Exploring Photosynthesis: Light Cycles and Glucose Production

The video explains photosynthesis, a process where plants use light to produce glucose and oxygen. It covers the photosynthesis formula, the role of pigments like chlorophyll, and the two main reactions: light dependent and light independent. The light dependent reaction occurs in thylakoids, producing ATP and NADPH, while the light independent reaction, or Calvin Cycle, occurs in the stroma, converting CO2 into glucose. Photosynthesis is crucial for oxygen production and energy supply in ecosystems.

Which organisms are capable of performing photosynthesis?

• Some protists, bacteria, and plants

• Only amoebas

• All animals

• Only plants

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What is the primary product of photosynthesis that is essential for plant survival?

• Carbon dioxide

• Oxygen

• Water

• Glucose

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What is glucose used for in plants?

• To absorb light

• To create water

• To produce oxygen

• To make ATP energy

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What pigment is primarily responsible for capturing light in plants?

• Anthocyanin

• Chlorophyll

• Xanthophyll

• Carotene

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Why do many plants appear green?

• They convert green light into oxygen

• They only use green light for photosynthesis

• They reflect green light

• They absorb green light

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Where do the light-dependent reactions of photosynthesis take place?

• In the thylakoids

• In the ribosomes

• In the mitochondria

• In the stroma

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What are thylakoids?

• Energy storage molecules

• Light capturing molecules

• Compartments containing pigments

• Enzymes for photosynthesis

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What is the main purpose of the light-independent reactions in photosynthesis?

• To produce oxygen

• To convert carbon dioxide into glucose

• To capture light energy

• To split water molecules

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What is the role of ATP in the light-independent reactions?

• It reflects green light

• It supplies energy

• It splits water molecules

• It captures light energy

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What happens to carbon dioxide in the light-independent reactions?

• It is expelled as a waste product

• It is used to make glucose

• It is converted into oxygen

• It captures light energy

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