Proteins with positive charges that are wrapped around DNA within chromosomes are
A. centromeres.
B. chromatids.
C. histones.
D. kinetochores.
Answer: C
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The first host response to a nonspecific tissue injury is described as
A. inflammation. B. reaction. C. antibodies. D. trauma.
Which interaction is MOST important in enhancing the solubility of macromolecules in water?
A) hydrophobic interactions B) H bonds C) both hydrophobic interaction and nonpolar covalent bonds D) nonpolar covalent bonds E) van der waals forces
A linear DNA fragment is cut with a restriction enzyme to yield two fragments. How many restriction sites are there for the enzyme in this fragment?
A. one B. two C. three D. four E. It cannot be determined with this information.
What microbes thrive in waterlogged soil?
A. anaerobes B. obligate aerobes C. halophiles D. thermophiles E. bacteria capable of forming endospores