In the CNO Cycle, Carbon Is Used as a Catalyst

question 94

Multiple Choice

In the CNO cycle, carbon is used as a catalyst for the fusion of hydrogen into helium. This means that

• A) three helium nuclei fuse to form carbon.
• B) carbon facilitates the reaction but is not consumed in it.
• C) carbon boosts the energy from the reaction, which is why massive stars are luminous.
• D) carbon breaks apart into three helium nuclei.
• E) the reaction produces carbon nuclei in addition to helium.

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Definitions:

Standard Deviation

A quantification of the extent to which a group of values is varied or dispersed.

Comptroller

An officer or official in an organization who oversees financial and accounting matters, including audits, budgeting, and financial planning.

Sampling Distribution

The distribution of a statistic over many repeated samples drawn from the same population.

Standard Deviation

A tool for measuring the degree to which data points are scattered or spread apart.