In the Search for Intelligent Life, Why Do Scientists Tend

question 66

Multiple Choice

In the search for intelligent life, why do scientists tend to assume that its biochemistry is more likely to be based on the element carbon than on any other element?

• A) Carbon is the most versatile element, combining with the largest number of other elements in many different ways to produce long-chain molecules.
• B) Carbon is the only element that can combine into ring-shaped molecules, which is the shape of life-form molecular structure.
• C) Carbon releases far more energy than do other similar atoms when it combines with other elements, a process that is essential for the support of life.
• D) Scientists expect that life will mimic that on the surface of Earth, which is carbon-based.

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Definitions:

Accrue Interest

The process of recognizing interest earned or incurred on an outstanding debt over a period of time.

Reversing Entries

Journal entries made at the beginning of an accounting period to reverse or cancel out adjusting entries made at the end of the previous accounting period, simplifying the recording of transactions.

Liability Account

An account on a company's balance sheet that records debts or obligations the company needs to pay in the future.

Adjusting Entry

Accounting entries recorded at the close of an accounting cycle to distribute expenses and revenues to the period they truly belong to.