In response to a Wnt signal, β-catenin enters the nucleus and binds to the LEF1/TCF proteins by displacing which one of the following proteins? (1) CBP (2) GSK3 (3) Groucho […]
Tag: CELL SIGNALING
No posts found.
Cell-Cell Communication
Why Calcium Is Essential for Cadherin Cell Adhesion Molecules
5. The essential mineral required for cell adhesion molecule, cadherin is? (1) calcium (2) magnesium (3) Iron (4) Sodium Introduction: Cell Adhesion and Cadherin Cell adhesion molecules (CAMs) are […]
CSIR NET Life Science Previous Year Questions and Solution cell biology
Sharp Thresholds in Bacterial Gene Expression: How Cooperativity Drives Response Regulator Function
A bacterial response regulator turns on gene A in its phosphorylated form. The amount of “A” shows a sharp and sleep rise at a threshold concentration of the signal sensed […]
CSIR NET Life Science Previous Year Questions and Solution cell biology
Conserved Aspartic Acid: Key Residue in Plant Two-Component Response Regulators
79. Which one of the following amino acids is characteristics of and is conserved in response regulator of plant two component systems? (1) Aspartic acid (2) Glutamic acid (3) Tyrosine […]
CSIR NET Life Science Previous Year Questions and Solution cell biology
Bacterial Two-Component Systems: Sensory Kinase and Response Regulator Explained
78. Bacterial two component system includes (1) Sensory kinase and response regulator (2) Sensory kinase and Phosphotransferase (3) Signal and receptor (4) Stimulus and response Bacterial Two-Component System: Sensor Kinase […]
CSIR NET Life Science Previous Year Questions and Solution cell biology
Bacterial Chemotaxis: Mechanism Behind Smooth Movement and Role of Che Proteins
Smooth movement of bacteria during chemotaxis is due to (1) Due to tumbling (2) Phosphorylation of Chey (3) Movement of H+ across plasma membrane (4) Phosphorylation of Che A Smooth […]
CSIR NET Life Science Previous Year Questions and Solution cell biology
Bacterial Motility Explained: How Flagellin-Based Flagella Propel Bacteria
Bacteria propels with the help of (1) Actin like MreB proteins (2) Tubulin flagella (3) Flagellin Flagella (4) Changes in cytoskeleton How Do Bacteria Propel Themselves? Understanding the Role of […]
CSIR NET Life Science Previous Year Questions and Solution cell biology
“Quorum Sensing in Bacteria: The Key to Population Control and Virulence Regulation”
It has been observed the bacteria secretes toxin at high population density to check the population size. This phenomenon is termed as (1) Quorum sensing (2) Population control (3) Allelopathy […]
CSIR NET Life Science Previous Year Questions and Solution cell biology
Quorum Sensing in Bacillus subtilis: Coordinating Sporulation Through Cell-Cell Communication
74. Which sporulation bacteria possess cell-cell communication mechanism that allows bacteria to coordinate physiological processes in response to cell density? (1) Actinomycetes (2) Bacillus subtilis (3) Cyanobacteria (4) Archeabacteria Sporulating […]
CSIR NET Life Science Previous Year Questions and Solution cell biology
Virus Receptor Usage in Competitive Infection: Dissecting Roles of Receptors X and Y in Virus A and Virus B Entry
In a laboratory experiment it was observed that both ‘Virus A’ and ‘Virus B’ could infect a mammalian host cell, when infected individually. Interestingly, if the cell were first infected […]
