In the primary stage of syphilis, the initial symptom is a small, painless, reddened ulcer called a ________.
Fill in the blank(s) with the appropriate word(s).
chancre
Biology & Microbiology
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Which of the following must bring in a virion-associated RNA-dependent RNA polymerase when it infects host cells?
A. +ssRNA viruses B. -ssRNA viruses C. All of the choices are correct. D. +dsRNA viruses
Biology & Microbiology
Fats that your body cannot make are called____
a. essential fatty acids b. triglycerides c. phospholipids d. saturated fats e. sterols
Biology & Microbiology
Transgenic organisms are used to aid studies of:
a. genetic diseases. b. gene expression. c. immune system function. d. viral diseases. e. genes involved in cancer development.
Biology & Microbiology
Fertilized chicken eggs are used to culture some vaccine strains.
Answer the following statement true (T) or false (F)
Biology & Microbiology