7952382
Descripción
Test por Daniel Brand, actualizado hace más de 1 año
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Creado por Daniel Brand
hace casi 8 años
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Pregunta 1
Pregunta
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.
Respuesta
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phospholipid
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bilayer
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Hydrophilic
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hydrophobic
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fluid
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mosaic
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model
Pregunta 2
Pregunta
The molecule MOST responsible for plasma membrane fluidity is...
Respuesta
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Phospholipid
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Cholesterol
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Protein channel
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Integral protein
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Cytoskeleton
Pregunta 3
Pregunta
A protein with a carbohydrate attached to it is called a [blank_start]glycoprotein[blank_end].
Respuesta
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glycoprotein
Pregunta 4
Pregunta
Which of the following statements are true about cell surface membranes? Select all that apply.
Respuesta
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Partially permeable.
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Regulate transport into/out of cells.
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Primary organelle involved in modifying and packaging polypeptides.
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Displaying antigens.
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Reaction site for some metabolic pathways.
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Site of glycolysis.
Pregunta 5
Pregunta
All biological membranes are roughly the same as they fulfill the same role.
Respuesta
- True
- False
Pregunta 6
Pregunta
Which of the following statements correctly describe the effect of temperature on fatty acids? Select all that apply.
Respuesta
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As the temperature decreases, saturated fatty acids become less fluid.
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As the temperature decreases, saturated fatty acids become more fluid.
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As the temperature decreases, unsaturated fatty acids become more fluid.
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As the temperature decreases, unsaturated fatty acids become less fluid.
Pregunta 7
Pregunta
Which of the following statements correctly describe the effect of temperature on biological membranes? Select all that apply.
Respuesta
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As the temperature increases, the membrane becomes more fluid.
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As the temperature increases, the membrane becomes less permeable.
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As the temperature increases, membrane components move around more.
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As the temperature increases, cholesterol works to make the membrane more fluid.
Pregunta 8
Pregunta
Which of the following can denature proteins in biological membranes?
Respuesta
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High temperatures
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Low temperatures
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Extreme pH
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Acetone
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Ethanol
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Water
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