a. isoleucine (Ile)
a. DNA degradation level
b. transcriptional level
c. post-transcriptional level
d. translational level
b. transcriptional level
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Which of the following are correct pairings of histone variants and their functions?
A. H3.3 ? stabilizes the open state (transcriptionally active) B. CENPA ? maintains kinetochore attachment C. H2AX ? DNA repair D. macroH2A ? X chromosome inactivation E. All of these choices are correct.
Plants use what form of nitrogen to make the building blocks for proteins and nucleic acids?
a. nitrogen gas b. nucleic acids c. ammonium d. urea e. nitrous oxide
Which of the following is not common to all vertebrates?
a. a forebrain b. a hindbrain c. a convoluted cerebrum d. a dorsal tubular spinal cord e. a midbrain
Which of the following is a protozoan with two nuclei and no mitochondria?
A) Plasmodium B) Paramecium C) Euglena D) Giardia E) Trichomonas