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WorksheetsCell Membrane Structure
Total questions: 20
Worksheet time: 13mins
Regulating what enters and leaves the cell helps the cell maintain _________________-.
homeostasis
heredity
___________ in the cell membrane allow cells to recognize each other and act like ID tags.
Proteins
Carbohydrates
How many layers is the lipid bilayer?
2
3
The function of the plasma membrane is....
to regulate what enters and leaves the cell.
fight bacteria and viruses that enter the cell.
"Water Loving"
Hydrophilic
Hydroelectric
Describes the arrangement of the cell membrane as
made of many parts that can flow and move.
The Stuck in Place Model
The Fluid Mosaic Model
___________ form the two layers of the cell membrane.
Carbohydrates
Phospholipids
Which of the following is a true statement?
Cells are large because it allows a slower rate of chemical exchange.
Cells are small because it allows a faster rate of chemical exchange.
Which of the following molecules pass easily through the cell membrane, requiring little extra help or energy? Select all that apply.
sodium ion
glucose
oxygen
carbon dioxide
Which of the following molecules don't pass easily through the cell membrane,
requiring extra help or input of energy? (CHECK ALL)
sodium ion
glucose
oxygen
carbon dioxide
The ability to allow only certain molecules into or out of the cell.
Unpermeability
Semipermeability
Which of the following are embedded in the phospholipid bilayer and help substances pass through?
lipids
proteins
Which if the following is not a structural part of the cell (plasma) membrane?
phospholipids
DNA
Which image correctly shows the way phospholipids arrange themselves in the cell (plasma) membrane?
Which of the following is NOT a description of substances
that can easily pass through the phospholipid bilayer?
small, uncharged molecules
large molecules that are soluble in water
All cells are surrounded by cell membranes.
true
false
Which molecule helps the membrane to be flexible?
protein
cholesterol
Identify the part of the membrane that allows small nonpolar molecules to pass through
Locate a channel protein in the cell membrane.
