The transcription terminator
A. results in a hairpin loop structure in RNA.
B. results in the polymerase falling off the DNA template.
C. stops DNA polymerase.
D. adds a terminator nucleotide to the RNA.
E. results in a hairpin loop structure in RNA AND results in the polymerase falling off the DNA template.
E
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A key difference between transforming plant cells and human cells is
A. genes to be expressed in human cells require a eukaryotic promoter, and genes to be expressed in plants don't. B. DNA cannot be introduced into human cells. C. Agrobacterium is commonly used as a tool to directly transform plant cells but not human cells. D. a vector is needed to introduce DNA into human cells and not plant cells.
Which of the following represents the correct order of appearance of characters in fungal evolution?
A. chitinous cell walls, hyphae, regular septa, complex multicellular fruiting bodies B. chitinous cell walls, hyphae, complex multicellular fruiting bodies, regular septa C. hyphae, chitinous cell walls, complex multicellular fruiting bodies, regular septa D. hyphae, regular septa, chitinous cell walls, multicellular fruiting bodies E. multicellular fruiting bodies, regular septa, hyphae, chitinous cell walls
The structures indicated by the arrows in Figure 4-3 are:a
intermembrane space. b. grana. c. cristae. d. matrices. e. plastids.
Which of the following statements about measles is FALSE?
A) It is a serious disease. B) It is preventable by vaccination. C) Annually, it kills thousands of children worldwide. D) The disease has been eradicated in the United States. E) Complications include pneumonia, encephalitis, and death.