Examlex
A few of the variables for which data were collected in the Internet & Life Project study include age, gender, income, monthly Internet bill, and number of hours spent shopping online per month. Which of the variables is categorical?
Nucleus
The membrane-bound organelle in eukaryotic cells that contains most of the cell's genetic material.
Electron Micrograph
A photograph or image obtained by using an electron microscope, which uses a beam of electrons to create an image of the specimen.
Black and White
A category or concept typically used in photography, art, and media to describe images or scenarios that lack color, consisting only of shades of black and white.
Cell Fractionation
The technique used to separate the components of cells by subjecting them to centrifugal force. See differential centrifugation and density gradient centrifugation.
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