Expression of a microRNA complementary in sequence to a gene _____ that gene
a. blocks transcription of
b. replicates
c. speeds transcription of
d. inhibits translation of
e. methylates the bases in
d
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Media that can be used for the isolation of Mycoplasma include:
a. Thayer-Martin agar with vitamin K. b. 5% sheep blood and IsoVitaleX. c. beef or soybean protein with serum and fresh yeast extract. d. hemin and nicotina-mide-adenine-dinucleotide (NAD) sup-plements.
Tinea pedis is
A. an infection of scalp hair. B. known as "jock itch." C. known as "athlete's foot." D. a beard infection.
How do large polar and charged molecules cross biological membranes?
A) Large polar and charged molecules can't cross biological membranes. B) Large polar and charged molecules cross biological membranes via diffusion through the hydrophilic core of the membrane. C) Large polar and charged molecules must be hydrolyzed before they can cross a biological membrane. D) Large polar and charged molecules cross biological membranes via transport proteins that form hydrophilic channels through the membrane. E) Both A and C
Michelle has a clone of the DNA of a newly discovered virus. She wants to identify which specific cells of an organ are infected by the virus. What method would be the most useful to answer this question?
A. Sanger sequencing of the clone B. real time PCR C. FISH (fluorescent in situ hybridization) D. restriction fragment analysis E. microinjection of the gene fragment