The Continuous Part of an X-Ray Spectrum of an Atom

question 139

Multiple Choice

The continuous part of an x-ray spectrum of an atom occurs because

• A)of photon absorption.
• B)of the photoelectric effect.
• C)electrons in the atom make transitions to lower energy levels.
• D)of the uncertainty principle.
• E)of rapid deceleration of the bombarding electrons.

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Definitions:

Codons

Sequences of three nucleotides in mRNA that code for specific amino acids during protein synthesis or signal the termination of protein elongation.

Codon Sequence

A specific sequence of three nucleotides in mRNA that specifies the addition of a particular amino acid to a protein chain during biosynthesis.

Amino Acid Sequence

The amino acid sequence is the order in which amino acids are linked together via peptide bonds to form a protein.

Synthesizes Proteins

The process by which cells build proteins from amino acids based on the instructions encoded in genes.