Which of the Following Correctly Describes the Structure of DNA

question 9

Multiple Choice

Which of the following correctly describes the structure of DNA as determined in 1953? 1.A phosphate backbone with sugars linked together by nitrogenous base bonds.
2) A sugar-phosphate backbone with nitrogenous bases linked together by weak bonds
3) A nitrogenous base backbone with sugars linked together by phosphate bonds.

• A) 1
• B) 2
• C) 3
• D) 1 and 3
• E) None of these

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Definitions:

Electronically Managed

Pertains to systems or components controlled or regulated by electronic devices and software, often optimizing performance and efficiency.

Shorepower

Term used to describe the means used to connect a truck/trailer combination to AC mains electrical power to supply hotel load electricity. A shorepower or hotel load grid exists on many U.S. and Canadian interstate routes. It is referred to 110, 230, and 460 V-AC mains feeds.

Hotel Loads

The electrical loads in a vehicle (often in trucking or mobile homes) not related to propulsion, such as lighting, climate control, and appliances.

AC Power

Alternating current electric power, characterized by a flow of charge that periodically reverses direction, used in households and industries for electrical devices and lighting.