notes 7.2 – aerobic and anaerobic respiration
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Notes 7.2 – Aerobic and Anaerobic Respiration. Cell Respiration Part 2 Page 131. Standards. CLE 3210.3.3 Investigate the relationship between the processes of photosynthesis and cellular respiration. - PowerPoint PPT PresentationTRANSCRIPT
Notes 7.2 – Aerobic and Anaerobic
RespirationCell Respiration Part 2
Page 131
Standards
CLE 3210.3.3 Investigate the relationship between the processes of photosynthesis and cellular respiration.SPI 3210.3.3 Compare and contrast photosynthesis and cellular respiration in terms of energy transformation.
Objectives
Identify the reactants and products of the Krebs CycleEvaluate situations when a cell must use anaerobic vs. aerobic respirationIdentify the reactants and products of the Electron Transport ChainSummarize the major events in aerobic and anaerobic respiration
Find a Partner
With your Partner:Review Glycolysis:
Reactants:
Products:
Location:
Glucose, 2 ATP and NAD+
Pyruvate , H2O, 4 ATP, and NADH
Cytosol
Review: What happens to Pyruvate?Two possible paths:
Pyruvate
Aerobic Respiration
(mitochondria)
Fermentation (cytosol)
Lots of ATP
Few ATP
Overview of Aerobic Respiration
Two Main Parts: Krebs Cycle (citric acid cycle) – uses pyruvateElectron Transport Chain – uses NADH
Krebs Cycle – (citric acid cycle)
Reactants:
Products:
Pyruvate (pyruvic acid)
ATP – goes into cytosolCO2 – is releasedNADH2 – Goes to ETC (electron transport chain)
Electron Transport Chain (ETC)
Reactants:
Products:
NADH2 ; FADH2 oxygen
34 ATP molecules2 molecules H2O
With your Partner
Which reaction provides the greatest net gain of ATP?
Energy Gain
With your Partner
Even though plant cells make some ATP during photosynthesis why do they need cell respiration as well?
What happens when cells are without oxygen?
Fermentation (Anaerobic Respiration)
With your Partner
Brainstorm some situations when a cell could be devoid of Oxygen
Fermentation (anaerobic)
Two types of fermentation:Lactic Acid fermentation:
Alcohol fermentation:
ATP Yield = 2
Performed by human muscle cells and some microorganisms - used to make cheeses, yogurt, sour cream.
Performed by some microorganisms – used to make ethyl alcohol.
With your Partner:
Determine what all of these have in common.
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