Cellular Respiration
 Where do organisms get their energy?
Food molecules contain chemical energy that is released when their chemical
bonds are broken.
 What is a calorie?
 What are kilocalories?
 How many Calories of energy do carbohydrates and proteins contain per
gram?
Fats?
Cells do not break down all food molecules and release the energy as heat all at
once. Food molecules are broken down gradually, enabling the cells to use the
energy stored in chemical bonds of foods to produce ATP, which directly power
the cell.
Overview of Cellular Respiration:
Write the equation for Cellular Respiration
 How is this equation similar to the equation for photosynthesis?
List the 3 stages of Cellular respiration:
1.
2.
3.
 What organelle is involved in Cellular respiration?
 Which 2 of the 3 stages take place in the organelle??
Oxygen plays a huge role in the making of ATP in Cellular Respiration (this is
why we need to breath!!). It is termed Cellular Respiration refer to the energy
releasing pathways of the cell.
 If the pathway of cellular respiration requires oxygen, it is called
_____________. If oxygen is not required, it is called _______________. If
oxygen is not available, an alternate pathway must be taken that is
anaerobic, called ______________________.
Comparing Photosynthesis and Cellular Respiration
The Energy in photosynthesis and cellular respiration flows in opposite
directions.
Fill in: Photosynthesis removes ____________ ____________ from the
atmosphere, and cellular respiration puts it back. Photosynthesis releases
________________ into the atmosphere and Cellular respiration uses that
__________ to release ____________ from food.
 Do all organisms undergo cellular respiration, including plants??
 What organisms undergo photosynthesis?