During replication, which enzyme unwinds the DNA double helix?
A. DNA primase
B. DNA polymerase I
C. DNA helicase
D. DNA gyrase
E. DNA ligase
C. DNA helicase
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A cinereous mourner bird’s chicks resemble the poisonous larvae of flannel moths. This is an example of____
a. aposematic coloration b. Müllerian mimicry c. competitive exclusion principle d. cryptic coloration e. Batesian mimicry
What are the Biceps brachii attached to?
What will be an ideal response?
The ____________________ consists of tissues that cover and protect the plant's exposed surfaces.
A. phloem B. ground tissue system C. dermal tissue system D. vascular tissue system E. sclerenchyma
Compare the placement of eyes in an ostrich to that in an owl. What are the trade-offs in physical constraint that each faces?
What will be an ideal response?