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© Boardworks Ltd 20041 of 20 © Boardworks Ltd 20051 of 24
The breathing system is used by the body to get the oxygen
needed for respiration.
عملية تبادلهوالتنفس و الجو المحيط به الكائن الحي للغازات بين
عملية يتم فيها ايصال االكسجين إلى وهيخاليا الجسم لالستفادة منه، و التخلص
من ثاني اكسيد الكربون . الجسم خارج الىبطرده
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 20052 of 24
Key wordsobjectives
Cellular Respiration
Aerobic respiration
An aerobic respiration
*Know the definition of
cellular respiration.
•Give the word and formula
equations for aerobic
respiration.
•Mention two types of
cellular respiration.
التنفس الخلويCellular Respiration
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 20053 of 24
The blood carries oxygen and glucose to all the body’s cells so that respiration happen.
جزء أي فيتحدث بالخلية
عملية التنفس؟؟؟
Mitochondrion
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 20054 of 24
Glucose + oxygen carbon dioxide + water + energy
C6 H12 O6 + 6 O2 6 CO 2 + 6 H 2O + 673 K
The Equations
Cellular Respiration :
is the breakdown of glucose to make energy using oxygen .
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 20055 of 24
We have two types of respiration
Aerobic respirationالهوائـــــــــي التنفس
االكسجين وجود في
An aerobic respiration الالهوائــــــي التنفس
االكسجين وجود عدم في
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 20056 of 26
When the body is able to supply the cells with the oxygen and glucose that they need, it carries out aerobicaerobic respiration.
Anaerobic respirationWhen the body cannot supply the cells with the oxygen needed to break down glucose, then it has to carry out anaerobic anaerobic respiration. Energy is released without oxygen:
Aerobic and anaerobic respiration
Aerobic respiration
carbondioxideglucose oxygen water energy
lacticacid energyglucose
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 20057 of 24
Key wordsobjectives
1-Aerobic
respiration
2-oxygen
3-temperature
*Know that the rate of
respiration is affected by
temperature & oxygen
concentration
Factors affecting of cellular respiration
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 20058 of 24
Oxygen األكسجين
و هوائيا تنفسا النباتات تتنفس
المحيط بالجو األكسجين نقص
النباتات ثأثيرات يكون بهذه له
باختالف الضرر مدى ويختلف ضارة
ومدة وعمره النسيج أو النبات نوع
الالهوائية الظروف لهذه التعرض
Factors affecting cellular respiration
الحرارة درجة
Temperature
األكسجينOxygen
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 20059 of 24
Temperature الحرارة
سرعة من تزيد الحرارة درجة زيادة
لمدة التأثير هذا يظل و التنفس عملية
النبات يتعرض بعدها فقط معينة
غاز تركيز فيزداد ضارة عكسية لتأثيرات
النبات في الكربون اكسيد ثانيفإنه المنخفضة الحرارة درجات عند اما
تركيز يزداد ان المتوقع الناتج CO2 منإبطاء الى يؤدي ما وهو التنفس من
التفاعالت
على المؤثرة األخرى العوامــل عن بحثالخلوي التنفس
Search
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 200510 of 24
What does the plant did?
make their own food!
Green plants are the only living
organisms that are able to do this.
What is the name of the process by which plants make their own food?
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 200511 of 24
الضوئي البناءPhotosynthesis
الجديدة الكلماتKey words
األهدافobjectives
•Photosynthesis •Chlorophyll •Biomass
1 -Know the definition of photosynthesis.
2 -How to write the photosynthesis equation.
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 200512 of 24
Structure of a leaf
How are leaves designed to maximise photosynthesis?
Leaves have holes, called stomata, on their underside through which gases move in and out.
Leaves have lots of veins to carry water to the cells and carry
glucose away.
Leaves are wide and flatto create a large surface area and absorb as much
light as possible.
Leaves are thin so gases
can reach cells easily.
© Boardworks Ltd 200413 of 57
carbondioxide
water
oxygen
light energy
chlorophyll
glucose
Photosynthesis where it happens?
Green Plants use light energy from the Sun to power photosynthesis.
Photosynthesis takes place in chloroplasts.
Chloroplasts contain chlorophyll.
Chlorophyll absorbs the energy from sunlight that allows carbon dioxide and water to react.
Where in the leaf does this reaction take place?
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 200514 of 24
Photosynthesis
Is a process in which green plants use sun energy and chlorophyll to make its own food.
تقوم التي العملية الخضراء النباتاتها بهيالشمسية باستخدام الكلوروفيل الطاقة ومادة
بنفسه . غذائه النبات يصنع حتى
© Boardworks Ltd 200415 of 57
Word equation to chemical equation
© Boardworks Ltd 200416 of 57
Photosynthesis and respiration
glucose
light energy
chlorophyll
carbondioxide water oxygen
Compare the reactants, products &energy results of these two chemical reactions?
carbondioxideglucose oxygen water
Photosynthesis
Respiration (energy needed)
(energy released)
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 200517 of 24
Photosynthesis multiple-choice quiz
© Boardworks Ltd 200418 of 57
Investigating photosynthesis - apparatus
© Boardworks Ltd 200419 of 57
Investigating photosynthesis - experiment
© Boardworks Ltd 20041 of 20 © Boardworks Ltd 200520 of 24
How do plants grow?
Plant cells in the upper surface of leaves have chloroplasts which contain the green pigment called chlorophyll.
oxygen
glucosecarbon dioxide
(from the air)
water (from the soil)
light energy
It is chlorophyll that absorbs light energy from the Sun to make photosynthesis happen.
chlorophyll