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TLS Online TPP Program
#Question id: 12525
#Unit 6. System Physiology – Plant
The role of ABA signaling during water stress in the guard cells in presence and absence of ABA;
a) Anion effl¬ux leads to depolarization of the plasma membrane, which drives K+ effl¬ux. The eff¬lux of ions (A– and K+) reduces the turgor pressure of guard cells, resulting in stomatal closure.
b) Both OST1 and CPKs phosphorylate and thereby activate plasma membrane anion channels, leading to ef¬flux of anions (A–). But this process can be inhibited directly by PP2Cs
c) Inhibition of PP2C activity releases the positive regulator kinase OST1 from inhibition, resulting in both phosphorylation and activation of NADPH oxidases (RBOHs)
d) RBOHs catalyze the formation of apoplastic reactive oxygen species (ROS), which triggers opening of plasma membrane Ca2+-permeable ion channels
e) The resulting elevation of cytosolic Ca2+ leads to activation of calcium-dependent protein kinases (CPKs), which can also activates the RBOH proteins further promoting Ca2+ infl¬ux into the cytosol.
Which statements belongs to the presence and absence of ABA during signalling;
I. In presence of ABA
II. In absence of ABA
Which of the following combination from the given above statements is correct?
TLS Online TPP Program
#Question id: 2579
#Unit 2. Cellular Organization
Match the following proteins (Column I) with their functions (Column II) during cell organization and movement.
Column I |
Column II |
A. Profilin |
i. Actin nucleating protein |
B. Formin |
ii. ADP-actin binding protein |
C. WASp |
iii. Capping protein |
D. Gelsolin |
iv. Nucleation promoting factor |
Which of the following is correct?
TLS Online TPP Program
#Question id: 18964
#Unit 13. Methods in Biology
Size of agrobacterium can be reduced by binary vector formation; these binary vectors can be formed by phenomenon of
TLS Online TPP Program
#Question id: 15967
#Unit 12. Applied Biology
Which culture technique is responsible for the immature embryo rescue?
TLS Online TPP Program
#Question id: 28093
#Unit 6. System Physiology – Plant
Different component are oriented in different manner
(a) Photosystem II is located predominantly in the stacked regions of the thylakoid membrane
(b) Photosystem I is located predominantly in the stacked regions of the thylakoid membrane
(c) photosystem II and ATP synthase are found in the unstacked regions protruding into the stroma
(d) photosystem I and ATP synthase are found in the unstacked regions protruding into the stroma
Which of the following is correct