Download An Overview of Cellular Respiration 2017

Cell Resp overview2017.notebook
January 09, 2017
Staple take‐home quiz to digestion activity and turn in‐ THEN
QOD: 1/6/17
Write down any organism on this list that uses the process of respiration:
human
tomato plant
chick inside egg
apple tree
grass
mushroom
worm
amoeba
duck
fish
horse
bacteria
frog­eggs
human body cell
germinating seed
honeybee
Explain your thinking. How did you decide whether an organism uses the process of respiration?
Pair with your partner and share your thought processes
Apr 23­12:40 PM
Put the following in your TOC
An Overview of Cellular Respiration
Learning Target: I can explain how the energy in food is converted to energy my body can use for work
Feb 5­2:23 PM
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Cell Resp overview2017.notebook
January 09, 2017
Evidence Collection:
1. You have read two Essays on pp. 362­367 and completed the chart. This was your pre­work (I will collect and stamp­ glue in science notebook when returned)
2. In pairs, get laptop and complete the tutorials. Follow the directions and record on your paper as you go­ once tutorials are done, you are done for today. Use Internet Explorer
Check battery before starting
For #11e: Another name for the Kreb's cycle is Citric Acid Cycle STOP
when you get to Analysis (unless you want to get ahead for Monday) Feb 5­2:28 PM
Do Now 1/9/17
If a statement is FALSE, write the correction as well
1. T/F­ Your cells can use energy from the foods you eat directly after digestion
2. T/F­ ATP stands for adenosine triphosphate
3. T/F­ chemical bonds represent kinetic energy
4. T/F­ Glycolysis alone produces enough ATP for all organisms
5. T/F­ An anaerobic process requires oxygen
Feb 9­12:59 PM
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Cell Resp overview2017.notebook
January 09, 2017
Do Now: 1/9/17
If a statement is FALSE, write the correction as well
1. T/F­ Your cells can use energy from the foods you eat directly after digestion False­must be converted to chemical energy
2. T/F­ ATP stands for adenosine triphosphate True
3. T/F­ chemical bonds represent kinetic energy False­ potential energy
4. T/F­ Glycolysis alone produces enough ATP for all organisms False­ only enough for one celled organisms
5. T/F­ An anaerobic process requires oxygen False­ does not require oxygen
Feb 9­12:59 PM
Do Now #2: 1/9/17­ What goes in the blanks? Discuss with partner. Discussion only­ do not have to record (this is review)
Where is the energy stored in the ATP molecule?
Mar 29­8:23 AM
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Cell Resp overview2017.notebook
January 09, 2017
White­board questions: answer w/partner
1. Stored energy is called
energy, while the energy of motion is
called
energy.
2. The energy in
must be
converted to the energy in the
molecule
before cells can use it.
Mar 7­8:55 AM
White­board questions: answer w/partner
1. Stored energy is called potential
energy, while the energy of motion is
called kinetic energy.
2. The energy in food must be
converted to the energy in the
molecule ATP before cells can use it.
Mar 7­8:55 AM
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Cell Resp overview2017.notebook
January 09, 2017
Cellular Respiration Red­Pen Revision­ in notebook or on chart­ only add what you need!!
Living things, from bacteria to humans, use similar pathways­ one of these is:
Cellular Respiration: process of enzymes converting the energy in macromolecules (foods like starch or glycogen) or smaller molecules (like glucose) into usable form (ATP) So what does ATP stand for?
Apr 23­4:55 PM
ATP
adenosine triphosphate
Feb 4­11:15 AM
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Cell Resp overview2017.notebook
January 09, 2017
Why do we need it again?
ATP ADP + Phosphate + ENERGY
Energy is released for cell activity (muscle contraction, nerve impulse, active transport, dehydration synthesis,....)
But, not very efficient­ "lose" 90% in HEAT
Energy + ADP + Phosphate ATP
A reversible reaction! Where does the energy come from?
An example of ATP in action...
Feb 4­11:19 AM
proteins
Muscle Contraction
covers actin binding sites
ATP at work!
3 protein complex
ions
+ Ca2+ unlocks actin binding sites and contraction occurs
adenosine diphosphate
adenosine triphosphate = + phospate + energy
Feb 4­11:18 AM
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Cell Resp overview2017.notebook
January 09, 2017
To get all this ATP (and it is A LOT!!!) almost all living things follow the cellular respiration pathway­
and it goes something like this.....
Feb 4­11:27 AM
What molecule do we need to start Cellular Respiration?
Glucose
Sugar
Sweet
Outputs
C6H12O6 + 6O2
6CO2 + 6 H2O + energy
Inputs
Cellular Respiration
Heat 38 ATP
3 Stages
Apr 26­8:00 PM
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Cell Resp overview2017.notebook
January 09, 2017
White­board questions: answer w/partner
3. The first stage of cellular respiration
is glycolysis. It occurs in the
and
produces ATP molecules.
4. Fill in the blanks in the following equation:
ADP +
energy
Mar 7­8:57 AM
White­board questions: answer w/partner
3. The first stage of cellular respiration
is glycolysis. It occurs in the cytoplasm and
produces 2 net ATP molecules.
4. Fill in the blanks in the following equation:
ATP
ADP + P
energy
Mar 7­8:57 AM
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Cell Resp overview2017.notebook
January 09, 2017
Process goes through 3 stages:
Stage 1 p. 364 Glycolysis Breaking down of Glucose
­anaerobic (no O2 reqired)
­occurs in cytoplasm
C1­C2­C3­C4­C5­C6
ENERGY as 4 ATP (net gain 2 ATP)
If no O2 then Fermentation occurs
Apr 23­4:59 PM
White­board questions: answer w/partner
5. After glycolysis, pyruvate can have 2 fates
(or enter 2 pathways.) What are they?
Pyruvate
6. What determines which pathway
pyruvate takes?
Mar 7­9:51 AM
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Cell Resp overview2017.notebook
January 09, 2017
White­board questions: answer w/partner
5. After glycolysis, pyruvate can have 2 fates
(or enter 2 pathways.) What are they?
Pyruvate
Fermentation
Respiration
alcoholic or lactic acid (lactate)
6. What determines which pathway
pyruvate takes? presence of oxygen
Mar 7­9:51 AM
If O2 present we go to?
STEP 2: p. 365 Kreb's cycle
C1­C2­C3 x 2
­occurs in mitochondria
­most CO2 produced here
C1­C2
2 ATP
Electron/Hydrogen carriers
Apr 23­5:08 PM
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Cell Resp overview2017.notebook
January 09, 2017
http://www.nclark.net/ElectronTransportChain.mp3
Step 3: p. 366 Electron Transport System (ETS)
Electron/Hydrogen carriers
­creates most ATP
­O2 final electron acceptor
ETS
e­ and H+ and O H2O + 34 ATP
energy of electrons is converted into the energy in chemical bonds via chemiosmosis and enzymes
Apr 23­5:20 PM
White­board questions: answer w/partner
7. Which stage of cellular respiration
produces the most ATP? Glycolysis, Kreb's
cycle, or electron transport system?
8. Where in your body do these processes
take place? Choose the best response from the
choices below:
B.
A.
C.
Mar 7­9:53 AM
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Cell Resp overview2017.notebook
January 09, 2017
White­board questions: answer w/partner
7. Which stage of cellular respiration
produces the most ATP? Glycolysis, Kreb's
cycle, or electron transport system?
8. Where in your body do these processes
take place? Choose the best response from the
choices below:
B.
A.
C.
Mar 7­9:53 AM
What controls rate of ATP production?
More ATP ADP signals more energy use, so as ADP respiration rate increases
Negative feedback!
Also controlled by O2 levels­ if enough is present to meet energy demands = aerobic respiration
If not = anaerobic energy production is needed
Apr 23­5:31 PM
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Cell Resp overview2017.notebook
January 09, 2017
In humans, we call this lactic acid fermentation p. 368
GLYCOLYSIS
2 ATP (net)
PYRUVATE
LACTIC ACID
C1­C2­C3
C1­C2­C3
Lactic acid can be converted back to glucose by liver and other cells, but this process only gives 2 ATP/Glucose
Used to supplement aerobic respiration, will not support humans (or anything much larger than 1 cell) on its own Apr 23­5:36 PM
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