Thymine Dimers

question 9

Multiple Choice

Thymine dimers

• A)form when DNA is exposed to carcinogens such as tobacco smoke.
• B)are rarely removed by DNA repair enzymes.
• C)form when DNA is exposed to UV radiation.
• D)result in abnormal protein structure which causes red blood cells to sickle.

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Definitions:

Calcium Carbonate

A chemical compound with the formula CaCO3, found in rocks as the minerals calcite and aragonite and is the main component of shells of marine organisms, snails, and eggs.

Greenhouse Gases

Gases in Earth's atmosphere that trap heat, contributing to the greenhouse effect and global warming.

Fossil Fuels

Natural fuels such as coal, oil, and natural gas, formed from the decayed remains of plants and animals over millions of years.

Cellular Respiration

The metabolic process by which cells convert nutrients into energy (ATP), involving the consumption of oxygen and release of carbon dioxide.