Question

How to make a concept map ?

Q

2.(2) Make a concept map of the cell membrane. Include each of the functions of the cell membrane listed below. Make sure each function is correctly linked to the components of the cell membrane responsible for each function

1. separates intracellular fluid (ICF) from extracellular fluid (ECF)
2. provides permeability barrier
3. contains surface proteins acting as antigens - important for recognition of “self”
4. provides cell communication: receptors and signal transduction pathways for hormones and neurotransmitters
5. contains a variety of adhesion molecules allows anchoring, tissue organization
6. acts as a highly selective filter

Answer

Cell membrane = Plasma Membrane separates intracellular fluid (ICF) from extracellular fluid (ECF)

• provides permeability barrier and highly selective filter
  • permeable substance can move through the membrane or through pores or channels
    • examples: ions, glucose, steroid hormones, oxygen, water, alcohol
  • impermeable substances are not permitted to cross the membrane
    • examples: most proteins, large molecules, highly charged particles

• contains surface proteins acting as self antigens - important for immune recognition of “self”
• provides cell communication
  • receptors and signal transduction pathways for hormones and neurotransmitters
• contains a variety of adhesion molecules
  • allows anchoring, tissue organization, intracellular communication, and cell shape

How to make a concept map ?

Answer 1

A concept map is a graphical representation of a student's knowledge on that particular topic. It provides a network of key terms related to the topic and the reason for their connections to the topic. An example using plasma membrane is given in the figure:

Plasma Concept Characteristics Fluid mosiac nature Lipid bilayer Components Phospholipids Cholesterol Proteins Allows non-polar molecules like CO2 to diffuse Transporters maintain constant internal environment Amphipathic barrier Blocks water and polar molecules Self- and non-self recognition Cell-cell Mechanical Functions Provides integrity communication