Question
Cellular respiration is an exothermic reaction and photosynthesis is an endothermic reaction. How does the required activation energy compare for these two reactions?(1 point)
Responses
a b c or d solve it and tell me why
Cellular respiration needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
Cellular respiration needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
Photosynthesis needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
Photosynthesis needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
Cellular respiration needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
Cellular respiration needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
Photosynthesis needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
Photosynthesis needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
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Responses
a b c or d solve it and tell me why
Cellular respiration needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
Cellular respiration needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
Photosynthesis needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
Photosynthesis needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
Cellular respiration needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
Cellular respiration needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
Photosynthesis needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
Photosynthesis needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.
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Answers
Answered by
GPT-4o mini
To answer the question, let's first clarify the nature of cellular respiration and photosynthesis in terms of energy and activation energy:
1. **Cellular Respiration**:
- **Exothermic Reaction**: This means that it releases energy (in the form of ATP) as it converts glucose and oxygen into carbon dioxide and water.
- **Products at Lower Energy State**: Because energy is released, the products of cellular respiration (CO2 and H2O) are at a lower energy state compared to the reactants (glucose and O2).
- **Activation Energy**: Since it is an exothermic reaction, the activation energy required is relatively lower because the reactants have a higher energy state compared to the products.
2. **Photosynthesis**:
- **Endothermic Reaction**: This process requires energy, specifically in the form of sunlight, to convert carbon dioxide and water into glucose and oxygen.
- **Products at Higher Energy State**: In photosynthesis, the products (glucose and O2) are at a higher energy state than the reactants (CO2 and H2O) because energy is absorbed.
- **Activation Energy**: Since it is an endothermic reaction, photosynthesis typically requires a higher amount of activation energy initially to proceed.
Given this context, we can analyze the responses:
1. **Cellular respiration needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.**
- This statement is accurate.
2. **Photosynthesis needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.**
- This statement is incorrect. Photosynthesis requires energy to proceed.
3. **Cellular respiration needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.**
- This statement is incorrect. Cellular respiration requires lower activation energy.
4. **Photosynthesis needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.**
- This statement is also incorrect. Photosynthesis requires higher energy but does not involve products being at a lower energy state.
Thus, the correct response is:
**Cellular respiration needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.**
1. **Cellular Respiration**:
- **Exothermic Reaction**: This means that it releases energy (in the form of ATP) as it converts glucose and oxygen into carbon dioxide and water.
- **Products at Lower Energy State**: Because energy is released, the products of cellular respiration (CO2 and H2O) are at a lower energy state compared to the reactants (glucose and O2).
- **Activation Energy**: Since it is an exothermic reaction, the activation energy required is relatively lower because the reactants have a higher energy state compared to the products.
2. **Photosynthesis**:
- **Endothermic Reaction**: This process requires energy, specifically in the form of sunlight, to convert carbon dioxide and water into glucose and oxygen.
- **Products at Higher Energy State**: In photosynthesis, the products (glucose and O2) are at a higher energy state than the reactants (CO2 and H2O) because energy is absorbed.
- **Activation Energy**: Since it is an endothermic reaction, photosynthesis typically requires a higher amount of activation energy initially to proceed.
Given this context, we can analyze the responses:
1. **Cellular respiration needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.**
- This statement is accurate.
2. **Photosynthesis needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.**
- This statement is incorrect. Photosynthesis requires energy to proceed.
3. **Cellular respiration needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.**
- This statement is incorrect. Cellular respiration requires lower activation energy.
4. **Photosynthesis needs a higher amount of energy to activate the reaction because the products are at a lower energy state than the reactants.**
- This statement is also incorrect. Photosynthesis requires higher energy but does not involve products being at a lower energy state.
Thus, the correct response is:
**Cellular respiration needs a smaller amount of energy to activate the reaction because the products are at a lower energy state than the reactants.**