The Two Strands of DNA in the Double Helix Are

question 69

Multiple Choice

The two strands of DNA in the double helix are held to each other by ________.

• A)covalent bonds
• B)ionic bonds
• C)metallic bonds
• D)dipole-dipole attractions

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Definitions:

Self-perpetuating

A process or activity that generates the conditions necessary for its continuation or growth without external input.

Jet Lag

A temporary sleep disorder that occurs when a person's internal body clock is out of sync with the time in a new time zone, often experienced after long flights.

East

A cardinal direction; the direction from which the sun rises, opposite of west.

West

A cardinal direction, opposite of east, often associated with sunset or the direction on the left when facing north.