Small RNA molecules that specifically bind complementary mRNA sequences and facilitate the destruction of the message by nucleases are
A) mRNAs.
B) siRNAs.
C) tRNAs.
D) rRNAs.
E) miRNAs.
B) siRNAs.
Biology & Microbiology
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HIV destroys the immune system by primarily destroying
A) cytotoxic T cells. B) B cells. C) helper T cells. D) erythrocytes.
Biology & Microbiology
Which of the following is typically a symptom of systemic mycoses?
a. respiratory difficulties b. itchy skin c. allergic reactions d. yeast infections
Biology & Microbiology
The five different immunoglobulin classes are distinguished by their
a. CH regions. b. C? regions. c. D regions. d. JH regions. e. VH regions.
Biology & Microbiology
Which direction are phosphodiester bonds of DNA usually built in?
A) 3' ? 5' B) 5' ? 1' C) 1' ? 5' D) 5' ? 3' E) Any direction is fine and will not affect the function of the DNA strand.
Biology & Microbiology