An increase in phospholipase C activity would most likely cause an increase in cellular response.
Cellular reactions to changes in the environment are the result of signaling pathway activation. This reaction can manifest in a variety of ways, such as protein production, a modification in the metabolism of the cell, cell growth, and division, or even cell death. The pathways that activate enzymes that interact with DNA transcription factors to induce gene expression will be covered in greater detail in the coming chapters. Other pathways may lead cells to store energy as glycogen or fat or produce free energy in the form of glucose. External signals known as growth factors almost always promote cell division and expansion; uncontrolled cell development results in cancer. Apoptosis, also known as programmed cell death, is a process that eliminates damaged or extra cells and is essential for development, including the morphogenesis of fingers and toes. To guarantee that the response to a signal is suitable in timing and intensity, the cell signaling cascade must be terminated. Signal termination in cells can occur by dephosphorylation of pathway intermediates or degradation of signaling molecules. Examples of conditions where signaling pathways are blocked or deficient include diabetes, heart disease, autoimmune illness, poisons, anesthetics, and birth control medications. These conditions can be harmful, preventative, or prophylactic.
The complete question is:
Examine The Image Of Molecules Involved In The Signaling Pathway: The signaling pathway shows the molecules involved in bringing about a cellular response. Based on this representation, which of the following would most likely cause an increase in cellular response?
a. an increase in phospholipase C activity
b. a lack of Ca2+ in the endoplasmic reticulum
c. closing of IP3-gated calcium channels
d. formation of PIP2 from DAG and IP3
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