Question:
Phosphoenol pyruvate (PEP) is the primary $CO_2$ acceptor in:
Phosphoenol pyruvate (PEP) is the primary $CO_2$ acceptor in:
Updated On: Aug 3, 2024
- $C_4$ plants
- $C_2$ plants
- $C_3$ and $C_4$ plants
- $C_3$ plants
Hide Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
PEP is $3 C$ compound which serves as primary $CO _{2}$ acceptor in the mesophyll cell cytoplasm of $C _{4}$ plants like maize, sugarcane, Sorghum etc.
Was this answer helpful?
0
0
Top Questions on The C4 Pathway
- Which of these is incorrect for C4-plants?
- JIPMER MBBS - 2018
- Biology
- The C4 Pathway
- R.Q of malic acid
- JIPMER MBBS - 2018
- Biology
- The C4 Pathway
- Phosphoenol pyruvate (PEP) is the primary CO2 acceptor in :
- NEET (UG) - 2017
- Biology
- The C4 Pathway
- In Kranz anatomy, the bundle sheath cells have
- AIPMT - 2011
- Biology
- The C4 Pathway
- Primary $CO_2$ acceptor of CAM plant
- UP CPMT - 2009
- Biology
- The C4 Pathway
View More Questions
Questions Asked in NEET exam
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : The potential (V) at any axial point, at 2 m distance(r) from the centre of the dipole of dipole moment vector \(\vec{P}\) of magnitude, 4 × 10-6 C m, is ± 9 × 103 V.
(Take \(\frac{1}{4\pi\epsilon_0}=9\times10^9\) SI units)
Reason R : \(V=±\frac{2P}{4\pi \epsilon_0r^2}\), where r is the distance of any axial point, situated at 2 m from the centre of the dipole.
In the light of the above statements, choose the correct answer from the options given below :- NEET (UG) - 2024
- Magnetic Field
- Given below are two statements:
Statement I: Mitochondria and chloroplasts both double membranes bound organelles.
Statement II: Inner membrane of mitochondria is relatively less permeable, as compared chloroplast. I
In the light of the above statements, choose the mis appropriate answer from the options given below- NEET (UG) - 2024
- Cell structure and organelles
- Match List I with List II:Choose the correct answer from the options given below:
List I
List II
A Mesozoic Era I Lower invertebrates B Proterozoic Era II Fish & Amphibia C Cenozoic Era III Birds & Reptiles D Paleozoic Era IV Mammals - NEET (UG) - 2024
- Origin Of Life
- A parallel plate capacitor is charged by connecting it to a battery through a resistor. If I is the current in the circuit, then in the gap between the plates :
- NEET (UG) - 2024
- Capacitors and Capacitance
- The terminal voltage of the battery, whose emf is\(10V\) and internal resistance \(1\), when connected through an external resistance of \(42\) as shown in the figure is:
- NEET (UG) - 2024
- Resistance and Resistivity
View More Questions
Concepts Used:
C4 Pathway
- Every photosynthetic plant moves according to the Calvin cycle, but in some plants, there is a primary stage to the Calvin Cycle called the C4 pathway. Plants in tropical desert regions commonly move accordingly to the C4 pathway. Here, a 4-carbon compound called oxaloacetic acid (OAA) is the first product of carbon fixation. Such plants are special and have specific adaptations as well.
- The C4 pathway commences with a molecule called phosphoenolpyruvate (PEP) which is a three-carbon molecule. This is the primary CO2 acceptor and the carboxylation, that takes place with the help of an enzyme called PEP carboxylase. They yield a 4-C molecule known as oxaloacetic acid (OAA).
- In due course, it is converted into another 4-carbon compound called malic acid. Later, they are shifted from mesophyll cells to bundle sheath cells. Here, OAA is crumbled to yield carbon dioxide and a 3-C molecule.
- The CO2 thus formed, is utilized in the Calvin cycle, whereas the 3-C molecule is shifted back to mesophyll cells for regeneration of PEP.
- Sugarcane, corn, and shrubs are some examples of plants that follow the C4 pathway. Calvin pathway is a very common pathway in both C3 plants and C4 plants, but it takes place only in the mesophyll cells of the C3 Plants and not in the C4 Plants.