A(n) ________ is a piece of DNA with all of the features necessary for chromosomal replication and which can carry large (up to 1000 kb) pieces of foreign DNA into a host organism.
What will be an ideal response?
artificial chromosome
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Which of the following is not true of miRNA processing?
A. Drosha processes primary miRNA transcripts to precursor miRNAs. B. RISC binds to pre-miRNA in the cytoplasm. C. RNA helicase is necessary for unwinding the miRNA duplex. D. Dicer completes the processing by cleaving the single-stranded form of the miRNA.
Following ovulation, the vesicular follicle develops into a _________ _________
Fill in the blank(s) with the appropriate word(s)
Which of the following is not a complementary base pair found in DNA molecules?
A. Adenine-thymine B. Adenine-uracil C. Guanine-cytosine D. All of the choices are correct.
Vampire squid (Vampyroteuthisinfernalis) are deep-sea cephalopods with features similar to both octopus and squid. Extensive video recordings show the diet of the vampire squid consists of items like crustacean remains and fecal pellets. Which of the following terms describes the position of the vampire squid in the deep-sea trophic pyramid?
A. Primary producer B. Secondary carnivore C. Detritivore D. Herbivore E. Primary carnivore