A plant stoma is found between two
a. leaves.
b. root hairs.
c. xylem veins.
d. trichomes.
e. guard cells.
E
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Both miRNA and siRNA work in conjunction with:
A. RNA polymerase to bind primary RNA transcripts in the nucleus. B. hairpin structures to bind primary RNA transcripts in the cytoplasm. C. a protein complex called RISC to bind primary RNA transcripts in the nucleus. D. a protein complex called RISC to bind primary RNA transcripts in the cytoplasm. E. a combination of rRNA and a protein complex called RISC to bind primary RNA transcripts in both the cytoplasm and the nucleus.
Allergies are acquired following:
A) most bacterial infections. B) initial exposure to an allergen. C) indirect exposure to an allergen. D) repeated exposure to an allergen.
What type of vaccine is the hepatitis B vaccine?
A. inactivated whole pathogen B. attenuated vaccine C. toxoid vaccine D. a recombinant vaccine composed of a single antigen of the hepatitis virus E. a vaccine produced by treating the virus with formaldehyde
Where do transcriptional regulators most commonly bind to?
a. major grooves in dsDNA b. minor grooves in dsDNA c. primary supercoils d. promoter sequences