Which of the following are necessary for DNA replication in vitro?
A) RNA, helicase, primers, DNA polymerase
B) Okazaki fragments, helicase, DNA polymerase
C) Template DNA, DNA polymerase, four dNTPs, primers, magnesium ions
D) Template DNA, four dNTPs, magnesium ions
E) DNA can't replicate in vitro
C
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What key words does the question contain and what do they mean?
What will be an ideal response?
Canaliculi are narrow canals that allow osteocytes trapped in lacunae to remain in contact with each other.
a. true b. false
What is the evidence for membrane fluidity?
What will be an ideal response?
What is the evolutionary significance of a flower that has large, brightly colored petals?
A) Such flowers produce only microspores or megaspores, not both. B) In general, these are aquatic plants, and water aids in their pollination, regardless of color and odor. C) Such plants are usually self-pollinators and do not rely on external factors for pollination. D) The wind is a significant factor in pollination, especially because of the large petals. E) These flowers attract pollinators that are animals.