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Asked by Rashad Reddick on Jun 03, 2024

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You conduct an experiment in which you inactivate Ras proteins in fibroblast cells. Which of the following is the most immediate consequence of this procedure?

A) The fibroblasts divide uncontrollably.
B) The fibroblasts synthesize excess DAG.
C) The fibroblasts synthesize excess G protein.
D) The fibroblasts no longer respond to calmodulin.
E) The fibroblasts no longer synthesize DNA in response to growth factors.

Ras Proteins

A family of proteins involved in transmitting signals within cells, playing a role in cell growth and development.

Fibroblast Cells

A type of cell found in connective tissue that produces collagen and other fibers, playing a crucial role in wound healing and tissue repair.

Growth Factors

A group of more than 50 extracellular peptides that signal certain cells to grow and divide.

  • Investigate the process of signal amplification via activated receptors.
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Rebecca WuchevichJun 04, 2024
Final Answer :
E
Explanation :
Ras proteins are involved in cell signaling pathways that control cell growth and division. Inactivating Ras proteins would disrupt these pathways, leading to an inability of fibroblasts to synthesize DNA in response to growth factors, which is necessary for cell division.

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