Question
Oncogenes are like ____.
Answer
Oncogenes are like stepping on the gas pedal, mutated tumor suppressor genes are like cutting the brakes.
Note: Oncogenes (or, more properly, proto-oncogenes) code for cell cycle–promoting proteins; when mutated, a proto-oncogene becomes an oncogene, promoting rapid cell cycling. Tumor suppressor genes code for repair or cell cycle–inhibiting proteins; when mutated, the cell cycle is allowed to proceed unchecked.
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There are two chemically distinct forms of nucleic acids within eukaryotic cells.____.
The bulk of DNA is found in ____.
Nucleosides are composed of a ____.
____ are composed of a five-carbon sugar bonded to a nitrogenous base.
Nucleosides are formed by covalently linking the ____.
Nucleotides are formed when one or more ____.