46. Of the following signaling processes which one is NOT involved in cellular movement or cytoskeletal changes? Of the signaling processes involved in cellular movement […]
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Cell-Cell Communication
Role of Rho GTPase in Modulating Actin Cytoskeleton in HeLa Cells: Mechanisms and Significance
45. Intracellular transport and cytoskeletal organization of a cell is regulated by nucleotide exchange of different small molecular weight GTPases of Ras super family. Overexpression of which of the following […]
Cell-Cell Communication
Non-Canonical Wnt Signaling Pathway: Role of RhoA and PLC in Cell Polarity and Calcium Signaling
Which of the following is most likely to be activated in the non-canonical Wnt pathway? (1) Disheveled and GSK-3. (2) RhoA and PLC. (3) GSK-3 and RhoA (4) Disheveled and […]
Cell-Cell Communication
Role of Groucho Displacement in β-Catenin Mediated Wnt Signaling Activation
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 […]
Cell-Cell Communication
Hedgehog Proteins: Key Morphogens in Development and Signaling Pathways
Which one of the following is a group of signalling molecules that act as morphogens during development of an organism and its effects are mediated through the receptor Patched and […]
Cell-Cell Communication
The Crucial Role of Proteases in Collagen Remodeling and Tissue Healing
Collagens are the most abundant component of the extracellular matrix. In order to maintain normal physiological processes like wound healing, bone development, etc., which one of the following type of […]
Cell-Cell Communication
Understanding Collagen Structure: Clarifying the Composition of Its Triple Helix
39. Collagen is the most prevalent extracellular matrix protein. Which of the following is NOT true for collagen? (1) Collagen is composed of triple helix consisting of two α polypeptide […]
Cell-Cell Communication
Impact of Connexin Inhibition on Intercellular Protein Movement via Gap Junctions
38. A researcher was studying a protein ‘X’ which has been observed to move across cells when an extracellular electrical stimulus is provided. An artificial peptide ‘P’ was prepared which […]
Cell-Cell Communication
Key Differences Between Cadherins and Integrins in Cell Adhesion
Physical attachment of cells in a tissue or organ is mediated by different types of junctions, one of which is anchoring junctions. This includes both cell-cell adhesions and cell-extracellular matrix […]
Cell-Cell Communication
Understanding Cell Junctions: Correct and Incorrect Characteristics of Tight Junctions, Desmosomes, Gap Junctions, and Hemidesmosomes
Junctions which tether cytoskeletal filaments inside the cell are known as (1) anchoring junctions (2) occluding junctions (3) channel forming junction (4) signal – relay junction correct answer is: (1) […]
