2. author unknown address unknown accessed unknown Respiration Photosynthesis

3. Play author unknown address unknown accessed unknown A. Cellular Respiration A. Cellular Respiration B. Glycolysis B. Glycolysis C. Aerobic Respiration C. Aerobic Respiration E. The Mitochondrion E. The Mitochondrion D. Chemiosmosis D. Chemiosmosis

4. 1. Cellular respiration is redox reaction 2. C 6 H 12 O 6 + O 2  CO 2 + H 2 O + E 3. Oxidation involves the loss of electrons from an element a. frequently involves gaining oxygen or losing hydrogen 4. Reduction involves a gain of electrons b. frequently involves losing oxygen or gaining hydrogen_ A. Cellular Respiration author unknown address unknown accessed unknown

5. 1. Cellular respiration is redox reaction 2. C 6 H 12 O 6 + O 2  CO 2 + H 2 O + E 3. Oxidation involves the loss of electrons from an element a. frequently involves gaining oxygen or losing hydrogen 4. Reduction involves a gain of electrons b. frequently involves losing oxygen or gaining hydrogen_ A. Cellular Respiration Glucose Carbon DioxideWater Oxygen Electrons & Hydrogen Energy is Released author unknown address unknown accessed unknown

6. 5. ATP (adenosine triphosphate) has phosphate groups that are “spring loaded” a. ATP charged b. ADP uncharged 6. ATP is continuously converted to ADP and recycled back 7. Phosphorylation is a process in which ATP is made_ author unknown address unknown accessed unknown

7. 5. ATP (adenosine triphosphate) has phosphate groups that are “spring loaded” a. ATP charged b. ADP uncharged 6. ATP is continuously converted to ADP and recycled back 7. Phosphorylation is a process in which ATP is made_ author unknown address unknown accessed unknown author unknown address unknown accessed unknown author unknown address unknown accessed unknown Click

8. B. Glycolysis 1. Occurs in the cytoplasm in four stages: 2. Activation (Phosphorylation) of Glucose a. 2 ATP molecules are needed to provide the energy (i.e. a “loss’ of 2 ATP) b. some rearrangement of molecule 3. Lysis- splitting 6C compound into two 3C molecules_ author unknown address unknown accessed unknown

9. B. Glycolysis 1. Occurs in the cytoplasm in four stages: 2. Activation (Phosphorylation) of Glucose a. 2 ATP molecules are needed to provide the energy (i.e. a “loss’ of 2 ATP) b. some rearrangement of molecule 3. Lysis- splitting 6C compound into two 3C molecules_ author unknown address unknown accessed unknown author unknown address unknown accessed unknown author unknown address unknown accessed unknown PlayClick

10. 4. Oxidation- by the removal of hydrogen, picked up by NAD+ (a hydrogen-carrying co-enzyme) a. 2 NADH + H + 5. ATP formation a. 4 ATP are produced 6. Products of glycolysis: a. 2 pyruvate b. 2ATP c. 2 NADH + H + _ Play author unknown address unknown accessed unknown

11. C. Aerobic Respiration 1. Aerobic respiration occurs in the mitochondria in eukaryotes 2. Events of respiration: a. the link reaction b. the Krebs cycle c. the role of NADH + H + d. the electron transport chain e. the role of oxygen_ author unknown address unknown accessed unknown

12. C. Aerobic Respiration 1. Aerobic respiration occurs in the mitochondria in eukaryotes 2. Events of respiration: a. the link reaction b. the Krebs cycle c. the role of NADH + H + d. the electron transport chain e. the role of oxygen_ University of Arkansas at Little Rock http://www.ualr.edu/botany/plantcells.html accessed 21.11.07 University of Arkansas at Little Rock http://www.ualr.edu/botany/plantcells.html accessed 21.11.07 author unknown address unknown accessed unknown Click

13. 3. The link reaction a. oxidative decarboxylation- each pyruvate is decarboxylated (CO 2 removed) b. removal of 2H and electrons to form one NADH + H + c. the remaining two-carbon molecule (acetyl group) reacts with reduced coenzyme A_ author unknown address unknown accessed unknown

14. 3. The link reaction a. oxidative decarboxylation- each pyruvate is decarboxylated (CO 2 removed) b. removal of 2H and electrons to form one NADH + H + c. the remaining two-carbon molecule (acetyl group) reacts with reduced coenzyme A_ author unknown address unknown accessed unknown author unknown address unknown accessed unknown author unknown address unknown accessed unknown ClickPlay

15. c. for each pyruvate, the result is: 1) 1 CO 2 2) 1 acetyl-CoA 3) 1 NADH + H + _ author unknown address unknown accessed unknown

16. 4. The Krebs cycle a. each acetyl group (CH 3 CO) formed in the link reaction yields two CO 2 (decarboxylation) b. the hydrogen atoms removed are collected by “hydrogen-carrying coenzymes” (NAD + and FAD) 1) each NADH + H + results in 3 ATP 2) each FADH 2 results in 2 ATP_ author unknown address unknown accessed unknown

17. 4. The Krebs cycle a. each acetyl group (CH 3 CO) formed in the link reaction yields two CO 2 (decarboxylation) b. the hydrogen atoms removed are collected by “hydrogen-carrying coenzymes” (NAD + and FAD) 1) each NADH + H + results in 3 ATP 2) each FADH 2 results in 2 ATP_ author unknown address unknown accessed unknown author unknown address unknown accessed unknown author unknown address unknown accessed unknown ClickPlay

18. 5. One turn of the Krebs cycle yields: a. 2 CO 2 b. 3 NADH + H + c. 1 FADH 2 d. 1 ATP_ author unknown address unknown accessed unknown

19. D. Chemiosmosis 1. Electron transport carriers are strategically arranged over the inner membrane of the mitochondrion 2. NADH + H + and FADH 2 are oxidized (by removal of H + and e - ) 3. e - pass from carrier to carrier (alternately oxidized- removal of e - and reduced- gain of e - )_ author unknown address unknown accessed unknown Play

20. 4. Energy released pumps H + from the matrix into the intermembrane space against a concentration gradient (the proton pump) 5. Intermembrane space volume very small so rapid build up of H + concentration, more positive, more acid 6. H+ ions flow back into the matrix down a concentration gradient through special protein channels on stalked particles_ author unknown address unknown accessed unknown

21. 7. The energy drives the synthesis of ATP by ATP synthetase in the stalked particles 8. Final H + and e - acceptor is oxygen  making water_ author unknown address unknown accessed unknown Play

22. E. The Mitochondrion 1. The structure of the mitochondrion relates to its function a. the cristae form a large surface area for the electron transport chain b. the small space between inner and outer membranes allows for accumulation of protons c. the fluid matrix contains enzymes of the Krebs cycle_ author unknown address unknown accessed unknown

24. A. Photosynthesis A. Photosynthesis B. Light-dependent Reactions B. Light-dependent Reactions C. Chemiosmosis C. Chemiosmosis D. Light-independent Reactions D. Light-independent Reactions E. Action & Absorption Spectra E. Action & Absorption Spectra F. Limiting Factors F. Limiting Factors author unknown address unknown accessed unknown Play

25. 1. Photosynthesis consists of light-dependent and light- independent reactions 2. CO 2 + H 2 O + E  C 6 H 12 O 6 + O 2 3. Photosynthesis occurs in the chloroplast_ A. Photosynthesis author unknown address unknown accessed unknown

26. 1. Photosynthesis consists of light-dependent and light- independent reactions 2. CO 2 + H 2 O + E  C 6 H 12 O 6 + O 2 3. Photosynthesis occurs in the chloroplast_ A. Photosynthesis Electrons & Hydrogen OxygenGlucose WaterCarbon Dioxide Energy from the Sun author unknown address unknown accessed unknown

27. 1. Photosynthesis consists of light-dependent and light- independent reactions 2. CO 2 + H 2 O + E  C 6 H 12 O 6 + O 2 3. Photosynthesis occurs in the chloroplast_ A. Photosynthesis Electrons & Hydrogen OxygenGlucose WaterCarbon Dioxide Energy from the Sun author unknown address unknown accessed unknown author unknown address unknown accessed unknown author unknown address unknown accessed unknown Click

28. author unknown address unknown accessed unknown 4. The structure of the chloroplast relates to its function. a. the large surface area of thylakoids for light absorption b. the small space inside thylakoids for accumulation of protons c. the fluid stroma for the enzymes of the Calvin cycle_

29. Play author unknown address unknown accessed unknown 4. The structure of the chloroplast relates to its function. a. the large surface area of thylakoids for light absorption b. the small space inside thylakoids for accumulation of protons c. the fluid stroma for the enzymes of the Calvin cycle_ Chloroplast (photosynthesis) 1. Large SA of thylakoid membranes for light absorption 2. Small space inside thylakoids for rapid accumulation of H + 3. Fluid (stroma) with enzymes for the Calvin cycle Mitochondria ( respiration) 1. Large SA of inner membranes 2. Small space inside IMS for rapid accumulation of H + 3. Fluid (matrix) with enzymes for the Krebs cycle Chloroplast (photosynthesis) 1. Large SA of thylakoid membranes for light absorption 2. Small space inside thylakoids for rapid accumulation of H + 3. Fluid (stroma) with enzymes for the Calvin cycle Mitochondria ( respiration) 1. Large SA of inner membranes 2. Small space inside IMS for rapid accumulation of H + 3. Fluid (matrix) with enzymes for the Krebs cycle

30. B. Light-dependent Reactions 1. The light-dependent reactions a. the photoactivation of photosystem II b. photolysis of water c. electron transport d. photoactivation of photosystem I e. reduction of NADP+ f. cyclic and non-cyclic photophosphorylation_ author unknown address unknown accessed unknown

31. B. Light-dependent Reactions 1. The light-dependent reactions a. the photoactivation of photosystem II b. photolysis of water c. electron transport d. photoactivation of photosystem I e. reduction of NADP+ f. cyclic and non-cyclic photophosphorylation_ author unknown address unknown accessed unknown Play THE LOLLIPOP APPARATUS USED TO WORK OUT THE BIOCHEMICAL DETAILS OF THE CALVIN CYCLE SHOWS CONSIDERABLE CREATIVITY. TO WHAT EXTENT IS THE CREATION OF AN ELEGANT PROTOCOL SIMILAR TO THE CREATION OF A WORK OF ART? Theory of Knowledge TOK

32. 2. Light energy is trapped in PSII and boosts electrons to a higher energy level a. the electrons are received by an electron acceptor 3. The electrons which have been removed by the chlorophyll are replaced by pulling in other electrons from a water molecule a. the loss of electrons from the water molecule causes it to dissociate into H + and oxygen gas_ author unknown address unknown accessed unknown Play

33. 4. The electrons are passes from the electron acceptor along a series of electron carriers to PSI a. the energy is captured converting ADP to ATP b. light energy is thereby been converted to chemical energy 5. Light energy absorbed by PSI boosts electrons to an even higher energy level a. the electrons are received by another electron acceptor_ author unknown address unknown accessed unknown Play

34. 6. The protons from the water molecule combine with the electrons from the second electron acceptor and these reduce NADP + 7 Some electrons from the second acceptor may pass back to the chlorophyll molecule by the electron carrier system, yielding ATP as they do so a. the process is called cyclic phosphorylation_ author unknown address unknown accessed unknown Play

35. author unknown address unknown accessed unknown

36. C. Chemiosmosis 1. Photophosphorylation can be explained in terms of chemiosmosis 2. Electron transport causes the pumping of protons to the inside of the thylakoids 3. Protons accumulate (pH drops) 4. Protons move out to the stroma, down a concentration gradient through protein channels in the ATP synthetase enzymes 5. This provides energy for ATP synthesis_ author unknown address unknown accessed unknown Play

37. 1. Roles of ribulose bisphosphate (RuBP) carboxylase 2. Reduction of glycerate 3- phosphate (GP) to triose phosphate (TP) 3. NADPH + H+ 4. ATP 5. Regeneration of RuBP 6. Subsequent synthesis of more complex carbohydrates_ D. Light-independent Reactions author unknown address unknown accessed unknown

38. 1. Roles of ribulose bisphosphate (RuBP) carboxylase 2. Reduction of glycerate 3- phosphate (GP) to triose phosphate (TP) 3. NADPH + H+ 4. ATP 5. Regeneration of RuBP 6. Subsequent synthesis of more complex carbohydrates_ D. Light-independent Reactions author unknown address unknown accessed unknown author unknown address unknown accessed unknown author unknown address unknown accessed unknown ClickPlay

39. E. Action & Absorption Spectra 1. Absorption spectrum- displays wavelengths of light that a particular photosynthetic pigment can absorb 2. Action spectrum- displays wavelengths of light that bring about photosynthesis in a particular plant_ author unknown address unknown accessed unknown

40. 3. In green plants, the action spectrum and the absorption spectrum of photosynthesis pigments coincide very closely a. provides evidence of the involvement of chlorophyll in photosynthesis_ author unknown address unknown accessed unknown

41. 3. In green plants, the action spectrum and the absorption spectrum of photosynthesis pigments coincide very closely a. provides evidence of the involvement of chlorophyll in photosynthesis_ author unknown address unknown accessed unknown author unknown address unknown accessed unknown author unknown address unknown accessed unknown ClickPlay

42. 1. The rate of photosynthesis is determined by limiting factors a. light intensity b. temperature c. concentration of carbon dioxide_ F. Limiting Factors author unknown address unknown accessed unknown

43. 1. The rate of photosynthesis is determined by limiting factors a. light intensity b. temperature c. concentration of carbon dioxide_ F. Limiting Factors author unknown address unknown accessed unknown author unknown address unknown accessed unknown author unknown address unknown accessed unknown Click

44. 2. Light intensity a. directly proportional to rate of photosynthesis b. levels off due to the pigments being saturated with light_ author unknown address unknown accessed unknown

45. 2. Light intensity a. directly proportional to rate of photosynthesis b. levels off due to the pigments being saturated with light_ author unknown address unknown accessed unknown author unknown address unknown accessed unknown author unknown address unknown accessed unknown Click

46. 3. Temperature a. has little effect on light reactions b. enzymes of the Calvin cycle are effected c. optimum temperature varies (25˚C-30˚C)_ author unknown address unknown accessed unknown

47. 4. CO 2 concentration a. average CO 2 content is 0.04% b. increase to 0.5% usually increases photosynthesis c. concentrations above 0.1% can damage leaves_ author unknown address unknown accessed unknown

48. 4. CO 2 concentration a. average CO 2 content is 0.04% b. increase to 0.5% usually increases photosynthesis c. concentrations above 0.1% can damage leaves_ author unknown address unknown accessed unknown IF WE WANT TO INVESTIGATE THE EFFECT OF ONE FACTOR, ALL OTHER FACTORS THAT COULD HAVE AN INFLUENCE MUST BE CONTROLLED. IN PHOTOSYNTHESIS THE SITUATION IS RELATIVELY SIMPLE, AND WE CAN ENSURE THAT FACTORS OTHER THAN THE ONE WE ARE INVESTIGATING ARE MAINTAINED AT A CONSTANT AND OPTIMAL LEVEL. IN OTHER AREAS THERE ARE MUCH GREATER PROBLEMS. IN THE MANY INVESTIGATIONS OF HUMAN HEALTH, THERE ARE ALMOST ALWAYS COMPLICATING FACTORS. FOR EXAMPLE, VEGETARIANS HAVE A LONGER LIFE EXPECTANCY THAN MEAT EATERS. WE WOULD BE WRONG TO CONCLUDE THAT EATING MEAT LOWERS LIFE EXPECTANCY UNLESS WE COULD SHOW THAT THE ONLY DIFFERENCE BETWEEN THE VEGETARIANS AND THE MEAT EATERS IN OUR TRIAL WAS THE MEAT EATING Theory of Knowledge TOK