Heterotrophic protists are called _________
Fill in the blank(s) with the appropriate word(s)
Answer: Protozoa
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Embryonic stem cells have the ability to become any cell type of the body. This capacity is termed:
a. differentiation b. multidirectional c. undifferentiated d. pluripotency e. genetically undefined
In which phase of mitosis are the chromosomes lined up on the equator?
a. anaphase b. prophase c. cytokinesis d. telophase e. metaphase
One of your professors says that fleas jump so high because they have specially adapted leg structures and muscles. But your other professor says that fleas jump high because evolution selected for individuals with genes that helped them avoid being damaged by the scratching behavior of their host. So -- why do fleas jump high?
A. Because evolution selected for individuals with genes that helped them avoid being damaged by the scratching behavior of their host. B. The proximate cause is that they have specially adapted leg structures and muscles, and the ultimate cause is that evolution selected for individuals with genes that helped them avoid being damaged by the scratching behavior of their host. C. The ultimate cause is that they have specially adapted leg structures and muscles, and the proximate cause is that evolution selected for individuals with genes that helped them avoid being damaged by the scratching behavior of their host. D. Because they have specially adapted leg structures and muscles.
Which statement about conifers such as the spruce tree is most accurate?
A) Male conifers produce cones while female trees produce flowers. B) They are the largest seedless vascular plants. C) They comprise about three-fourths of all gymnosperm species. D) They are rare, fruit-bearing gymnosperms. E) They comprise a small percentage of angiosperm species.