What is the first level of control of eukaryotic gene transcription?
A) RNA splicing
B) attachment of RNA polymerase to the promoter
C) DNA packing and unpacking
D) the binding and unbinding of transcription factors to enhancer sequences
C
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Vertebrate bone consists primarily of a crystalline mixture of
A. Ca2+, PO4-2. B. Ca2+, SO4-2. C. Ca2+, Cl2. D. Na+, Cl-. E. Adenosine, PO4-2.
A dendrite of a sensory neuron is classified as a(n) ____
a. free nerve ending b. encapsulated receptor c. sensory receptor d. sensory stimulus e. tertiary sensory neuron
Mobile bits of DNA that can jump from one location on a chromosome to another location and do not code for a protein are called
A. transposons. B. exons. C. introns. D. pseudogenes. E. simple sequence repeats.
Starch in plants is functionally most similar to _____ in animals.
A) cellulose B) chitin C) protein D) glycogen E) triglyceride