Warm up Which of the following organisms use the sunlight as a source of energy to stay alive? Why?
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Transcript of Warm up Which of the following organisms use the sunlight as a source of energy to stay alive? Why?
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Cell EnergySection 4.2
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Warm upWhich of the following organisms use the sunlight as a source of energy to stay alive? Why?
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Answer the following questions.
Why do you get hungry?
Why do we need energy?
How do we get energy?
Do all organisms get energy in the same way?
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Objectives
Describe photosynthesis and cellular respiration.
Compare cellular respiration and fermentation
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Label the following cell
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Why chloroplasts are important?
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What is photosynthesis
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Photosynthesis
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Getting energy from food
Animals get energy they need in two possible ways:
1- cellular respiration
2- fermentation
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Cellular respiration
Needs oxygen
Use glucose and release CO2 and H2O
Energy produced is used in order to:
1- maintain body temperature
2- form ATP
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Where do you think cellular respiration takes place?cIn prokaryotic cells cellular respiration takes place in the cell
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In eukaryotic cells…Cellular respiration takes place in mitochondria
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Cellular respiration chemical reaction
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Connection between
photosynthesis and cellular
respiration
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Look at the following and tell me what do you notice?
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Fermentation
When muscle cells can’t get the oxygen needed for cellular respiration, they use the process of fermentation to get energy
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Two types of fermentation 1- fermentation in muscles to produce lactic acid. Contribution of lactic acid in the muscle causes burning feeling and muscle fatigue.
2- Yeast forms carbon dioxide during fermentation. The bubbles of CO2 gas cause the dough to rise and leave small holes in bread after it is baked
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Pop quiz1- plants use carbon dioxide (____), and water (______) in a process called (__________) so they produce their own food, mainly in the form of (___________).
2- The product of photosynthesis are (_________) and (_________) gas.
3- in cellular respiration, organisms use (________) and (______) gas in order to produce (________) which part of it is used to main (______ _______) and the other part to form energy in the form of (______)
4- cellular respiration takes place in the (____________) of prokaryotes and in the (________) of Eukaryotes.
5- Burning feeling in muscles is due to the production of (_______) which is produced via process known as (____)