Depletion of Inositol 1,4,5-Trisphosphate (IP₃) in the Cytosol of a Cell

question 83

Multiple Choice

Depletion of inositol 1,4,5-trisphosphate (IP₃) in the cytosol of a cell would

• A) lower cytosolic Ca²⁺ level
• B) opens voltage-gated Ca²⁺ channels
• C) activate G protein coupled receptors
• D) lower Ca²⁺ levels in the endoplasmic reticulum

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