Recall That Two Hydrogen Bonds Bind a and T, but Three

question 165

Multiple Choice

Recall that two hydrogen bonds bind A and T, but three hydrogen bonds bind G and C.The stability of DNA is affected by the number of hydrogen bonds, with more bonds promoting more stability.Double-stranded DNA molecules that have greater stability require more heat to be broken into single strands.Which double-stranded DNA molecule would likely require the lowest temperature in PCR?

• A) A molecule with 16 percent A
• B) A molecule with 23 percent G
• C) A molecule with 30 percent C
• D) A molecule with 35 percent T
• E) A molecule with 38 percent A

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Definitions:

Wheat Price

The cost per unit of wheat, which can fluctuate based on market conditions, supply and demand, and external economic factors.

Interest Rate Cap

A financial derivative or agreement that limits the maximum interest rate that can be charged on a variable-rate loan or mortgage.

Interest Rate Floor

An agreement in which a lower limit is set on the interest rate that can be paid on a financial obligation.

Collar

A strategy in finance used to limit the range of possible returns on an investment, often by buying and selling options.