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WorksheetsTopic 5 Cell signalling
Total questions: 10
Worksheet time: 3mins
In response to a signal begin received a cell may ________.
Grow and divide
Survive
Die
All of the above
Signalling from local mediator cell to targets in close proximity is an example of which kind of signalling?
Endocrine
Paracrine
Neuronal
Contact dependent
The speed of a response to an extracellular signal depends apon.....
The mechanism of signal delivery
Whether transcription is required
Whether protein function is altered
All of the above
In the signal transduction pathway the signal is passed though the cytoplasm via....
Extracellular signalling molecules
Effector proteins
Receptor proteins
Intracellular signalling molecules
GTP proteins switch between active state (GDP bound) and inactive state (GTP bound)
TRUE
FALSE
Cyclic AMP is synthesised by adenyl cyclase and degraded by ......
Phospholipase C
PKA
cyclic AMP phosphodiesterase
cyclic AMP phospholipase C
RTKs are an example of enzyme coupled receptor but what does it stand for?
Retinol transfer kinase
Receptor tyrosine kinase
Receptor threonine kinase
Receptor transferase kinase
During PI3-AKT pathway, activated AKT promotes what?
Cell survival
Cell death
Cell differentiation
Different signals originating from the plasma membrane can be integrated by cross talk between different signalling pathways inside the cell.
TRUE
FALSE
Signalling molecules fall into 2 classes based on what?
Size and charge
Size only
Charge only
Chain length
