WKS: Photosynthesis and Cellular Respiration GRADING RUBRIC WKS: Photosynthesis and Cellular Respiration

Part 1: Label the diagram below using the following: H2O, CO2, O2, Glucose, Light-Dependent Reaction, Light-Independent Reaction, Calvin Cycle, NADP+, ADP + P, ATP, NADPH, Sunlight, grana, stroma, thylakoids   CO2 water stroma sunlight NADP+ ADP + P L.I. Reaction L.D. Reaction Calvin Cycle ATP NADPH thylakoid grana C6H1206 oxygen

Questions: What are three factors that affect the rate of photosynthesis? Light Temperature Water CO2 conc.  

2. How do plants store the excess energy they produce? Give examples They convert it to larger polysaccharides like starch (amylose). Many plants have specialized structures to do this like a potato.  

3. Why do most plants appear green in color?   Because chlorophyll does not absorb green wavelengths of light (green light is reflected)

4. Why do they sometimes say that the forests of our planet are the “lungs of earth”?   They exchange gases like our lungs. Forests take CO2 out of the atmosphere and produce O2.

Complete the table below   Photosynthesis Function  Convert light energy into chemical potential energy Overall Equation  6CO2 + 6H20 → C6H12O6 + 6O2 Reactants  6CO2 + 6H20 Products  C6H12O6 + 6O2 Location of Light-Dependent Reaction  Thylakoid membrane Location of Light-Independent Reaction  Stroma

Electron Transport Chain Part 2: Label the diagram below using the following: Electron Transport Chain, Glycolysis, Glucose, Krebs Cycle, pyruvic acid, 2, 32, 2, H2O, O2, CO2   O2 Pyruvate Krebs Cycle Glucose Glycolysis Electron Transport Chain H2O CO2 2 2 32

Complete the table below Cellular Respiration Function  Convert food energy into ATP Overall Equation  C6H12O6 + 6O2 → 6CO2 + 6H20 Reactants  C6H12O6 + 6O2 Products  6CO2 + 6H20 Location of Glycolysis Cytoplasm Location of Cellular Respiration Mitochondria Starting molecule of Glycolysis  Glucose Starting molecule of Cellular Respiration Pyruvate (pyruvic acid) Number of ATP produced in Glycolysis  2 Total number of ATP produced in Glycolysis + Cellular Respiration  36

5. How are the processes of photosynthesis and cellular respiration dependent on each other?   Equations: 6CO2 + 6H20 → C6H12O6 + 6O2 C6H12O6 + 6O2 → 6CO2 + 6H20 Each makes what the other needs Order of electron transport/cycle Photosynthesis: electron transport → Calvin cycle Cellular Respiration: Krebs cycle → electron transport

6. What does the word “glycolysis” mean?   Glucose breaking

7. What is the difference between an aerobic process and an anaerobic process? Aerobic: requires oxygen Anaerobic: without oxygen

8. What happens after glycolysis if oxygen is present? The products of glycolysis (pyruvic acid) continues on into the mitochondria for cellular respiration to continue making ATP

9. What happens after glycolysis if oxygen is not present? Fermentation will take place trying to make a little bit of energy in the form of ATP

10. What is the purpose of fermentation? It allows glycolysis to continue making small amounts of energy. It gets rid of molecules that build up and eventually would stop glycolysis (NADH)

11. What are the two types of fermentation and where do they occur?   Lactic acid fermentation: occurs in muscle cells Alcoholic fermentation: anaerobic bacteria, yeast

12. What does ATP stand for?   Adenosine triphosphate

13. What are the three basic parts of an ATP molecule?   Adenine Ribose 3 phosphate groups

14. How does ATP release energy when it is needed in the cell?   The third phosphate bond breaks releasing energy

15. How does ADP stand for?   Adenosine diphosphate

16. How does an ADP molecule get “recharged” and turned back into an ATP molecule?   From the food we eat

17. What is the most common type of carbon-based food molecules that are used to provide energy in living things? Carbohydrates (then lipids)

18. Why are proteins rarely broken down and used to produce energy in living things?   Proteins are broken down into their component monomers (amino acids). These are then used to make new proteins the body needs

19. What type of organic compounds do plants store their excess energy? Starch (amylose)

20. What type of organic compounds do animals normally store their excess energy? Lipids (fat) and about 20 minutes worth of glycogen