Bohr effect is related with

Options

A. reduced carbon level in lymph
B. reduced oxygen level in haemoglobin
C. oxidised phosphorus level in blood
D. reduced carbon level in blood

Answer

### Step-by-Step Solution:

1. **Understanding the Bohr Effect**: The Bohr effect describes how the binding affinity of hemoglobin for oxygen is influenced by changes in carbon dioxide (CO2) concentration and pH levels in the blood.

2. **Key Relationships**:
- The binding affinity of hemoglobin for oxygen decreases when the concentration of CO2 increases and when the pH of the blood decreases (becomes more acidic).
- Conversely, an increase in pH (less acidic) and a decrease in CO2 concentration will increase hemoglobin's affinity for oxygen.

3. **Analyzing the Options**:
- **Option A**: Reduced carbon level in lymph - Not directly related to the Bohr effect.
- **Option B**: Reduced oxygen level in hemoglobin - This is related to the Bohr effect, as increased CO2 and decreased pH lead to hemoglobin releasing more oxygen.
- **Option C**: Oxidized phosphorus level in blood - Not relevant to the Bohr effect.
- **Option D**: Reduced carbon level in blood - While CO2 levels are involved, this option does not accurately describe the Bohr effect.

4. **Conclusion**: The Bohr effect is primarily related to the reduced oxygen level in hemoglobin due to increased CO2 concentration and decreased pH. Therefore, the correct answer is **Option B: Reduced oxygen level in hemoglobin**.