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BIOLOGY A SEMESTER EXAM: UNIT 9, LESSON 2: HOW DO PLANTS BIOLOGY A SEMESTER EXAM: UNIT 9, LESSON 2: 1. PLANTS AND ANIMALS BOTH TAKE IN CARBON DIOXIDE AND RELEASE OXYGEN DURING CELLULAR RESPIRATION. 2. PLANTS USE OXYGEN FOR PHOTOSYNTHESIS, WHICH ANIMALS THEN USE FOR CELLULAR RESPIRATION. 3. ANIMALS PRODUCE CARBON DIOXIDE AND PLANTS PRODUCE OXYGEN AS AN OUTPUT OF CELLULAR RESPIRATION. 4. ANIMALS AND PLANTS BOTH TAKE IN OXYGEN AND RELEASE CARBON DIOXIDE DURING CELLULAR RESPIRATION. AND ANIMALS REARRANGE ATOMS IN CHEMICAL REACTIONS TO SUPPORT THEIR FUNCTIONS? 1. PLANTS AND ANIMALS BOTH TAKE IN CARBON DIOXIDE AND RELEASE OXYGEN

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It looks like you're summarizing some key concepts related to the processes of cellular respiration and photosynthesis in plants and animals. Let’s clarify and elaborate on each point you mentioned:

  1. Plants and Animals and Their Gas Exchange:

    • Plants take in carbon dioxide (CO₂) and release oxygen (O₂) during photosynthesis, not cellular respiration. During cellular respiration, both plants and animals take in oxygen and release carbon dioxide. This reflects the complementary nature of these processes.

  2. Photosynthesis and Cellular Respiration:

    • Plants use sunlight, carbon dioxide, and water to perform photosynthesis, producing glucose and oxygen: \[ 6CO_2 + 6H_2O + light , energy \rightarrow C_6H_{12}O_6 + 6O_2 \]
    • Animals, on the other hand, consume oxygen and glucose in cellular respiration to produce energy (ATP), carbon dioxide, and water: \[ C_6H_{12}O_6 + 6O_2 \rightarrow 6CO_2 + 6H_2O + ATP \]

  3. Output of Cellular Respiration:

    • The outputs of cellular respiration in animals are carbon dioxide and energy. In turn, plants use the oxygen produced as a byproduct of photosynthesis for their own cellular respiration.

  4. Complementary Processes:

    • The processes of photosynthesis and cellular respiration are interconnected. The oxygen released by plants during photosynthesis is used by animals for respiration, while the carbon dioxide produced by animals during respiration is utilized by plants in photosynthesis.

  5. Rearrangement of Atoms in Chemical Reactions:

    • In both photosynthesis and cellular respiration, atoms are rearranged in chemical reactions to convert reactants into products. In photosynthesis, carbon dioxide and water are transformed into glucose and oxygen, while in cellular respiration, glucose and oxygen are transformed into carbon dioxide, water, and energy. This atom rearrangement supports the energy needs of both plants and animals.

By understanding these processes, you can appreciate how plants and animals interact within their ecosystems and how they are dependent on one another for the exchange of gases critical to life. If you have further questions or need clarification on specific concepts, feel free to ask!