Superconductivity Occurs in Certain Substances

question 13

Multiple Choice

Superconductivity occurs in certain substances

• A) only at very low temperatures.
• B) only at very high temperatures.
• C) at all temperatures.
• D) only when they are in the liquid state.

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Definitions:

Enzymes

Biological molecules, typically proteins, that significantly speed up the rate of virtually all of the chemical reactions that take place within cells.

Bacteria

Microscopic, single-celled organisms found in diverse environments that play key roles in nutrient cycling, disease, and fermentation.

Transcription Factors

Proteins that bind to specific DNA sequences, controlling the rate of transcription of genetic information from DNA to mRNA.

Repressors

Proteins that bind to DNA and inhibit the transcription of certain genes.