The helical coil shape of an ?-helix fibrous protein provides what type of property to that protein?
a. rigidity
b. strength
c. elasticity
d. heat tolerance
e. water retention
c
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What is most closely associated with membrane-attack complexes (MACs)?
a. complement proteins b. helper T cells c. B cells d. histamines e. cytokines
Which of the following statements explaining the differences in number and types of peripheral
proteins found on the inner and outer surfaces of cell membranes is correct? a. The functions of the membrane differ on the inside and outside of the cell. b. Not all proteins can pass through the membrane and, thus, more accumulate on the inside. c. Proteins on the outside of the membrane are synthesized at a slower rate than proteins on the inside of the membrane. d. Proteins on the outside of membrane are made extracellularly and are unable to penetrate the phospholipid bilayer and enter the cell. e. The external peripheral proteins are weakly attached to the membrane and are readily washed away.
Which includes one of the others as a specific type?
A. T cells B. macrophages C. B cells D. plasma cells E. neutrophils
Why did Alexander Fleming suspect he could get penicillin from a species of mold?
A) Soldiers drinking fermented alcohol were less likely to have bacterial infections. B) Patients infected with a fungus like, athlete's foot, were less likely to have bacterial infections. C) Soldiers eating moldy bread were not suffering from wound infections. D) Bacteria on culture plates were unable to grow near mold contamination. E) Wounds with superficial mold on the bandages were not becoming septic.