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CELLULAR RESPIRATION An overview

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Presentation on theme: "CELLULAR RESPIRATION An overview"— Presentation transcript:

1 CELLULAR RESPIRATION An overview

2 ___________ use energy from sunlight or chemicals to make their own food AUTOTROPHS In the last chapter green plants used ________________ to trap energy from __________ and make ______________ sunlight food (glucose) PHOTOSYNTHESIS

3 In this chapter, we will learn how this glucose is ____________ by organisms and the _______ is stored as _______ in a process called ___________________ What kind of organisms do this? energy broken down ATP CELLULAR RESPIRATION

4 ________ (Including _______) ALL LIVING THINGS NEED ENERGY! What kind of organisms do this? plantsfungibacteria ______ animals humans

5 We get the energy the plants stored as glucose by _____________ directly or eating the _________ that ate the plants. How do we get the sugar from the plants? Image from: REMEMBER! _______________ get their energy by eating other organisms. HETEROTROPHS eating plants animals

6 REMEMBER CELL BIO

7 Area with gel-like material inside cell membrane surrounding mitochondria = ______________________ Power plant of cell that burns glucose and stores the energy as ATP = _______________ mitochondria CYTOPLASM Image from:

8 MITOCHONDRIA = cell power plant Surrounded by ___________ membrane Outer membrane & Inner membrane (called _______________ ) CYTOPLASM surrounds mitochondria DOUBLE CRISTAE

9 All organisms (heterotrophs AND autotrophs) use the _____________ to charge up their _______ Image from: energy in food ATP

10 This process of releasing the energy from FOOD (glucose) to make _____ = ________________ Image by Riedell Image from: ATP CELLULAR RESPIRATION

11 CELLULAR RESPIRATION happens __________ in ________________. If all the energy was released in one step… most would be lost as ____________________! slowly many steps light and heat

12 PHOTOSYNTHESIS ___________ + _________ + ___________ → _______________ + __________ 6 CO 2 6 H 2 OC 6 H 12 O 6 6O 2 _____________ + _________ → ________ + __________ + __________ ______________________________________________________________ CELLULAR RESPIRATION C 6 H 12 O 6 6O 2 6 CO 2 6 H 2 O The two equations are exact opposites!

13 UNITS FOR MEASURING HEAT ENERGY Amount of heat it takes to raise 1 gram of water 1 ◦ Celsius = _______________ Unit for measuring energy in food = _______________ 1 Calorie = _________ calories Calorie calorie

14 Remember from Photosynthesis? High energy electron carrier = ___________ Cellular respiration uses some different carriers to transport high energy electrons. _______ & ________ NAD + FAD NADP +

15 See glycolysis movie The first step in cellular respiration = __________________ Glycolysis happens in the ________________ outside the mitochondria GLYCOLYSIS CYTOPLASM

16 Glycolysis (GLYKOS = ________ LYSIS= ___________ ) Glycolysis ____________________________ BUT it needs some ____________to get it started. What molecule do you think is going to supply the energy do this? split apart DOES NOT REQUIRE OXYGEN ATP sweet ENERGY

17 ________ ↓ ___________ → → _____________ ↓ ____________________ GLUCOSE2 PYRUVIC ACID PUT IN ________ and GET BACK __________ Net gain of ________ 2 ATP’s 4 ATP’s GLYCOLYSIS 2 ATP’s ATP ATP

18 PYRUVIC ACID MOVES TO NEXT STEP IF THERE IS NO OXYGEN (______________) IF THERE IS OXYGEN (_____________) = ANAEROBIC = AEROBIC

19 PYRUVIC ACID ___________ OXYGEN 2 kinds of fermentation ___________________ & _____________________ ANAEROBIC Alcoholic Lactic acid WITHOUT

20 ____________ → __________ + ______ ALCOHOLIC FERMENTATION PYRUVIC ACID ALCOHOL Happens when yeast makes bread dough rise CO 2 bubbles make _____________ in bread Alcohol _______________ during cooking CO 2 air spaces evaporates

21 ____________ → __________ + ______ ALCOHOLIC FERMENTATION PYRUVIC ACID ALCOHOL Happens when ___________ make _______ or ____________ make ______ CO 2 yeast beer bacteriawine

22 _____________ → ______________ LACTIC ACID FERMENTATION PYRUVIC ACID LACTIC ACID Happens in _____________ during ____________when body can’t get oxygen to tissues fast enough. Lactic acid builds up in muscles causing soreness exercise muscles

23 ______________ → ______________ LACTIC ACID FERMENTATION PYRUVIC ACID LACTIC ACID Happens when bacteria are used to make __________and ____________ like: Yogurt, buttermilk, sauerkraut, pickles, cheese sour cream, & kimchi food beverages

24 Flooded Corn Field plants need ______________________ too. If plants seeds are under water 3 days or more, the seeds will die. If a plants roots are under water for 3 days or more, the plants will die. By:http://skyways.lib.ks.us/towns/ElkCity/2007flood.html Plants do ____________ but photosynthesis oxygen for cellular respiration

25 Cellular Respiration “ Cellular” – because it happens in the _______________ and _______________ of each cell cytoplasm mitochondria

26 Cellular Respiration “Respiration” different from the breathing kind of respiration – instead refers to the ________________ or break down of Glucose Burning of fuel

27 Cellular Respiration Takes place in __________________________ As a way to use glucose to get energy in the form of ATP Both animals and plants

28 CELLULAR RESPIRATION includes: ______________________ _______________________ GLYCOLYSIS ELECTRON TRANSPORT CHAIN KREBS CYCLE

29 Break down of Cellular Respiration  Glycolysis (outside the mitochondria)  Aerobic respiration ( inside the mitochondria)  Krebs cycle & ETC  Anaerobic respiration ( outside the mitochondria)  Fermentation

30

31 Fig ATP Cytoplasm Glucose Pyruvate Glycolysis Electrons carried via NADH

32 Fig Mitochondrion ATP Cytoplasm Glucose Pyruvate Glycolysis Electrons carried via NADH ATP Electrons carried via NADH and FADH 2 Citric Acid Cycle (Kreb’s cycle)

33 Fig Mitochondrion 2 ATP Cytoplasm Glucose Pyruvate Glycolysis Electrons carried via NADH 2 ATP Electrons carried via NADH and FADH 2 32 ATP Electron transport chain (ETC) Citric Acid Cycle (Kreb’s cycle)

34 Cytoplasm Glucose Pyruvate Glycolysis Electrons carried via NADH 2 ATP 32 ATP Electron transport chain (ETC) Citric Acid Cycle (Kreb’s cycle) Electrons carried via NADH and FADH 2 CO 2 Mitochondrion 2 3C molecules 2 ATP C 6 H 12 O 6 e—H+e—H+ O2O2 H2OH2O 6O 2 6 CO 2 6 H 2 O +++

35 REMEMBER: The “fork in the road” happens following glycolysis. The presence or absence of _______________ decides which path it takes next. OXYGEN

36 Kreb’s Cycle 1.Glycolysis 2.Kreb’s Cycle 3.Electron Transport Chain Glucose e-e- e - +O 2 = H 2 O Aerobic Respiration

37 Kreb’s Cycle 1.Glycolysis 2.Kreb’s Cycle 3.Electron Transport Chain Glucose e-e- e - +O 2 = H 2 O Aerobic Respiration 2 ATP 32 ATP

38 WHERE DOES IT HAPPEN? Glycolysis KREBS ET Enzymes for ELECTRON TRANSPORT CHAIN are located in the ___________________________ Cristae of the mitochondria

39 Comparison Photosynthesis Food _____________ Sun energy ___________________ CO 2 ________________ O 2 _________________ End products: _____________________ Happens in: _____________________ Cell Respiration Food ____________ Sun energy ____________________ CO 2 _________________ O 2 _____________________________ End products: ______________________ Happens in: ______________________ created broken down Stored in glucose Taken in Given off Glucose, O 2 Chloroplast Released from glucose Given off Taken in CO 2, H 2 O Mitochondria

40 Light energy ECOSYSTEM Photosynthesis in chloroplasts CO 2 + H 2 O Cellular respiration in mitochondria Glucose + O 2 ATP powers most cellular work Heat energy ATP


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