#Question id: 1366
#Unit 4. Cell Communication and Cell Signaling
Mechano-transduction is the reciprocal interconversion of a mechanical force—or stimulus—and biochemical processes. These interconversions underlie a variety of biological activities, such as signaling, regulated gene expression, cell proliferation, cell migration, and interactions among cells and between cells and the ECM. Mechano-transduction in the context of cell-cell and cell-ECM interactions usually involves a cell-surface CAM or adhesion receptor that transmits mechanical force or biochemical information across the plasma membrane and one or more intracellular or extracellular mechano-sensors that respond to the mechanical stimulus by changing shape and activity. In Hypothetical model of the partial unfolding of a fibronectin type III, when that protein is subjected to mechanical force, following observations are-
A. Mechanical force generated within the cell by actin movement and transduce via multiple integrin adhesion receptors bound to the extracellular dimeric fibronectin can partially unfold the fibronectin.
B. The unfolding is thought to expose a putative, previously hidden binding site on fibronectin that has the potential to form β sheets with other fibronectin molecules, recruiting them to form fibronectin fibrils, and thus helping assemble the ECM.
According to observations which of the following protein act as mechano-sensor and mechano-transducer respectively?
#Question id: 28713
#Unit 2. Cellular Organization
COPII Vesicle transport from ER to cis Golgi network, these COPII vesicle coated with coat proteins, associated GTPase is_________
#Question id: 10821
#Unit 10. Ecological Principles
What factor does not contribute to the rapid loss of nutrients from terrestrial ecosystems?
#Question id: 27006
#Unit 10. Ecological Principles
Which of these statements about dinoflagellates is false?
#Question id: 10629
#Unit 10. Ecological Principles
Following are density dependent factors
A- Food B- space
Which of the following animal and their most important density dependent limiting factor are correct?