The Melting Profile for a DNA Is Found to Differ

question 35

Multiple Choice

The melting profile for a DNA is found to differ in two different salt solutions. In 0.001 M NaCl, T_m = 55 ° C, and in 0.01 M NaCl, T_m = 65 ° C. The fundamental reason for this change is

• A) higher salt concentration increases the electrostatic repulsions between phosphates
• B) the base stacking is more effective in high salt
• C) hydrogen bonding between complementary bases in enhanced at high salt
• D) higher salt concentration decreases the electrostatic repulsions between phosphates

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Definitions:

Passive-Active Pattern

Refers to the behavior patterns where individuals oscillate between passive and active roles, often in the context of relationships or decision-making.

Communication

The process of exchanging information, ideas, or feelings between individuals or groups, typically through a common system of symbols, speech, or behavior.

Attack

An aggressive and violent action against someone or something.

Defend

The action of protecting oneself, others, or a position against challenge, harm, or criticism.