Biology: Energy of Metabolism
Loosely based on: http://www.cfep.uci.edu/cspi/docs/lessons_secondary/Cell%20Respiration%20Fermentation.pdf
Essential Questions:
What is happening? (micro/macro)
What affects the rate?
Where does the energy come from?
Performance Task:
HS-LS1-7.
Use a model to illustrate that cellular respiration is a chemical
process whereby the bonds of food molecules and oxygen
molecules are broken and the bonds in new compounds are
formed resulting in a net transfer of energy.
Key Ideas:
- Both the burning of fuel and cellular digestion in plants and animals involve chemical reactions with oxygen
that release stored energy. In these processes, complex molecules containing carbon react with oxygen to
produce carbon dioxide and other materials.
- Develop an evidence based explanation for phenomena
Engage:
- plants, venus fly trap, salt & yeast
- Brainstorm: How do they get their energy?
Explore:
- Which combination releases the greatest amount of energy?
* talk them around to a control and repeated trials averaged if they don’t
do it initially
- Chart in groups:
- Claim
- Evidence
*Wouldn’t evidence be better quantified? Maybe in a table? 
- Justification
- Draw what is happening in a smaller (molecular?) level
- Carousel all groups for ideas
- Modify models
Explain:
- video clips, reading, discussion
Extend/Elaborate:
- create models of the chemical reactions occurring
Evaluate:
- formative during all components of activity
- assess concept attainment: drawing, writing, making multimedia explanation
(animation, video, etc.)
Make
Crosscutting Concept
Explicit
- What is the path of the
energy? Where is it coming
from? Where is it going?
- Ultimately, what happens to
the energy? (created?
destroyed?)
- Why did you try this? What
were you thinking would
happen?
Crosscutting Concept Focus: Include Explicitly
Hints:
*Pre-plan questions and think about how they will respond
*Expect a range and level your questioning
Explore:
Provide groups with materials and encourage them to try different experiments to answer the question.
What is happening?
What affects the rate?
Where does the energy come from?
scales
spoons
little cups
balloons
string
scissors
rulers
yeast
sugar
salt
funnels
Splenda?
poster paper
markers
(timers = phones)
varying temps of water
Ideas
- weigh before and after
- measure volume of the balloon before and after
- measure time it takes to reach a certain volume
- vary amounts of yeast, or sugar, or salt
- vary temperature of water
- vary amount of water
Explain
Video
Crash Course: ATP & Respiration: https://www.youtube.com/watch?v=00jbG_cfGuQ
Bozeman: Anaerobic Respiration: https://www.youtube.com/watch?v=cDC29iBxb3w
Ameoba Sisters: Cellular Respiration: https://www.youtube.com/watch?v=4Eo7JtRA7lg
Reading
http://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa/respiration/respirationrev_print.shtml (basic)
http://www.saylor.org/site/wp-content/uploads/2011/03/Cellular-respiration-.pdf (extended)
textbook
Lecture