Cellular Respiration

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Cellular Respiration

• Harvesting the stored energy from food!

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Glycolysis

• Glycolysis does not need oxygen as part of any of
  its chemical reactions. It serves as a first step
  in a variety of both aerobic and anaerobic
  energy-harvesting reactions.
• Glycolysis happens in the cytoplasm of cells, not
  in some specialized organelle.
• Glycolysis is the one metabolic pathway found in
  all living organisms.

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Break Glucose
ATP USED
ATP Created
ATP Created
New Products to either go through aerobic
respiration or anaerobic respiration
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Aerobic Respirationusing oxygen to release
stored energy
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MitochondriaPowerhouse of the cell
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Overall Equation

• Chemical equation
• C6H12O6 6 O2 6 H2O 6 CO2
  (energy)
• Word equation
• Glucose oxygen water carbon dioxide
  
• 
  energy

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Exercise Lab
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Krebs Cycleadditional 2 ATP

• The Krebs cycle occurs in the mitochondrial
  matrix and generates a pool of chemical energy
  molecules (ATP, NADH, and FADH2) from the
  oxidation of pyruvic acid, the end product of
  glycolysis.

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Electron Transport Chain34 additional ATP

• The electron transport chain (ETC) consists of a
  series of proteins, embedded in the inner
  mitochondrial membrane -cristae.

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Anaerobic RespirationA.K.A fermentation

• Two different types of fermentation
• Lactic acid
• No Co2 produced
• Alcoholic
• Co2 produced
• Both types produce 2 additional ATP molecules

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Anaerobic continued

• Happens directly in the cytoplasm of the cell.
• Humans ferment lactic acid in muscles where
  oxygen becomes depleted. This lactic acid causes
  the muscle stiffness cramps you feel after
  beginning exercise programs.

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Capturing energy from the sun releasing the
energy from the sun
energy
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Similarities

• Respiration and Photosynthesis both have an
  electron transport chain and a cycle. (Calvin or
  Krebs)
• Both synthesize ATP molecules with an ATP
  synthase. 
• Both produces each other's needed reactants.
• Every single living organism undergoes
  Respiration.

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Quiz Time

• Using your clickers, answer the following
  questions! Remember to hit send!!

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Question 1

• True or False
• Cellular respiration is a chemical process that
  releases the stored energy in food.

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Question 2

• True or False
• Glycolysis is a process that happens only in the
  mitochondria.

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Question 3

• Glycolysis produces all of the following EXCEPT
• a. ATP b. pyruvic acid
  c. NADH d. NADPH

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Question 4

• Glycolysis happens all of the following EXCEPT
• a. plants b. animals c.
  bacteria d. fungus e. protista e. none of
  the above

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Question 5

• The presence of oxygen allows pyruvic acid to
  enter into
• a. the mitochondria b. the
  chloroplast c. the golgi
  apparatus
• d. the nucleus

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Question 6

• The Krebs cycle produces all of the following
  EXCEPT
• a. ATP b. FADH2 c. NADH
  d. glucose

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Question 7

• The respiration electron transport chain is found
  in the ________ and it gets the electrons from
  _______
• a. matrix, ATP NADPH b. cristae,
  FADH2 NADH c. thylakoid,
  NADH ATP d. none of the above

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Question 8

• Fermentation occurs in the ___________ and there
  are ____ main types.
• a. mitochondria, 2 b.
  chloroplast, 3 c. cytoplasm,
  2 d. mitochondria, 1

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Question 9

• True or False
• Muscle soreness and cramps are caused by
  alcoholic fermentation.

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Question 10

• Aerobic respiration photosynthesis share all of
  the following EXCEPT
• both have an electron transport chain and a
• cycle.
• b. both synthesize ATP molecules with ATP
  synthase. 
• c. both produces each other's needed reactants.
• d. every single living organism undergoes both
  processes.