Ch 4: The structure of a chloroplast
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Questions and Answers

What is the function of thylakoids in a chloroplast?

  • Capture light energy during photosynthesis (correct)
  • Site for light-independent reactions
  • Facilitate gaseous exchange within the chloroplast
  • Store nutrients for the plant cell

    • Which pigment is found in thylakoids and captures light energy?

  • Carotenoid
  • Phytochrome
  • Chlorophyll (correct)
  • Xanthophyll

    • What is a granum in the context of a chloroplast?

  • A type of pigment found in chloroplasts
  • A site for water absorption
  • A region for carbohydrate synthesis
  • A stack of thylakoid membranes (correct)

    • Which structure resembles stacks of coins within a chloroplast?

    <p>Grana</p> Signup and view all the answers

    Which process occurs within the thylakoids of a chloroplast?

    <p>Photosynthesis</p> Signup and view all the answers

    What is the primary function of grana in a chloroplast?

    <p>Utilization of light energy</p> Signup and view all the answers

    Which of the following is NOT a component of a chloroplast?

    <p>Cristae</p> Signup and view all the answers

    What role does chlorophyll play in a chloroplast during photosynthesis?

    <p>Captures light energy</p> Signup and view all the answers

    Which organelle is known as the 'powerhouse of the plant cell'?

    <p>Mitochondrion</p> Signup and view all the answers

    Where does the conversion of light energy into chemical energy occur in a chloroplast?

    <p>Thylakoid</p> Signup and view all the answers

    What is the function of lamellae within the chloroplast?

    <p>Facilitate exchange of materials between adjacent thylakoids</p> Signup and view all the answers

    Where are glucose molecules produced during photosynthesis stored in plants?

    <p>Starch granules</p> Signup and view all the answers

    What is the role of stroma in photosynthesis?

    <p>Catalyze the fixation of carbon dioxide</p> Signup and view all the answers

    Which structure protects the chloroplast from damage and regulates the passage of substances?

    <p>Double membrane</p> Signup and view all the answers

    What is the function of chloroplast DNA?

    <p>Encode essential genes for photosynthesis</p> Signup and view all the answers

    Why are grana structures important in chloroplasts?

    <p>Maximize surface area for light absorption</p> Signup and view all the answers

    Which part of the chloroplast is responsible for synthesizing carbohydrates like glucose?

    <p>Stroma</p> Signup and view all the answers

    What does the interconnected network of lamellae ensure within the chloroplast?

    <p>Coordination of photosynthetic processes</p> Signup and view all the answers

    Which part of the chloroplast structure can be described as a fluid-filled matrix?

    <p>Stroma</p> Signup and view all the answers

    What role does the double membrane play in the chloroplast?

    <p>Protects the chloroplast and regulates substance passage</p> Signup and view all the answers

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

    <p>Thylakoid</p> Signup and view all the answers

    What is the primary function of grana within a chloroplast?

    <p>Facilitate the capture and utilization of light energy</p> Signup and view all the answers

    Which structure in a chloroplast resembles stacks of coins?

    <p>Granum</p> Signup and view all the answers

    What is the role of lamellae within a chloroplast?

    <p>Interconnect grana</p> Signup and view all the answers

    Where is chlorophyll found within a chloroplast?

    <p>Thylakoid</p> Signup and view all the answers

    What key products are generated ultimately from the light energy captured within a chloroplast?

    <p>ATP and NADPH</p> Signup and view all the answers

    Which organelle is responsible for conducting photosynthesis within plant cells?

    <p>Chloroplast</p> Signup and view all the answers

    Which site within a chloroplast is crucial for driving the synthesis of carbohydrates?

    <p>Stroma</p> Signup and view all the answers

    What is the function of thylakoids in a chloroplast?

    <p>Facilitate light-dependent reactions of photosynthesis</p> Signup and view all the answers

    Which component of a chloroplast plays a key role in converting light energy into chemical energy?

    <p>Thylakoid</p> Signup and view all the answers

    What is the function of lamellae within the chloroplast?

    <p>Provide structural support and facilitate material exchange</p> Signup and view all the answers

    Where are glucose molecules produced during photosynthesis stored in plants?

    <p>Starch granules</p> Signup and view all the answers

    Which structure protects the chloroplast from damage and regulates the passage of substances?

    <p>Double membrane</p> Signup and view all the answers

    What is the primary function of grana in a chloroplast?

    <p>Facilitate light absorption for photosynthesis</p> Signup and view all the answers

    Which structure resembles stacks of coins within a chloroplast?

    <p>Thylakoids</p> Signup and view all the answers

    What role does the double membrane play in the chloroplast?

    <p>Protect and regulate substance passage</p> Signup and view all the answers

    Which of the following is NOT a function of stroma within the chloroplast?

    <p>Regulation of light absorption</p> Signup and view all the answers

    By what process do chloroplast DNA-encoded genes contribute to photosynthesis?

    <p>Synthesize the structure-essential proteins</p> Signup and view all the answers

    What does the interconnected network of lamellae ensure within the chloroplast?

    <p>Coordination of photosynthetic processes</p> Signup and view all the answers

    Which part of the chloroplast is responsible for synthesizing carbohydrates like glucose?

    <p>Stroma</p> Signup and view all the answers

    Which organelle is often referred to as the 'powerhouse of the plant cell'?

    <p>Mitochondrion</p> Signup and view all the answers

    What is the primary function of lamellae within the chloroplast?

    <p>Interconnecting thylakoids</p> Signup and view all the answers

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

    <p>Thylakoids</p> Signup and view all the answers

    Which structure within the chloroplast resembles stacks of coins?

    <p>Thylakoid</p> Signup and view all the answers

    What is a major function of granum (grana) in a chloroplast?

    <p>Converting light into chemical energy</p> Signup and view all the answers

    Which structure is crucial for driving the synthesis of carbohydrates within the chloroplast?

    <p>Thylakoid</p> Signup and view all the answers

    What is the primary role of chlorophyll in photosynthesis?

    <p>Harvesting light energy</p> Signup and view all the answers

    What does the interconnected network of lamellae ensure within the chloroplast?

    <p>Efficient transfer of materials</p> Signup and view all the answers

    Where is chlorophyll predominantly found within the chloroplast?

    <p>Thylakoid</p> Signup and view all the answers

    What key products are ultimately generated from the light energy captured in a chloroplast?

    <p>NADPH and ATP</p> Signup and view all the answers

    What is the role of lamellae in a chloroplast?

    <p>Provide structural support</p> Signup and view all the answers

    Which structure in a chloroplast functions primarily in the light-independent reactions of photosynthesis?

    <p>Stroma</p> Signup and view all the answers

    What is the function of starch granules in a chloroplast?

    <p>Store glucose</p> Signup and view all the answers

    Where is the synthesis of carbohydrates like glucose primarily carried out within a chloroplast?

    <p>Stroma</p> Signup and view all the answers

    Which component of a chloroplast generates proteins required for chloroplast structure maintenance and photosynthetic reactions?

    <p>Chloroplast DNA</p> Signup and view all the answers

    What key role does the double membrane of a chloroplast play?

    <p>Regulating material passage</p> Signup and view all the answers

    Which structure directly encodes genes for essential proteins involved in photosynthesis processes?

    <p>Chloroplast DNA</p> Signup and view all the answers

    What is the primary function of grana in a chloroplast?

    <p>Absorb light</p> Signup and view all the answers

    Where are glucose molecules produced during photosynthesis stored within plants?

    <p>Starch granules</p> Signup and view all the answers

    Which part of a chloroplast plays a significant role in the coordination of photosynthetic processes?

    <p>Lamellae</p> Signup and view all the answers

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