respiration
TRANSCRIPT
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One of the characteristics of living organisms.
Clue:
O NE S P I R A T IR
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Objective 1Objective 1
To explain what respiration isTo explain what respiration is
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What is respiration?What is respiration?
1.1. The release of The release of energyenergy 2.2. when when food substancesfood substances are broken down by are broken down by 3.3. oxidationoxidation into into simplersimpler substances substances 4.4. such as such as carbon dioxidecarbon dioxide and and water.water.5.5. It is a chemical process.It is a chemical process.
DO YOU THINK PLANT RESPIRE?DO YOU THINK PLANT RESPIRE?
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Objective 2Objective 2
To state the two types of respirationsTo state the two types of respirations To define what is aerobic respirationTo define what is aerobic respiration
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RespirationRespiration
AerobicAerobic Anaerobic Anaerobic
There are two types of respiration:
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Aerobic respirationAerobic respiration
1.1. The release of a relatively The release of a relatively largelarge amount of amount of energyenergy
2.2. by the breakdown of food substancesby the breakdown of food substances
3.3. in the in the presencepresence of oxygen of oxygen
Definition:
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Objective 3Objective 3
To state where aerobic respiration takes placeTo state where aerobic respiration takes place To construct the word equation for aerobic To construct the word equation for aerobic
respirationrespiration
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Aerobic Respiration occurs at the cell Aerobic Respiration occurs at the cell in the ….in the ….
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MitochondriaMitochondria
Glucose
O2
Enzyme
Co2EnergyWater
Enzyme
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AeroAerobic Respirationbic Respiration
Breakdown of food substancesBreakdown of food substances Occurs in the mitochondriaOccurs in the mitochondria Similar to combustion of fuelSimilar to combustion of fuel Can be written in a word equation:Can be written in a word equation:
Glucose Oxygen +Carbon dioxide+
Relatively lots of energy
Water +
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Objective 6Objective 6
To understand what is inspiration and To understand what is inspiration and expirationexpiration
To compare the composition of air in inspired To compare the composition of air in inspired and expired airand expired air
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Inspiration Inspiration
Air breathed in
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InspirationInspiration
Occurs when air is taken into the lungsOccurs when air is taken into the lungs
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ExpirationExpiration
Air breathed out
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ExpirationExpiration
Occurs when air passes out of the lungsOccurs when air passes out of the lungs
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Make a Guess…Make a Guess…
From your knowledge state the From your knowledge state the differences between inspired and differences between inspired and
expired air.expired air.
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Experiment 1Experiment 1
Inspired Air
Inspired Air
Expired Air
Expired Air
1st hour2nd hour
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Let’s Try…Let’s Try…
Lime water experimentLime water experiment
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Experiment 2Experiment 2
AirVacuum
PumpLime WaterExpired Air
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Experiment 3Experiment 3
Expired air
MirrorWater droplets
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Components of inspired and expired Components of inspired and expired airair
Components (%)Components (%) Inspired air (%)Inspired air (%) Expired air (%)Expired air (%)
OxygenOxygen About 21About 21 About 16About 16
Carbon dioxideCarbon dioxide About 0.03About 0.03 About 4About 4
NitrogenNitrogen About 79About 79 About 79About 79
Water VapourWater Vapour variablevariable saturatedsaturated
TemperatureTemperature Atmospheric Atmospheric temperaturetemperature
37 degree celsius37 degree celsius
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Review TimeReview Time
Why are the amounts of oxygen, carbon Why are the amounts of oxygen, carbon dioxide and water vapour different in dioxide and water vapour different in inspired and expired air?inspired and expired air?
Answer: Respiration uses oxygen and produces Answer: Respiration uses oxygen and produces carbon dioxide and water. Thus, the expired carbon dioxide and water. Thus, the expired
air contains air contains less oxygenless oxygen and and more carbon more carbon dioxide and waterdioxide and water
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You cannot live without You cannot live without doing it.doing it.BREATHINGBREATHING
CLUE:
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Objective 7Objective 7
To define what breathing isTo define what breathing is
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BREATHING AND RESPIRATIONBREATHING AND RESPIRATION
Is breathing and respiration the same?Is breathing and respiration the same? Respiration is a chemical process.Respiration is a chemical process. In aerobic respiration, we need oxygen.In aerobic respiration, we need oxygen. How do we get the oxygen?How do we get the oxygen?
BREATHINGBREATHING Inhaling (breathe in) takes in oxygenInhaling (breathe in) takes in oxygen Exhaling (breathe out) takes out carbon Exhaling (breathe out) takes out carbon
dioxide and waterdioxide and water
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BREATHINGBREATHING
Breathing is a mechanical process Breathing is a mechanical process
DEFINITION OF BREATHING: DEFINITION OF BREATHING: Mechanical process by which oxygen enters the Mechanical process by which oxygen enters the
lungs from the air outside and carbon dioxide is lungs from the air outside and carbon dioxide is removed from the lungs into the environmentremoved from the lungs into the environment
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Objective 8Objective 8
To know what happen during breathing in and To know what happen during breathing in and outout
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BREATHING INBREATHING IN
Ribs swing upwards and outwardsRibs swing upwards and outwards Diaphragm moves downward and flattenDiaphragm moves downward and flatten
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BREATHING OUTBREATHING OUT
Ribs return to original positionRibs return to original position Diaphragm relaxes and arches upwardsDiaphragm relaxes and arches upwards
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Objective 9Objective 9
To compare between respiration and breathingTo compare between respiration and breathing
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Respiration and breathingRespiration and breathing
RespirationRespiration BreathingBreathing
Takes place all the timeTakes place all the time Takes place all the timeTakes place all the time
Take place in every cellTake place in every cell Take place in the lungsTake place in the lungs
A process that breaks down A process that breaks down food to release energyfood to release energy
A process of gaseous A process of gaseous exchange with the exchange with the
environmentenvironment
Uses oxygen obtained from Uses oxygen obtained from breathingbreathing
Takes in oxygen from Takes in oxygen from environmentenvironment
Produces carbon dioxideProduces carbon dioxide Removes carbon dioxide Removes carbon dioxide produced during respirationproduced during respiration
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Objective 10Objective 10
To understand how the human respiratory To understand how the human respiratory system workssystem works
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Objective 11Objective 11
To explain how plants take in oxygen and To explain how plants take in oxygen and remove carbon dioxideremove carbon dioxide
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Plant Respiratory SystemPlant Respiratory System
Plants respire all the time just like other living Plants respire all the time just like other living organismsorganisms
During the day plant respire as well as During the day plant respire as well as photosynthesizephotosynthesize
During the night photosynthesis cannot take During the night photosynthesis cannot take place, plant only respire.place, plant only respire.
Oxygen is taken in and carbon dioxide is Oxygen is taken in and carbon dioxide is released through the stomatareleased through the stomata
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Objective 12Objective 12
To differentiate between photosynthesis and To differentiate between photosynthesis and respirationrespiration
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PhotosynthesisPhotosynthesis RespirationRespirationProcess that makes foodProcess that makes food Process that breaks down food to Process that breaks down food to
release energyrelease energy
Takes place in plants onlyTakes place in plants only Takes place in all living thingsTakes place in all living things
Takes place only when there is Takes place only when there is lightlight
Takes place all the timeTakes place all the time
Needs chlorophyllNeeds chlorophyll Does not need chlorophyllDoes not need chlorophyll
Takes in carbon dioxideTakes in carbon dioxide Gives out carbon dioxideGives out carbon dioxide
Gives out oxygenGives out oxygen Takes in oxygenTakes in oxygen
Takes in and stores energyTakes in and stores energy Energy is releasedEnergy is released
Uses carbon dioxide and waterUses carbon dioxide and water Uses glucose and oxygenUses glucose and oxygen
End products – glucose and End products – glucose and oxygenoxygen
End products – carbon dioxide End products – carbon dioxide and waterand water
Takes place in chloroplastsTakes place in chloroplasts Takes place in mitochondriaTakes place in mitochondria