________ first described bacterial cells in a 1684 manuscript by referring to them as "wee animalcules."
a. Antoni van Leeuwenhoek
b. Carl Woese
c. Louis Pasteur
d. Robert Hooke
Answer: A
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Inflammation of the larynx that is usually associated with the common cold or influenza syndromes and that is caused almost exclusively by viruses is:
a. laryngitis. b. laryngotracheobronchitis. c. epiglottitis. d. Vincent angina.
Human diploid cells have how many chromosomes?
a. 12 b. 23 c. 46 d. 69 e. 92
Homologous chromosomes migrate to opposite poles during
A) telophase II and cytokinesis. B) prophase II. C) anaphase I. D) metaphase I. E) metaphase II
Paleontological studies indicate that, over millions of years,
A. the extinction of species is not related to the community in which they lived. B. species that occurred together in the distant past still occur together today; the community has held constant. C. groups of species that have coevolved rise and go extinct together. D. species richness is constant over time. E. species seem to come and go individually as niches within a community become available.