Refer to the Table Below, Summarizing Key Features of Two

question 238

Multiple Choice

Refer to the table below, summarizing key features of two signal transduction pathways that result in the same cellular response. Based on this information, which comparison is most reasonable?

• A) Pathway 1 requires more time to complete than pathway 2.
• B) Pathway 1 requires more energy input than pathway 2.
• C) Pathway 2 is less vulnerable than pathway 1 to becoming dysfunctional as the result of mutation events.
• D) A single molecule of Z is able to open more calcium ion channels than a single molecule of X.
• E) A single protein kinase in pathway 2 is able to activate more of its substrate than the single protein kinase in pathway 1.

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