Structure and Function of Membranes

Daniel Brand
Quiz by Daniel Brand, updated more than 1 year ago
Daniel Brand
Created by Daniel Brand over 3 years ago
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Biology (Biological Membranes) Quiz on Structure and Function of Membranes, created by Daniel Brand on 03/04/2017.
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Question 1

Question
The main component of a biological membrane is a [blank_start]phospholipid[blank_end] [blank_start]bilayer[blank_end]. [blank_start]Hydrophilic[blank_end] heads face out while [blank_start]hydrophobic[blank_end] tails face in. The model is called a "[blank_start]fluid[blank_end] [blank_start]mosaic[blank_end] [blank_start]model[blank_end]" because there are several components making up the membrane, which all move laterally relative to each other.
Answer
  • phospholipid
  • bilayer
  • Hydrophilic
  • hydrophobic
  • fluid
  • mosaic
  • model

Question 2

Question
The molecule MOST responsible for plasma membrane fluidity is...
Answer
  • Phospholipid
  • Cholesterol
  • Protein channel
  • Integral protein
  • Cytoskeleton

Question 3

Question
A protein with a carbohydrate attached to it is called a [blank_start]glycoprotein[blank_end].
Answer
  • glycoprotein

Question 4

Question
Which of the following statements are true about cell surface membranes? Select all that apply.
Answer
  • Partially permeable.
  • Regulate transport into/out of cells.
  • Primary organelle involved in modifying and packaging polypeptides.
  • Displaying antigens.
  • Reaction site for some metabolic pathways.
  • Site of glycolysis.

Question 5

Question
All biological membranes are roughly the same as they fulfill the same role.
Answer
  • True
  • False

Question 6

Question
Which of the following statements correctly describe the effect of temperature on fatty acids? Select all that apply.
Answer
  • As the temperature decreases, saturated fatty acids become less fluid.
  • As the temperature decreases, saturated fatty acids become more fluid.
  • As the temperature decreases, unsaturated fatty acids become more fluid.
  • As the temperature decreases, unsaturated fatty acids become less fluid.

Question 7

Question
Which of the following statements correctly describe the effect of temperature on biological membranes? Select all that apply.
Answer
  • As the temperature increases, the membrane becomes more fluid.
  • As the temperature increases, the membrane becomes less permeable.
  • As the temperature increases, membrane components move around more.
  • As the temperature increases, cholesterol works to make the membrane more fluid.

Question 8

Question
Which of the following can denature proteins in biological membranes?
Answer
  • High temperatures
  • Low temperatures
  • Extreme pH
  • Acetone
  • Ethanol
  • Water
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