Photosynthesis Light Reactions Warm Up
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Questions and Answers

Why do plants look green?

  • Because carotenoids absorb other colors and reflect green light
  • Because chlorophyll absorbs other colors and reflects green light (correct)
  • Because carotenoids absorb green light and reflect other colors
  • Because chlorophyll absorbs green light and reflects other colors

What is the role of NADPH and ATP in the light reaction?

  • They are used to convert carbon dioxide to glucose
  • They provide energy for the synthesis of glucose (correct)
  • They transport electrons in the chloroplast
  • They are involved in capturing sunlight

What type of radiation is most commonly used by organisms?

  • Infrared radiation
  • Lower energy radiation
  • Higher energy radiation
  • Visible range radiation (correct)

What is the function of carotenoids in plant cells?

<p>To reflect yellow and orange light (B)</p> Signup and view all the answers

What is the function of the accessory pigments in the photosystems?

<p>Act as antennas to absorb sunlight (A)</p> Signup and view all the answers

What does the thylakoid membrane do?

<p>It produces ATP and NADPH (C)</p> Signup and view all the answers

Where does the light-dependent reaction occur?

<p>Inside the thylakoid and on its membrane (B)</p> Signup and view all the answers

What is the primary product of the light-independent (Calvin Cycle) reactions?

<p>Glucose (B)</p> Signup and view all the answers

What is the main function of the cyclic electron transport?

<p>Produce ATP through chemiosmosis (A)</p> Signup and view all the answers

How is ATP produced in the light-dependent reactions?

<p>Through chemiosmosis due to a proton gradient inside the thylakoid space (D)</p> Signup and view all the answers

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