Given the Damage Caused by UV Radiation, the Kind of Gene

question 27

Multiple Choice

Given the damage caused by UV radiation, the kind of gene affected in those with xeroderma pigmentosum is one whose product is involved with

• A) mending of double-strand breaks in the DNA backbone.
• B) breakage of cross-strand covalent bonds.
• C) the ability to excise damage to single-stranded DNA and replace it.
• D) the removal of damaged areas of double-stranded DNA.
• E) causing affected skin cells to undergo apoptosis.

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Definitions:

Wavelengths

The distance between consecutive peaks (or troughs) in a wave, often used in the context of electromagnetic radiation.

Ground State

The lowest energy state of an atom or other particle, which is the most stable and preferred configuration.

Electrons

Fundamental particles that contribute to the electrical properties of atoms, possessing a negative charge and existing in the electron cloud.

Excited State

A condition of an atom, molecule, or nucleus in which it possesses more energy than its ground state.