Photosynthesis
Muhtasari
Almost all the food on Earth, and the oxygen you are breathing right now, can be traced back to one process happening in green leaves: photosynthesis. Plants capture the energy of sunlight and lock it into sugar, building food out of nothing more than carbon dioxide and water.
In this lesson you will learn exactly what photosynthesis is, the word equation you must know by heart, the role of chlorophyll, and, at Extended level, the balanced symbol equation. By the end you will be able to explain how plants make their own food and why that matters for every living thing.
Malengo
- Describe photosynthesis as the process by which plants synthesise carbohydrates from raw materials using energy from light
- State the word equation for photosynthesis as: carbon dioxide + water → glucose + oxygen in the presence of light and chlorophyll
- State that chlorophyll is a green pigment that is found in chloroplasts
- State that chlorophyll transfers energy from light into energy in chemicals, for the synthesis of carbohydrates
- [Supplement] State the balanced chemical equation for photosynthesis as: 6CO + 6H O → C H O + 6O 2 2 6 12 6 2
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Tathmini ya Somo
Hongera kwa kukamilisha somo la Photosynthesis. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.
Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.
Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.
- The raw materials for photosynthesis are: A. glucose and oxygen B. carbon dioxide and water C. oxygen and water D. glucose and carbon dioxide Answer: B
- In the word equation for photosynthesis, the products are: A. carbon dioxide + water B. glucose + oxygen C. starch + carbon dioxide D. oxygen + water Answer: B
- Chlorophyll is found in the: A. nucleus B. mitochondria C. chloroplasts D. ribosomes Answer: C
- The role of chlorophyll is to: A. produce carbon dioxide B. absorb light energy and transfer it to chemical energy C. store glucose D. release water Answer: B
- The balanced symbol equation for photosynthesis is: A. CO2 + H2O -> C6H12O6 + O2 B. 6CO2 + 6H2O -> C6H12O6 + 6O2 C. 6CO2 + H2O -> C6H12O6 + O2 D. CO2 + 6H2O -> 6C6H12O6 + O2 Answer: B
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Vitabu Vinavyopendekezwa
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Sehemu ya kitabu
Overview of Photosynthesis
Explain the relevance of photosynthesis to other living things
"Biology: Overview of Photosynthesis" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/biology/pages/8-1-overview-of-photosynthesis. Access for free at https://openstax.org/books/biology/pages/1-introduction
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Sehemu ya kitabu
Carbohydrates
Discuss the role of carbohydrates in cells and in the extracellular materials of animals and plants
"Biology: Carbohydrates" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/biology/pages/3-2-carbohydrates. Access for free at https://openstax.org/books/biology/pages/1-introduction
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Ungependa kufanya mazoezi ya maswali ya majaribio kuhusu Photosynthesis? Pakua programu ya Green Bridge CBT ili kupata maswali ya majaribio na tathmini kamili za mazoezi kuhusu mada hii.
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