Based on the Hatch and slack pathway , which of the following compounds are found in mesophylls and bundle sheath cells, respectively ?

Options

A. PEPcase , RuBisCO
B. PEP, ATPase
C. RuBisCo, PEPcase
D. PEP, RuBisCO

Answer

To solve the question regarding the compounds found in mesophyll and bundle sheath cells based on the Hatch and Slack pathway, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Hatch and Slack Pathway**:
- The Hatch and Slack pathway is a mechanism of photosynthesis that occurs in certain plants, particularly C4 plants. It involves the fixation of carbon dioxide in two different types of cells: mesophyll cells and bundle sheath cells.

2. **Identify the Compounds in Mesophyll Cells**:
- In the mesophyll cells, the primary enzyme involved is **PEP carboxylase** (often abbreviated as PEP case). This enzyme catalyzes the initial fixation of carbon dioxide into a four-carbon compound.

3. **Identify the Compounds in Bundle Sheath Cells**:
- In the bundle sheath cells, the enzyme **RUBP carboxylase** (commonly known as Rubisco) is present. This enzyme is responsible for the Calvin cycle, where the four-carbon compound produced in the mesophyll is converted into glucose.

4. **Summarize the Findings**:
- Therefore, the compound found in mesophyll cells is **PEP carboxylase**, and the compound found in bundle sheath cells is **RUBP carboxylase**.

5. **Select the Correct Option**:
- Based on the identification of these compounds, the correct answer to the question would be the option that states PEP carboxylase is found in mesophyll cells and RUBP carboxylase is found in bundle sheath cells.