Photosynthesis and Respiration

Slides:



Advertisements
Similar presentations
Energy in a Cell PART2. Predict: Why do we breathe?! Why do we breathe?! Why do we eat what plants produce? Why do we eat what plants produce?
Advertisements

How is energy being obtained by the organisms in this picture?
Understanding Photosynthesis and Cellular Respiration.
B-3.2: Summarize the basic aerobic and anaerobic processes of cellular respiration and interpret the chemical equation for cellular respiration.
Cells Need Energy 1. Organisms obtain energy from food
Chapter 9: Cellular Respiration. Nutrition Energy in most food originally comes from the sun 2 ways to get food –Autotrophs or Producers Make their own.
Cellular Respiration Chapter 9.
+ Cellular Respiration & Fermentation 4.4, & 4.6.
ENERGY AND CELLULAR RESPIRATION. Energy n Chemical energy – found in the bonds of food n Activation energy – energy needed to get a reaction started n.
+ Cellular Respiration & Fermentation 4.4, & 4.6.
Cellular Respiration.
Cellular Respiration & Fermentation
Photosynthesis & Respiration
Do Now What is energy? How do we get energy?
Miss Colabelli/Mrs. McDonough
ADP, ATP and Cellular Respiration
Cellular Respiration ATP
Cellular Respiration.
Energy in Living Organisms: Cellular Respiration
Photosynthesis & Cellular Respiration
Cellular Energy.
Cellular Respiration.
Let’s recall Photosynthesis!
Photosynthesis & Cellular Respiration
Unit 4: Bioenergetics BIO.A.3.1 Identify and describe the cell structures involved in processing energy. BIO.A Describe the fundamental roles of.
Cellular respiration Aerobic Anaerobic.
How do living things release energy?
Cellular Respiration The overall process of cellular respiration converts sugar into ATP using oxygen.
Overview of Cellular Respiration
Photosynthesis & Respiration
Cellular Respiration.
Cellular Respiration.
Photosynthesis & Respiration
Cellular Respiration Chapter 9
carbon dioxide + water glucose + oxygen
2.2 d Cellular Respiration: How do your cells get energy?
PHOTOSYNTHESIS CELLULAR RESPIRATION
oxygen+ glucose carbon dioxide+ water +energy
Cell Respiration.
Flow of Energy through the Respiration Process
Releasing Chemical Energy
Notes: Cellular Respiration
Chemical Pathways.
Cellular Respiration.
Chapter 9 Energy in a Cell.
NOW IN NOTES… Summarize the basic aerobic and anaerobic processes of cellular respiration and interpret the chemical equation for cellular respiration.
Cellular Respiration.
Cellular Respiration Adenosine Triphosphate (ATP) is the basic energy source of all cells.
Cellular Respiration.
oxygen+ glucose carbon dioxide+ water +energy
Cell Energy.
Cellular Respiration.
oxygen+ glucose carbon dioxide+ water +energy
Cellular Respiration.
RESPIRATION Respiration is the process by which the chemical bond energy stored in nutrients is released for use in cells.
ATP, Photosynthesis and Cellular Respiration
PHOTOSYNTHESIS & RESPIRATION
Math Minute 1  .
Cellular Respiration Textbook chapter 9.
Photosynthesis and Cellular Respiration
BELL RINGER How do plants get energy?
Good Morning!!! Finish your final observations on data table….
Cellular Respiration Unit
Chapter 8 Photosynthesis & Chapter 9 Cellular Respiration.
Cellular Respiration Chapter 9
Photosynthesis & Cellular Respiration
Cellular Respiration.
Initial breaking down of Glucose Occurs in the CYTOPLASM MAKES 2 ATP
Cellular Respiration ATP
Cell Energy & Reproduction
Presentation transcript:

Photosynthesis and Respiration

Photosynthesis: Extremely important in relation to energy for life Energy comes from ‘food’ but it really all starts with energy from the Sun ‘Plants’ are autotrophs, other organisms (including humans) are heterotrophs

I’m talking about more than trees…

Photosynthesis creates stored energy in the form of sugars (ex: glucose, starch etc). Sunlight + CO2 + water  Sugar + oxygen

Examples of stored energy in chemical compounds: wax to be burned food to be digested ATP to be broken up Breaking bonds releases energy Two stages of photosynthesis: 1st: produces O2 and ATP 2nd: produces ADP and sugars

1. List six things that energy from ATP can be used to do. 2. Compare the energy-storing capacity of molecules of ATP to molecules of glucose. 3. What was the original thought-provoking question that ultimately led to the discovery of photosynthesis? 4. Describe the experiment and findings (conclusions) of: A) Jan von Helmont, B) Priestley, C) Ingenhousz 5. a) What substance allows plants to photosynthesize? b) In what organelle is this substance found? 6. Why are plants green in colour? 7. a) What is the name of the stage in photosynthesis that doesn’t require light? B) Why is it named this? 8. Name three factors that affect photosynthesis rates.

Stages/steps of Cellular Respiration: 1) Glycolysis: The lysis (‘breaking’) of glycogen (a bunch of glucose). 1 molecule glucose  2 molecules pyruvic acid. Occurs in cytoplasm. Then: 2) Kreb’s cycle: Pyruvic acid is broken up to release energy (ATP). CO2 is a by product and is released in your breath. Occurs in mitochondria. and then: 3) Electron transport chain: High energy electrons and hydrogen ions move across the membrane of the mitochondrion. In the process, they turn ADP into huge amounts of ATP.

Glycolysis  small amount of energy Other two stages  lots of energy If it all happened in one step, too much energy would be lost/wasted to heat Cells therefore do it slowly, in several steps, using small bits of energy to make ATP. Efficiency still only about 38%, the other 62% is released as heat.

What if there is no oxygen present? If glycolosis happens anaerobically, cellular respiration will not happen; it will lead to fermentation instead: A few examples: a) Alcoholic fermentation: Produces ethyl alcohol and CO2 gas (yeast to rise bread, make alcohol) b) Lactic acid fermentation: -Lactic acid accumulates in muscles when the body cannot supply enough oxygen (rapid exercise). -To produce cheese, yogurt etc. with the help of prokaryotes.

Types of cells that do it: Tying it all together: Photosynthesis: Cellular Respiration: Function: Location: Reactants: Products: Equation: Types of cells that do it:

Tying it all together: Function: Location: Reactants: Products: Photosynthesis: Cellular Respiration: Function: Energy storage Energy release Location: Chloroplasts Mitochondria Reactants: CO2 and H2O Glucose(C6H12O6) +O2 Products: Equation:  Glucose + O2 Glucose + O2  Organisms that do it: Plants, algae, bacteria (autotrophs only) All eukaryotes, some prokaryotes

Page 217: #’s 1-8 Page 237: #’s 1-4, and 7, 8, 10, 13 Review questions: Page 217: #’s 1-8 Page 237: #’s 1-4, and 7, 8, 10, 13

Page 217, questions 1-8: 1. b (plants) 2. b (ATP) 3. b (van Helmont) 4. d (water and carbon dioxide) 5. c (reflects green light) 6. a (sugars and oxygen) 7. d (chloroplast, plastid) 8. a (light absorption)

Page 237 answers: 1. c (ATP) 2. b (glycolosis) 3. b (cellular respiration) 4. c (all of the above) 7. c (mitochondrion) 8. b (convert ADP to ATP) 10. b (oxygen debt) 13. if oxygen, cellular respiration continues if no oxygen, fermentation continues