Turtles are members of the ____ reptilian lineage
a. Testudines
b. Archosauria
c. Squamata
d. Sphenodontida
e. Amphibia
ANSWER: a
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Which of the following is NOT a common step in creating a genomic library?
A) Fragment DNA into small segments. B) Hybridize DNA sequences to form inserts of a target size range. C) Ligate DNA into vectors. D) Transform the vectors into a host.
Class II MHC proteins have grooves with
A) closed ends. B) open ends. C) both open and closed ends. D) neither open nor closed ends.
All of the following statements are true about
eukaryotes with one exception. Select the exception.
a. eukaryotes have a nucleus. b. eukaryotes are similar to prokaryotes at a molecular level. c. eukaryotes are sometimes unicellular organisms. d. eukaryotes are similar to prokaryotes at a structural level. e. eukaryotes include plants, fungi, and protists.
Which of the following explains the events occurring when water boils?
a. Hydrogen bonds are broken between neighboring water molecules. b. Covalent bonds are broken between oxygen and hydrogen atoms. c. Ionic bonds are broken when the minerals in water are heated. d. The bond between one water molecule and another is strengthened. e. The hydrogen atoms break away from the oxygen and escape as vapor.