After removal of the RNA primers and replacement with DNA nucleotides, the single-stranded nick adjacent to Okazaki fragments is filled in through a reaction that involves which enzyme?
A) DNA primase
B) SSB protein
C) RNA polymerase
D) DNA ligase
E) DNA helicase
D
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If you had a garden full of a variety of plants, you might notice that the only pollinators of a
plant called trumpet vines are hummingbirds. Can you anticipate anything about the appearance of these flowers? What is the advantage of having a single pollinator for your plant species?
What will be an ideal response?Which part of a hemoglobin molecule binds to a molecule of O2?
A. the hydrophobic pocket between two a chains B. the copper atom wedged between an a and a b globin chain C. the iron atom in the center of a heme group D. the surface of a b globin chain E. the surface of an a globin chain
Refer to Figure 7-2. The line on the graph labeled C represents the:
a. activation energy with an enzyme.
b. activation energy without an enzyme.
c. change in free energy.
d. change in entropy.
e. change in enthalpy.
Patients with Creutzfeldt-Jacob disease live ________ post diagnosis.
A. 10 to 20 years B. greater than 25 years C. 5 to 10 years D. less than 1 year E. 1 to 5 years