false. Make sure you can explain your choices. ____1. In the diagram of the pendulum, the amount of energy at point B is greater than the amount of energy at point A. _______2. If the pendulum starts at point A and swings to point C, the energy conversion can be described as potential to kinetic to potential. ______3. The amount of kinetic energy depends on how quickly the pendulum bob is moving. ______4. In order for something to “burn” (synonym for combustion), the temperature must be raised. ______5. When digestion occurs in our stomach, energy is released from food. ______6. The form of energy found in wood, gasoline, and food particles such as glucose can best be described as heat energy. _____7. Some energy conversions result in an increase in the total amount of energy.

What is Energy? (Review) • Energy is: • Give me some examples of different forms of energy that you know of:

Why does the Cell (& all living things ) Need Energy? Cells have to do all these activities and more: • _____ • Movement • Making _______ • _______, , …etc

Where does Energy for Living Things Come From? • The form of energy that most living thing use is ________. (mostly from: _______) • Reminder: All of that energy on Earth comes from the _____!!!

How Can We Use the Energy From the Sun? • Two ways of getting energy from the sun: – _______: organisms that can make their own energy from sunlight or other chemicals • Example: plants, some bacteria. . etc. – _______: organisms that cannot make their own energy. Need to get energy from ____. • Example: animals, fungus, most bacteria. . etc.

~ATP~ • Most of the energy that living thing utilize is stored in ____________. • The most important chemical compound for storing and releasing energy is called _____ (adenosine triphosphate)

How can ATP be used for energy storage and release? • http: //www. biologyinmotion. co m/atp/index. html • ATP: ready to ______ energy – Structure: _____ phosphates attached. • ADP: ready to _______ energy – Structure: only _____ phosphates attached

http: //www. cat. cc. md. us/~gkaiser/biotutorials/energy/adpan. html ATP ______energy stored in a high energy chemical bond by removing the 3 rd _____ and becoming ADP ATP ADP + ____

Cells ____ energy by adding the phosphate back on to ADP to make ATP. The energy to do this comes from ______ like _______ It’s like recharging the battery ! ADP + ________ ATP

ATP is great! …but… • ATP is great for _____ energy, but not for _____ lots of energy. • Therefore, most of the energy in the cell is stored in the forms of ____________. – Example: _____ (sugar)