Answer the question using the accompanying figure. Mitosis is occurring in step(s) ____
a. 7 only
b. 8 only
c. 10 only
d. 7 and 8
e. 7, 8, and 10
ANSWER: d
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Which of the following statements is not a reason that conifers are absent from the tropics and are seemingly restricted to more temperate, cooler regions?
A. Conifers' single-celled tracheids cannot support large levels of transpiration, whereas those of angiosperms can. B. Conifer pollination was not as effective in the tropics as their populations became fragmented by angiosperm competition. C. In colder regions the dangers of cavitation due to freezing restrict angiosperm growth. D. In drier regions, the dangers of cavitation due to drought restrict conifer growth.
The shape of the lens of the eye can be changed to allow focusing on certain objects at different distances from the head. The structure that produces this shape change is the ________
A) eyelid muscle B) ciliary body C) extrinsic muscle D) papillary muscle
____ directly deliver blood to the glomeruli
a. Afferent arterioles b. Efferent arterioles c. Peritubular capillaries d. Renal arteries e. Renal venules
Which activity is an example of biotechnology?
A. Egyptians using moldy bread on wounds B. Escherichia coli producing human insulin C. Public health officials monitoring diseases in a community D. A microbiologist using the microscope to view bacteria E. Bacteria in the soil secreting an antibiotic to kill competitors