Download AP Biology Discussion Notes

AP Biology Discussion
Notes
Monday 12/06/2016
Goals for the Day
• Begin understanding the process of
cellular respiration
12/05 Question of the Day:
Does flipping branches at a branch
point on a phylogentic tree change the
meaning? Explain your answer.
Redraw our tree of the 3 domains of life
in a different way, that still means the
same thing. Make sure to include
characteristics!
Grab a Partner
Send one person up to get a set of Cards.
Work together to lay out the cards so that
they show the reaction for Photosynthesis
Overview: Life Is Work
• Living cells require energy from outside
sources
• Some animals, such as the chimpanzee, obtain
energy by eating plants, and some animals
feed on other organisms that eat plants
© 2011 Pearson Education, Inc.
Figure 9.1
• Energy flows into an ecosystem as sunlight
and leaves as heat
• Photosynthesis generates O2 and organic
molecules, which are used in cellular
respiration
• Cells use chemical energy stored in organic
molecules to regenerate ATP, which powers
work
© 2011 Pearson Education, Inc.
Figure 9.2
Light
energy
ECOSYSTEM
Photosynthesis
in chloroplasts
CO2  H2O
Cellular respiration
in mitochondria
ATP
Heat
energy
Organic
 O2
molecules
ATP powers
most cellular work
Chemical Equation for
Cell Respiration
C6H12O6 + O2  CO2 + H2O + ATP
• Label the reactants & Products
• What organisms do cellular
respiration? Why (What is the KEY
product)?
Cellular respiration
• Do ALL organisms need to do this?
• Do ALL organisms do it the same way?
Figure 9.18
Glucose
CYTOSOL
Glycolysis
Pyruvate
No O2 present:
Fermentation
O2 present:
Aerobic cellular
respiration
MITOCHONDRION
Ethanol,
lactate, or
other products
Acetyl CoA
Citric
acid
cycle
Figure 9.16
Electron shuttles
span membrane
2 NADH
Glycolysis
2 Pyruvate
Glucose
MITOCHONDRION
2 NADH
or
2 FADH2
2 NADH
Pyruvate oxidation
2 Acetyl CoA
Citric
acid
cycle
 2 ATP
 2 ATP
Maximum per glucose:
CYTOSOL
6 NADH
About
30 or 32 ATP
2 FADH2
Oxidative
phosphorylation:
electron transport
and
chemiosmosis
What are our major
biomolecules & what are their
monomers?
Figure 9.19
Proteins
Carbohydrates
Amino
acids
Sugars
Glycolysis
Glucose
Glyceraldehyde 3- P
NH3
Pyruvate
Acetyl CoA
Citric
acid
cycle
Oxidative
phosphorylation
Fats
Glycerol Fatty
acids
Cellular respiration Pre-lab
Work Order for Today
1. Cell Respiration Pre-Lab
2. Chapter 26 pg. 536 – Key terms & Main
Ideas
– 26.1 *This is what we discussed as a class, so just
add the noted figure…
• 26.5
– 26.2
• 26.8,26.9,26.10,26.11
– 26.3
• 26.4 &26.5 – Not responsible for but might find
interesting
– 26.6