DNA Is Tightly Wound in a Double Helix for Much

question 14

Multiple Choice

DNA is tightly wound in a double helix for much of the time. Which of the following enzymes unwinds the double helix and begins transcription of RNA?

• A) RNA polymerase
• B) DNA polymerase
• C) transcriptase
• D) RNA isomerase

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Definitions:

Zero Coupon Treasury Bond

A government bond that does not pay interest throughout its life and is sold at a discount from the face value.

Reinvestment Rate Risk

The risk that the returns from reinvesting cash flows will be lower than expected due to changes in interest rate.

Market Interest Rate

The prevailing rate of interest available in the marketplace for securities of similar risk and maturity.

Coupon Rate

The coupon rate represents the yearly interest percentage that is paid out on a bond, depicted as a proportion of its nominal value.