Bozeman Biology
Cell Membranes # 1 video
http://bit.ly/RjqhXN
1 What is the function of the cell membrane?
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2 What are the characteristics of a phospholipid?
a Structure :
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b Charge:
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3 A molecule that is both hydrophilic and hydrophobic is called:
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4 What has the structure of a phospholipid got to do with the way it
arranges itself in the membrane?
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5 Draw a picture of what this would look like?
6 What kinds of cells have cell membranes?
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7 Why is the membrane said to be fluid?
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8 What are the major things that the membrane is made up of?
a __________________________________________________
b __________________________________________________
9 What does the phospholipid do?
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10 What do the the proteins do?
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11 What are the two sides of the membrane?
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12 What’s a glycoprotein?
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13 Where do the characteristics of the membrane come from, and what are
they?
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14 Name three ways the membrane maintains fluidity?
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15 What kinds of materials can enter and leave the cell?
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16 How does water enter and leave the cell? Name the molecule that helps
with this.
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17 Why does soap dissolve the membrane easily?
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18 What is selective permeability? How does the cell achieve this?
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19 What are the major molecules in the cell membrane?
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20 Define Amphipathic. How does this affect transport across the membrane?
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21 What role do proteins play in transport?
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22 What kinds of cells have cell walls?
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23 Describe the fluid cell membrane
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24 What are the two roles of cholesterol in the membrane?
a ________________________________________________________
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b ________________________________________________________
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25 What are glycoproteins made up of, and what is their role in the
membrane? Name an important glycoprotein.
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26 What are glycolipids made up of, and what is their role in the membrane?
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27 Draw and describe the structure of a phospholipid - indicate the charges on
the molecule.
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28 Is fat = phospholipid? why/why not?
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29 Describe the charge distribution of the membrane.
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30 Why can’t water move through the membrane?
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31 What are the characteristics and examples of substances that can move
easily through the membrane?
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32 How do proteins assist in transport?
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33 What kinds of particles move through proteins?
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34 What kinds of transport do proteins assist with?
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35 Name two characteristics of the cell wall.
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36 What material makes up the cell wall of
a Plants: _________________________________________________
b Bacteria: _______________________________________________
c Fungi: _________________________________________________
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