What structure regulates the entry and exit of substances in a cell? (2021)

Practice Questions

Q1
What structure regulates the entry and exit of substances in a cell? (2021)
  1. Cell Wall
  2. Nucleus
  3. Plasma Membrane
  4. Cytoplasm

Questions & Step-by-Step Solutions

What structure regulates the entry and exit of substances in a cell? (2021)
  • Step 1: Understand that cells are the basic units of life.
  • Step 2: Know that cells need to control what goes in and out to stay healthy.
  • Step 3: Learn that the structure responsible for this control is called the plasma membrane.
  • Step 4: Realize that the plasma membrane acts like a gatekeeper, allowing some substances to enter and exit while blocking others.
  • Step 5: Remember that this regulation helps maintain a stable internal environment, known as homeostasis.
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