Cell Organelles and Photosynthesis

  • Grade 6th
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| Questions: 8 | Updated: Jul 1, 2026
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1. What is the nickname given to the mitochondria?

Explanation

Mitochondria are often referred to as the "powerhouse" of the cell because they are responsible for producing adenosine triphosphate (ATP), the main energy currency of the cell. This energy production occurs through cellular respiration, where nutrients are converted into usable energy. The efficient generation of ATP is crucial for various cellular functions, making mitochondria essential for maintaining the energy balance in living organisms. Thus, their role in energy production justifies the nickname "powerhouse."

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About This Quiz
Cell Organelles and Photosynthesis - Quiz

This assessment focuses on cell organelles and the process of photosynthesis. It evaluates your understanding of mitochondria and chloroplasts, their functions, and the energy conversion processes they facilitate. By engaging with this material, learners can deepen their knowledge of cellular energy dynamics and the importance of photosynthesis in sustaining life.

2. What is the main energy currency produced by the mitochondria in a cell?

Explanation

Mitochondria are known as the powerhouse of the cell, where they generate adenosine triphosphate (ATP) through cellular respiration. ATP serves as the primary energy currency, providing the energy required for various cellular processes, such as muscle contraction, protein synthesis, and cell division. It is produced during the breakdown of nutrients, such as glucose, in the presence of oxygen. The high-energy phosphate bonds in ATP release energy when broken, making it essential for sustaining life and enabling cellular functions.

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3. What do chloroplasts convert energy from sunlight into?

Explanation

Chloroplasts are specialized organelles found in plant cells that play a crucial role in photosynthesis. During this process, they capture energy from sunlight and use it to convert carbon dioxide and water into glucose, a simple sugar that serves as a basic carbohydrate. This conversion is essential for providing energy and building blocks for plant growth and metabolism. Thus, chloroplasts transform light energy into chemical energy stored in carbohydrates, which can later be utilized by the plant and other organisms in the food chain.

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4. Chloroplasts are a source of energy for ____.

Explanation

Chloroplasts are essential organelles found in plant cells and some algae, responsible for photosynthesis. They convert sunlight into chemical energy in the form of glucose, which serves as food for the plant. Since plants form the base of the food chain, the energy produced by chloroplasts indirectly supports all life forms, including herbivores and, subsequently, carnivores. Thus, chloroplasts are fundamental to the energy flow in ecosystems, highlighting their role as a source of energy for all life on Earth.

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5. Photosynthesis is a process where green plants containing chlorophyll trap light and in the presence of water and carbon dioxide produce ____.

Explanation

Photosynthesis is a vital process in which green plants use chlorophyll to capture sunlight. This energy, combined with water and carbon dioxide from the environment, is transformed into glucose, a form of food that serves as energy for the plant. Additionally, oxygen is released as a byproduct, which is essential for the survival of most living organisms. Thus, the end products of photosynthesis are food (glucose) and oxygen, highlighting the importance of plants in sustaining life on Earth.

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6. Which of the following statements about mitochondria is TRUE?

Explanation

Mitochondria are known as the "powerhouses" of the cell because they are responsible for producing adenosine triphosphate (ATP), the primary energy currency of cells. Through a process called cellular respiration, mitochondria convert nutrients, particularly glucose, into ATP, which fuels various cellular activities. This function is essential for maintaining cellular processes and overall energy balance in both cells and organisms. Other options listed do not accurately describe the role of mitochondria.

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7. Chloroplasts convert energy from sunlight to form basic carbohydrates.

Explanation

Chloroplasts are specialized organelles found in plant cells that facilitate photosynthesis, a process where sunlight is harnessed to convert carbon dioxide and water into glucose, a simple carbohydrate. This conversion not only provides energy for the plant but also produces oxygen as a byproduct. The chlorophyll within chloroplasts captures light energy, enabling this transformation, which is essential for plant growth and the foundation of the food chain. Thus, chloroplasts play a crucial role in energy conversion and carbohydrate synthesis.

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8. Match each organelle with its correct function.

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What is the nickname given to the mitochondria?
What is the main energy currency produced by the mitochondria in a...
What do chloroplasts convert energy from sunlight into?
Chloroplasts are a source of energy for ____.
Photosynthesis is a process where green plants containing chlorophyll...
Which of the following statements about mitochondria is TRUE?
Chloroplasts convert energy from sunlight to form basic carbohydrates.
Match each organelle with its correct function.
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