Proteins are polymers of
1.amino acids.
2.fatty acids.
3.nucleotides.
4.monosaccharides.
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Rickettsia rickettsii are readily phagocytized by macrophages.Why doesn't this control the infection and prevent the development of Rocky Mountain spotted fever?
A. The bacteria are toxic for T cells and prevent the development of cell-mediated immunity. B. The bacteria escape from the phagosome and reproduce in the cytoplasm of the phagocyte. C. The bacteria interfere with the development of antibodies. D. The bacteria are unable to inactivate complement.
All of the following maternal infections may cause congenital anomalies in the embryo, EXCEPT
A. Cytomegalovirus B. Herpes C. Rhinovirus D. Rubella E. Toxoplasmosis
Twins are concordant for a trait when ____
a. both twins share the trait with at least one parent b. only identical twins have the trait c. only fraternal twins have the trait d. both twins have the trait e. all of the twins’ siblings have the trait
In interference competition, two or more populations use the same limiting resource
Indicate whether the statement is true or false.