You work for a successful company that sells maternity clothes. They have asked you to evaluate whether Australia or Singapore would be a better country to expand into with new stores. What keyword will help you find the data you need to make this evaluation?
A. Metapopulation
B. Dispersal
C. Range expansion
D. Demographics
Answer: D
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Auxin moves between cells through a process called polar transport. Auxin molecules move from one cell to the next through PIN proteins. However, their movement is unidirectional. What accounts for this unidirectional movement?
A. PIN proteins are only found on the basal side of the cell. B. PIN proteins are only found on the apical side of the cell. C. Auxin diffuses down its concentration gradient. The concentration of auxin molecules decreases as you move down the stem away from the apical meristem. D. Auxin moves independently of its concentration gradient because the presence of the PIN protein provides a channel that auxin can "leak" through to get into adjacent cells. E. Auxin in the unprotonated form can move between cells by going into adjacent spaces occupied by plant cell walls. The movement of auxin is lateral, not unidirectional.
Describe at least 3 of the adaptations used by plankton in their efforts to remain near the surface
What will be an ideal response?
Two users of an internet gardening site are arguing. Sarah, an organic gardener from Maine, refers to her snapdragon plants as "annuals." Marco, a farmer from Italy, scoffs and declares them "perennials." Who is right?
A. They are both right. In a Mediterranean climate, the snapdragon re-emerges from its rootstock each spring. In colder climes, it must be replanted each year. A plant that is perennial in its native habitat may be an annual in other climates. B. Sarah is right. A snapdragon plant only returns for 3-4 years, and thus is not a true perennial. C. Marco is right. With enough inorganic fertilizer, the snapdragon can regrow. All "annuals" are just undernourished perennials. D. They are victims of bad translation software. The plant Marco refers to reseeds itself year after year and thus is a perennial.
Why are embryonic stem cells different from adult stem cells?
a. they can become any kind of cell (totipotent) b. they are haploid c. they have different genes d. they are committed