Lesson TwelveRecipe for Energy—Cellular Respiration

There are four different experiments in thislesson. Will you pick one and do a test, or dothis for each experiment? See the NOTE onp 141 of the Teacher’s Manual. Plan on 3-4days for this lesson.Teacher Tips:

Add baking soda to make it solution more blue and ammonia to make it more yellowLarger test tubes make it easier to seeCover fire safety pg 100Use 25mL not 10mL graduated cylindersCan also use pH paper to show changesHave a control test tube of bromthymal blue

BellworkRead “Oxidation—One Process, Two Forms” p 99 SG and define the

words oxidation, combustion and cellular respiration(Try to resist the urge to define the terms yourself as you go over the

bellwork. Use them, but don’t necessarily try to nail them down at this time. Remember, we are engaging, not explaining!)

Objectives•Compare and contrast combustion and cellular respiration•Use a model to show the flow of air and the parts of combustion•Determine the form of energy released in exhalation•Use an indicator to detect waste products in exhaled air

Getting Started pg 100Question

What happens if a burning candle is covered with foil?

HypothesisIf a burning candle is covered with foil then it will

_______ because ______MaterialsCandle, beaker, block, bromthymal blue, foil,

graduated cylinder

ProcedureSafety tips p 100 SGGetting Started p 100Follow instructions in steps 3-6Observations- answer questionsStep 4 (5 questions)Step 5 (3 questions)Step 6 (3 questions)

Answer the original questions and restatehypothesis as a conclusionNext Question (end of day 1?)

Inquiry 12.1Question

What happens to the temperature of water when exposed to exhaled air?

Hypothesis If water is exposed to exhaled air then the temperature will___________ because __________

Procedure Follow steps 1-4 on p 102

Data/ Observation- answer questionsStep 1 (3 ques.)Step 3 (4 ques.)

ConclusionAnswer original question and restate hypothesis as a conclusion

Next Question

Inquiry 12.2 p 103

QuestionWhat is a waste product of cellular respiration?

HypothesisIf _____ is a waste product then the solution will turn _________

because ____________

Procedure - p 103Teacher demonstrates this procedure-HEALTH CONCERNS

DataAnswer question in step 7 – (4 questions)

ConclusionStatement of results

Next Question

Inquiry 12.3 p 104Question

Can carbon dioxide pass through a membrane?

HypothesisIf carbon dioxide is _________ then it will pass through a membrane because ____________

MaterialsCarbonated water, funnel, graduated cylinder, membrane, string test tube and rack,

bromthymol blue,

Procedure - Follow steps A-F under step 2 p 104 (use 13 mL of carbonated water)Data

Answer questions 1-4 under step F

ConclusionAnswer original question and restate hypothesis as conclusion

Next Question

ReadingSpies-Why So Many? p 108

Vocabularyalveolibronchicapillariesmitochondriacellular respirationoxygencarbon dioxidenutrientsenergy

Reflections(may spend a whole day answering and

reviewing reflection questions) Step 2 Questions A – G

Venn Diagram: Combustion and Cellular Respiration (could be homework)

(Preparation for lesson 15 p 148 Teacher’s Manual)