The main component of a biological membrane is a . heads face out while tails face in. The model is called a " " because there are several components making up the membrane, which all move laterally relative to each other.
The molecule MOST responsible for plasma membrane fluidity is...
Phospholipid
Cholesterol
Protein channel
Integral protein
Cytoskeleton
A protein with a carbohydrate attached to it is called a .
Which of the following statements are true about cell surface membranes? Select all that apply.
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.
All biological membranes are roughly the same as they fulfill the same role.
Which of the following statements correctly describe the effect of temperature on fatty acids? Select all that apply.
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.
Which of the following statements correctly describe the effect of temperature on biological membranes? Select all that apply.
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.
Which of the following can denature proteins in biological membranes?
High temperatures
Low temperatures
Extreme pH
Acetone
Ethanol
Water
