IMMUNOGLOBULINS
CLASSICAL ALTERNATE AND LECTIN PATHWAYS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
What is the primary enzyme that fixes the CO2 from the environment in CAM Pathway?
|
|
PEP
|
|
|
RuBisCO
|
|
|
Either A or B
|
|
|
None of the above
|
Explanation:
Detailed explanation-1: -In CAM photosynthesis, stomatal behaviour reverses; atmospheric CO2 is fixed at night and stomata are closed during the day. The initial CO2 fixation is performed by the enzyme phosphoenolpyruvate (PEP) carboxylase. CO2 is fixed into 4-carbon compounds, primarily malate, and stored in vacuoles as an acid.
Detailed explanation-2: -PEP carboxylase is essential for carbon fixation in C4 and CAM plants. It is present in the mesophyll cells. It catalyses the initial carbon fixation where PEP acts as an acceptor for CO2, and produces OAA.
Detailed explanation-3: -The primary CO2 acceptor in C4 plants is a 3-carbon molecule phosphoenol pyruvate (PEP) . The enzyme responsible for this fixation is PEP carboxylase .
There is 1 question to complete.