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Q/How does the Ras protein transmit a signal from outside the cell into the cyto

ID: 51001 • Letter: Q

Question

Q/How does the Ras protein transmit a signal from outside the cell into the cytoplasm?

a) Inactivated Ras proteins transduce a signal, which activates the transcription of genes that start cell division. b) Activated Ras proteins transduce a signal, which activates the transcription of genes that start cell division. c) Activated Ras proteins transduce a signal, which inactivates the transcription of genes that supress cell division. d) Inactivated Ras proteins transduce a signal, which inactivates the transcription of genes that supress cell division.

Explanation / Answer

b) Activated Ras proteins transduce a signal, which activates the transcription of genes that start cell division

Cell growth promoting signal is linked to the Ras type protein,Ras type protein is a monomeric guanine nucleotide binding proteins, having the GTPase activity, it is inactive condition when GDP is bound and active when bound to GTP