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- 1. Multiple Choice
What do the brown structures represent?PhospholipidsGlycoproteinsChannel ProteinsCyctoskeleton Filaments - 2. Multiple ChoiceWhich part of this phospholipid is hydrophobic?fatty lipid tailsheadall of it is hydrophobicnone of it is hydrophobic
- 3. Multiple ChoiceWhen looking at the cell membrane, where are the lipid tails located?Inner part of the bilayerOuter part of the bilayerAt the end of the bilayerGoes through each end of the bilayer
- 4. Multiple ChoiceWhat is embedded in the phospholipid bilayer?proteinssaltwatertrapped animals
- 5. Multiple ChoiceHydrophobic region of the cell membrane?EBCA
- 6. Multiple ChoiceHydrophilic portion of cell membrane?ACDE
- 7. Multiple ChoiceThe cell membrane is made up ofPolar heads, non-polar tailsNon-polar heads, polar tailsPolar heads, polar tailsNon-polar heads, non-polar tails
- 8. Multiple Choice
This protein binds onto items outside the cell, and causes chemical changes inside of the cell.
cell surface marker
transport
receptor
enzyme
- 9. Multiple Choice
Phospholipids can form bilayer structures because of their:
A. Rectangular shapes
B. Amphipathic nature.
C. Ability to dissolve well in water.
D. Inability to associate with other phospholipids.
- 10. Multiple Choice
Cholesterol within membranes functions as a(an) ____________ through its interactions with both hydrophobic and hydrophilic parts of phospholipids.
A. Stabilize the membrane structure
B. pH buffer
C. Energy source
D. Temperature controller
- 11. Multiple Choice
The presence of double bonds in the fatty acyl tail will
A. decrease fluidity because of the attraction between the unsaturated tails.
B. increase fluidity due to the difficulty of the kinked acyl tail to interact.
C. decrease fluidity by increasing the space between the phospholipids.
D.increase fluidity by allowing more room for cholesterol to move into the membrane.
- 12. Multiple Choice
The selectively permeable characteristic of plasma membranes is mainly due to the presence of
A. Phospholipids
B. Transport proteins.
C. Glycolipids on the outer surface of the membrane.
D. Cholesterol
- 13. Multiple Choice
What type of protein is labeled A & B?
Peripheral proteins
Integral proteins
- 14. Multiple Choice
What type of protein is labeled C?
Peripheral protein
Integral protein
Channel protein
- Answer choicesTagsAnswer choicesTags