The mitochondria of brown adipocytes have a unique protein in their inner membrane, Thermogenin (uncoupling protein 1 ), provides a path for protons to return to the matrix without passing through the FoF1 complex.

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#Unit 13. Methods in Biology

When excited by absorption of a photon of light, GFP emits a photon (that is, it fluoresces) in the green region of the spectrum. 

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#Unit 8. Inheritance Biology

Number of Barr bodies

Differential expression of a gene that depends on the sex of the parent that transmitted the gene.

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#Unit 2. Cellular Organization

Detyrosylated microtubules are more stable, because they are more resistant to depolymerization by kinesin-13 and related proteins.

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#Unit 7. System Physiology – Animal

L-type calcium channels become inactivated (i.e., they close) within about 100 to 150 milliseconds after opening

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#Unit 6. System Physiology – Plant

A brief pulse of red light will induce a response, provided that the light is sufficiently bright, and conversely, very dim light will work if the irradiation time is long enough. 

This reciprocal relationship between fluence rate and time is known as the law of reciprocity