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- 1. Multiple Choice
Which type of biological macromolecule is the main component of the plasma membrane?
carbohydrate
lipid
protein
nucleic acid
- 2. Multiple ChoiceWhat is NOT TRUE about the cell membrane?It controls what enters and leaves the cellSemipermeablePhospholipid bilayerContains digestive enzymes
- 3. Multiple Choice
Define plasma membrane
lipid that helps minimize effects of temperature
only on the outer surface of the plasma membrane and are attached to proteins or lipids; form distinctive cellular markers
flexible boundary of a cell that separates a cell from its surroundings
may extend partway into the plasma membrane, cross the membrane entirely, or be loosely attached to its inside or outside face
- 4. Multiple ChoiceWhat forms the channels and pumps in the phospholipid bilayer?carbohydratesproteinshydrophilic headslipids
- 5. Multiple ChoiceWhich statement best describes the cell membrane?The protective outer layer that controls what enters and leaves the cell.Stores information on DNA molecules / Directs and controls the activities of the cell.A folded membrane that moves materials around inside cells / Also acts as the site of manufacturing materials needed by the cell.The smallest organelle with a huge job / Makes proteins, which are the building blocks of the body.
- 6. Multiple ChoiceTrue or false: Regulating what enters and leaves the cell helps the cell maintain homeostasis.TrueFalse
- 7. Multiple Choice___________ have 2 functions in the cell membrane.
1.) They act like gatekeepers, only let certain things in.
2.) Enzyme receptors embedded in the membrane.CarbohydratesProteinsPhospholipidsCholesterol - 8. Multiple ChoiceWhich of the following is responsible for getting large or charged (polar) molecules across the cell membrane?EBCD
- 9. Multiple ChoiceSomething is ___________ ____________
when some molecules can cross the membrane while others cannot.Selectively (or Semi) PermeableTotally TransparentLiquid LicoriceHeavily Patrolled - 10. Multiple ChoiceThe cell membrane is selectively permeable, which means...All materials can enter and leave the cellCertain things can enter while others cannotThe cell manually sorts through all materialsOnly certain cells can interact with the cell.
- 11. Multiple ChoiceThis cell organelle helps organisms maintain homeostasis by controlling what substances may enter or leave cells.vacuolenucleuscell membranecell wall
- 12. Multiple ChoiceA phospholipid has 2 parts. What are they called?Hydrophilic Head, Hydrophobic TailHydrophobic Head, Hydrophilic Tail
- 13. Multiple Choice"Water Loving"HydrophobicHydrophilicHydroelectricHydroloric
- 14. Multiple Choice
In a lipid bilayer, ___________ fatty acid tails face each other within the bilayer and form a region that excludes water.
A. Hypotonic
B. Hypertonic
C. Hydrophilic
D. Hydrophobic
- 15. Multiple ChoiceAnother term for equilibrium is...EqualityBabycakesHomeostasisBalance
- Answer choicesTagsAnswer choicesTags