The enzyme used in the Calvin cycle to fix carbon dioxide (CO₂) is known as ribulose bisphosphate carboxylase/oxygenase, commonly referred to as **RuBisCO**. This enzyme plays a crucial role in the photosynthetic process, aiding in the conversion of atmospheric CO₂ into organic compounds during the light-independent reactions of photosynthesis.

### Explanation:
1. **Function**: RuBisCO catalyzes the first major step of carbon fixation, where CO₂ is added to ribulose bisphosphate (RuBP) to produce 3-phosphoglycerate (3-PGA).

2. **Importance**: This step is essential because it establishes a pathway for carbon to enter the biosphere, ultimately leading to the production of glucose and other carbohydrates that are vital for plant growth and energy.

3. **Inefficiencies**: RuBisCO is one of the most abundant enzymes on Earth but is inefficient as it can also catalyze the reaction of oxygen with RuBP, leading to photorespiration, which can decrease the efficiency of photosynthesis.

Given these details, the correct choice is **RuBisco**.

Question

The enzyme used in the Calvin cycle to fix carbon dioxide (CO₂) is known as ribulose bisphosphate carboxylase/oxygenase, commonly referred to as **RuBisCO**. This enzyme plays a crucial role in the photosynthetic process, aiding in the conversion of atmospheric CO₂ into organic compounds during the light-independent reactions of photosynthesis.

### Explanation:
1. **Function**: RuBisCO catalyzes the first major step of carbon fixation, where CO₂ is added to ribulose bisphosphate (RuBP) to produce 3-phosphoglycerate (3-PGA).
   
2. **Importance**: This step is essential because it establishes a pathway for carbon to enter the biosphere, ultimately leading to the production of glucose and other carbohydrates that are vital for plant growth and energy.

3. **Inefficiencies**: RuBisCO is one of the most abundant enzymes on Earth but is inefficient as it can also catalyze the reaction of oxygen with RuBP, leading to photorespiration, which can decrease the efficiency of photosynthesis.

Given these details, the correct choice is **RuBisco**.

Knowee AI · Accepted Answer

The enzyme used in the Calvin cycle to fix carbon dioxide (CO₂) is known as ribulose bisphosphate carboxylase/oxygenase, commonly referred to as **RuBisCO**. This enzyme plays a crucial role in the photosynthetic process, aiding in the conversion of atmospheric CO₂ into organic compounds during the light-independent reactions of photosynthesis.

### Explanation:
1. **Function**: RuBisCO catalyzes the first major step of carbon fixation, where CO₂ is added to ribulose bisphosphate (RuBP) to produce 3-phosphoglycerate (3-PGA).
   
2. **Importance**: This step is essential because it establishes a pathway for carbon to enter the biosphere, ultimately leading to the production of glucose and other carbohydrates that are vital for plant growth and energy.

3. **Inefficiencies**: RuBisCO is one of the most abundant enzymes on Earth but is inefficient as it can also catalyze the reaction of oxygen with RuBP, leading to photorespiration, which can decrease the efficiency of photosynthesis.

Given these details, the correct choice is **RuBisco**.

The enzyme used in the Calvin cycle to fix CO₂ is called:Group of answer choicescarotenoidRuBPrubiscoNADPHchlorophyllNext

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The enzyme used in the Calvin cycle to fix CO₂ is called:

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