Railroads Are

question 9

Multiple Choice

Railroads are:

• A) more energy efficient than most other modes
• B) more likely to haul energy producing materials than other modes
• C) not as energy efficient as most other modes
• D) buying more energy efficient locomotives

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Definitions:

Louis Pasteur

A French biologist, microbiologist, and chemist renowned for his discoveries of the principles of vaccination, microbial fermentation, and pasteurization.

Nucleic Acid

Macromolecules essential to all known forms of life, which store and transmit genetic information in cells mainly in the forms of DNA and RNA.

RNA-First Hypothesis

In chemical evolution, the proposal that RNA originated before other macromolecules and allowed the formation of the first cell(s).

Enzymes

Biological molecules that significantly speed up the rate of virtually all of the chemical reactions that take place within cells.