Some marine species of cyanobacteria
A. do not have flagella and are, therefore, nonmotile.
B. do not have flagella but are, nonetheless, motile by some unknown mechanism.
C. do not have flagella but are motile by means of pseudopods.
D. have flagella and are, therefore, motile.
Answer: B
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All of the following are associated with IgE and mast-cell-mediated allergy except ________.
A. eczema B. anaphylaxis C. systemic lupus erythematosus D. drug allergies E. allergic asthma
At the end of interphase, the part of the microtubule farthest from the centrosome is the _______ end.
a. plus b. minus c. pointed d. barbed e. capped
Figure on p. 737
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Use the figure above showing the process of gastrulation to answer the following question.
The letter "A" in the accompanying figure represents ____.
A. ectoderm B. endoderm C. mesoderm D. neural plate E. yolk
In estimating a fixed effects model using panel data, which of the following variables will not be effective controls if you use a full set of (cross sectional) fixed effects for individuals?
A. Yearly (cumulative) education attainment for individuals B. Birthplace of the individual C. Income taxes paid D. Year to year changes in income for individuals