Prokaryotes that are curved and comma-like are called ____
a. cocci
b. bacilli
c. vibrios
d. spirilla
e. sarcina
ANSWER: c
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How do fossils provide evidence of evolutionary history?
A. Fossils provide an accurate account of the number of species that exist at any particular time. B. Older fossils are an excellent source of DNA from which we can construct molecular phylogenies. C. Fossils provide a record of extinct species. D. Fossils provide complete information on extinct species.
Tetrapods are most closely related to ____
a. lungfish b. ray-finned fish c. cartilaginous jawed fish d. cartilaginous jawless fish e. lancelets
In a lichen, the fungal partner ________.
A. provides a substratum within which the alga grows B. protects the alga from excess light intensities C. provides water and minerals to the alga D. All of the choices are correct.
A color-blind (recessive trait) woman will pass the allele to
a) her husband. b) none of her children. c) her sons only. d) her daughters only. e) all her children.