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What is the role of calcium ions in cell signaling?

Practice Questions

Q1
What is the role of calcium ions in cell signaling?
  1. They act as a primary messenger
  2. They serve as a second messenger
  3. They inhibit signaling pathways
  4. They are involved in protein synthesis

Questions & Step-by-Step Solutions

What is the role of calcium ions in cell signaling?
  • Step 1: Understand that cells need to communicate with each other to function properly.
  • Step 2: Learn that signaling pathways are like messages that tell the cell what to do.
  • Step 3: Know that calcium ions (Ca2+) are tiny charged particles that can move in and out of cells.
  • Step 4: Realize that when a signal is received by a cell, it can cause calcium ions to enter the cell.
  • Step 5: Understand that the increase in calcium ions inside the cell acts like a 'second messenger' that helps relay the signal.
  • Step 6: Recognize that this increase in calcium can trigger various responses, such as muscle contraction or hormone release.
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