BioScience Dictionary

 
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Ot.

Found Polarity 5 times.

Displaying results 1 to 10.

1. Antiparallel
Refers to two linear polymer s that are opposite in orientation or polarity .

2. Diffusion coefficient (diffusion constant)
A constant which is a measure of how well a dissolved substance can spread, or diffuse, through a concentration gradient (a fluid which has a higher concentration on one end and a lower concentration on the other end of the container). This depends on the particle size of the substance, the temperature, and the polarity of the substance. The constant has the symbol of k(subscript D), and is used to calculate diffusion rates of the substance.

3. Hyperpolarization
A shift in the electrical charge, or polarity , within a cell toward the negative.

4. Polar mutation (polarity mutation)
A mutation in a single gene which affects the rate of expression of other genes that are near it on a chromosome .

5. Polarity
* In chemistry, this refers to the irregular distribution of electrons in a molecule; polar molecules typically dissolve in water. * In genetics, this refers to the distinction between the 5' and 3' ends of nucleotide sequence s.

View web definitions »

Learn more about Polarity »