What is the name of the enzyme that separates the two strands of DNA during replication?
A. DNA polymerase
B. DNA ligase
C. primase
D. helicase
E. topoisomerase
D
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By the end of the Devonian period, which of the following plants populated the landscape?
a. flowering plants and trees b. mosses and other bryophytes c. ferns, horsetails, and seed plants d. algae and early vascular plants
Mammals fill their lungs using a negative pressure mechanism.
Answer the following statement true (T) or false (F)
Explain what effect histone deacetylase inhibitors would have on gene expression and why they may be an effective anticancer therapeutic because of their impact on tumor suppressor genes
What will be an ideal response?
Which of the following forms of energy was NOT involved in the production of large organic molecules in the primitive reducing atmosphere?
A. radiation from the sun B. electrical energy C. sound D. heat E. radioactivity