What would happen if the plasma membrane were composed solely of phospholipids and no proteins?
A) Immune reactions would not be affected.
B) The movement of molecules across the membrane would not be affected.
C) All movement of molecules across the membrane would cease.
D) Simple diffusion and osmosis would continue to occur.
E) Only water would be able to pass through the membrane.
D
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Which statement about lipid bilayers is false?
a. They are inflexible. b. They are self-sealing. c. They resist forming free ends. d. They can fuse with other bilayers. e. They spontaneously form closed vesicles
The complement system is _____
A) a set of proteins involved in innate but not acquired immunity B) a group of proteins that includes interferons and interleukins C) a group of antimicrobial proteins that act together in a cascade fashion D) a set of proteins that act individually to attack and lyse microbes
What would be an easy way to determine if a skull is a mammal's skull?
A. Examine the teeth. B. Look for the remains of the tympanum. C. Look for air sacs in the skull. D. Measure the brain case volume.
@The role of interferons is to protect the cells against viral infections.
a. Neutralization b. Opsonization c. Complement activation d. Primary immune response