The perianth of a flower consists of
A. the pedicel and receptacle.
B. the pistil and stamens.
C. the petals and sepals.
D. the style and ovary.
E. the anthers and stigma.
Answer: C
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Which causes uncontrolled growth of plant tissue, resulting in a tumor?
A. Rhizobium B. Agrobacterium C. Bacillus anthracis D. Yersinia pestis
Picea glauca is a seed-bearing plant. What other characteristic MUST be true of this species?
A. It produces flowers. B. It produces fruits. C. The gametophyte is the dominant generation. D. It has vascular tissue. E. Double-fertilization results in the production of endosperm.
If Marfan syndrome results in death, it is usually due to rupture of the ____________________. Fill in the blank(s) with the appropriate word(s)
You have isolated the gene for a protein, nuculin (a protein that some people believe resides in the nuculus) that is normally localized to the nucleus. You locate in the gene the portion of the coding sequence that codes for the nuclear localization signal (NLS) and engineer it so that a positively charged amino acid in the signal is replaced by a nonpolar amino acid) You then insert the gene into some cells and observe where nuculin goes after its synthesis. What is the effect, if any?
a) Nuculin is not moved to the nucleus. b) Nuculin is not made by the cell at all. c) There is no effect. d) Nuculin moves to the nucleus as it usually does.