Amoeba Sisters Photosynthesis Flashcards
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Questions and Answers

What does photosynthesis use in order to make sugar?

Light, carbon dioxide, and water.

What types of organisms are photosynthetic?

Some protists, some bacteria, and all plants.

How do humans benefit from photosynthesis?

The process produces oxygen for humans to breathe.

What do plants and animals use glucose for?

<p>Plants and animals use glucose to make ATP energy and carry out cellular activities.</p> Signup and view all the answers

What is cellular respiration?

<p>Cellular respiration is the process by which plants and animals use glucose to make ATP energy.</p> Signup and view all the answers

How is cellular respiration related to photosynthesis?

<p>CR uses the glucose and oxygen from photosynthesis to make ATP, carbon dioxide, and water.</p> Signup and view all the answers

What is chlorophyll?

<p>Chlorophyll is a light-absorbing molecule called a pigment.</p> Signup and view all the answers

Where is chlorophyll found in plants?

<p>Inside the thylakoids in the chloroplasts.</p> Signup and view all the answers

What are the two major reactions that occur in chloroplasts?

<p>The light-dependent reaction and the light-independent reactions.</p> Signup and view all the answers

Where does the light-dependent reaction take place?

<p>It occurs in stacked thylakoids called granum in the chloroplasts.</p> Signup and view all the answers

What happens at the molecular level during the light-independent reaction?

<p>Carbon dioxide and hydrogen are reshuffled to form glucose.</p> Signup and view all the answers

Where does the light-independent reaction occur in the chloroplast?

<p>In the liquid stroma surrounding the thylakoids.</p> Signup and view all the answers

Where does the ATP and NADPH used to make glucose in the light-independent reaction come from?

<p>Both come from the light-dependent reaction.</p> Signup and view all the answers

Give some examples of consumers that benefit from the energy supplied by plants.

<p>Any organism that eats plants or eats other organisms that eat plants.</p> Signup and view all the answers

What is photosynthesis?

<p>The conversion of light energy from the sun into chemical energy.</p> Signup and view all the answers

What is glucose?

<p>A simple sugar that is an important source of energy.</p> Signup and view all the answers

Study Notes

Photosynthesis Overview

  • Photosynthesis converts light energy, carbon dioxide, and water into sugar (glucose).
  • Involves various organisms: certain protists, some bacteria, and all plants.

Importance of Photosynthesis

  • Produces oxygen essential for human respiratory needs.
  • Plants and animals utilize glucose for ATP energy production, necessary for cellular functions.

Cellular Respiration Connection

  • Cellular respiration (CR) is how glucose is transformed into ATP energy by organisms.
  • CR utilizes glucose and oxygen from photosynthesis, producing ATP, carbon dioxide, and water.
  • Photosynthesis relies on products from CR, emphasizing the interdependence of both processes.

Chlorophyll and Its Role

  • Chlorophyll is a pigment that absorbs red and blue light, reflecting green, which gives plants their color.
  • Found within thylakoids in chloroplasts of plant cells.

Reactions in Chloroplasts

  • Two primary reactions occur:
    • Light-dependent reactions: convert light energy into chemical energy.
    • Light-independent reactions (Calvin Cycle or dark reactions): synthesize glucose from carbon dioxide and hydrogen.

Light-Dependent Reactions

  • Occur in thylakoids (stacked structures called granum).
  • Water is split into hydrogen and oxygen using light energy.
  • Reactants: water; Products: oxygen and protons.

Light-Independent Reactions

  • Take place in the stroma surrounding thylakoids.
  • Use carbon dioxide and hydrogen to produce glucose through molecular rearrangement.
  • Called "dark" reactions as they don’t directly require light but rely on energy carriers from light-dependent reactions.

Role of ATP and NADPH

  • ATP supplies necessary energy for the light-independent reaction.
  • NADPH provides reducing power, both generated during light-dependent reactions.

Consumers Benefiting from Plants

  • Includes any organism that consumes plants or other organisms that directly eat plants.
  • Almost all living organisms are indirectly reliant on plant energy through various food chains.

Summary of Key Terms

  • Photosynthesis: The process of converting sunlight into chemical energy.
  • Glucose: A simple sugar vital as a key energy source for living organisms.

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Description

Test your knowledge on the process of photosynthesis with these flashcards. Learn about the essential components, the organisms involved, and the benefits to humans. Ideal for students seeking to understand this vital biological process.

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