All microorganisms are best defined as organisms that
A) Cause human disease
B) Are too small to be seen with the unaided eye
C) Lack a cell nucleus
D) Are infectious particles
E) Can only be found growing in laboratories
B) Are too small to be seen with the unaided eye
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Use the following graph and information to answer the question below
Flycatcher birds that migrate from Africa to Europe feed their nestlings a diet that is almost exclusively moth caterpillars. The graph below shows the mean dates of arrival, bird hatching, and peak caterpillar season for the years 1980 and 2000. The shift in the peak of caterpillar season is most likely due to _____. A) pesticide use B) earlier migration returns of flycatchers C) an innate change in the biological clock of the caterpillars D) global warming E) acid precipitation in Europe
What can be said about Drosophila development?
A. Paternal genes determine the initial course of development after fertilization. B. Zygotic genes determine the initial course of development after fertilization. C. Maternal genes determine the initial course of development after fertilization. D. Syncytial blastoderm genes determine the initial course of development after fertilization.
Were similar amounts of all classes of biochemical detected in each sample?
a. Yes b. No
The function of lymph nodes is to filter pathogens, microorganisms, and abnormal cells from the lymph before it returns to the cardiovascular system.
a. true b. false