Do the two DNA double helices following DNA replication have the same, or a different, composition?
a. different
b. same
Answer: b. same
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Embryonic stem cells derived from blastocysts are pluripotent, and therefore useful in stem cell research because they ________
a. are viable under a wide range of laboratory conditions b. do not replicate and are therefore stable long-term c. can form all cells, tissues, and organs of the human body d. are specialized and therefore arrested in G0 e. function to replace damaged or diseased body parts in adults
Predators can switch to alternative prey when a prey
species is low in abundance as is shown in a. model I. b. model II. c. model III. d. models I and III. e. all of these models.
Axopodia of Rhizaria are used for feeding rather than for motility.
Answer the following statement true (T) or false (F)
Short, hair-like structures used only by eukaryotic cells for movement are called
A. pili. B. flagella. C. fimbriae. D. pseudopodia. E. cilia.