Innate immunity is a defense system that becomes fully functional after it has undergone a period of exposure to various pathogens.
Answer the following statement true (T) or false (F)
False
Innate immunity is a defense system that is fully functional without any exposure to pathogens.
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Adult stem cells are ______________¬ cells, whereas embryonic stem cells are ______________ cells
A. pluripotent / totipotent B. unipotent / multipotent C. multipotent / pluripotent D. multipotent / totipotent
The name given to rat-bite fever when the illness is caused by acquired Spirillum minus is:
a. sodoku. b. Haverhill fever. c. monillic fever. d. monillic gastritis.
The discovery of antibodies and the understanding of their actions lead to
A) improved vaccine design. B) the development of genetically engineered vaccines. C) improved methods of immunization. D) the development of passive immunotherapy. E) the use of the technique known as variolation.
Base pairs in DNA are held together by _____ bonds.
A) Hydrogen B) Sulfhydryl C) Peptide D) Polar covalent E) Nonpolar covalent