1. Cell Energy
PAP Biology 2018

2. METABOLISM Total set of an organism’s chemical processes (energy)
Thousands of metabolic reactions are occurring all at once
Balancing act between the build-up and breakdown of molecules in an organism
Revolves around ATP (energy)
Catabolism & Anabolism

3. ATP Provides energy for cell processes Released by catabolic processes
Required by anabolic processes
ATP

4. Catabolism Breakdown of complex molecules HETEROTROPHS
Polymers  Monomers
Releases Energy
HETEROTROPHS
obtains energy by consuming and digesting nutrition from environment
EX: Cellular Respiration

5. Cellular Respiration: process by which organisms break down glucose into ATP (energy)
OCCURS IN MITOCHONDRIA
AEROBIC RESPIRATION
ANAEROBIC RESPIRATION
Requires oxygen
Occurs in cytoplasm & mitochondria
Produces more energy
(36 ATP molecules)
Doesn’t require oxygen
Only occurs in cytoplasm
Produces less energy
(2 ATP molecules)
FORMULA: O2+C6H12O6→H2O+CO2
Oxygen
Carbon
Dioxide
Glucose
Water

6. Common Misconceptions
Anaerobic respiration is a common part of cellular respiration
Plants and animals undergo cellular respiration
Cellular respiration is much more than ”breathing”

7. Anabolism Build-up of simple molecules AUTOTROPHS
Monomers  Polymers
Requires Energy
AUTOTROPHS
uses energy from environment to fuel the assembly of complex organic compounds
EX: Photosynthesis

8. Photosynthesis process in which light energy is converted to chemical energy in the form of sugars
OCCURS IN CHLOROPLASTS
Glucose molecules (sugars)
constructed from water and carbon dioxide
Provides energy and carbon
Water is released as a waste product
Occurs in the leaves of plants
FORMULA: H2O+CO2 → O2+C6H12O6
Water
Carbon
Dioxide
Oxygen
Glucose

9. COMPARISONS THEY’RE EXACTLY OPPOSITE!
CELLULAR RESPIRATION VS. PHOTOSYNTHESIS
THEY’RE EXACTLY OPPOSITE!

10. Photosynthesis/Cellular Respiration Foldable
Stack 2 sheets of paper on top of each other, off-set about 1 inch (on the short side).
Fold these papers in half.
Cut down the middle of the top three flaps.
Label and complete the foldable as shown below.
Photosynthesis
Cellular Respiration
Chloroplast Drawing
Mitochondria Drawing
Draw a picture and label inside above each flap
Location
Location
Reactants
Reactants
Products
Products