Id: unconscious part of the mental apparatus which is partly made up of inherited instincts and partly by acquired, but repressed components.

 

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Id: unconscious part of the mental apparatus which is partly made up of inherited instincts and partly by acquired, but repressed components.

Plasmids: Self-replicating, circular DNA molecules found in bacterial cells; often used as vectors in recombinant DNA technology. Small circles of double-stranded DNA found in some bacteria. Plasmids . . . View Full Definition

Phospholipids: Asymmetrical lipid molecules with a hydrophilic head and a hydrophobic tail. Lipids with a phosphate group in place of one of the three fatty acid chains. Phospholipids are the building bloc . . . View Full Definition

Quid Pro Quo Harassment: Quid pro harassment involves expressed or implied demands for sexual favors in exchange for some benefit (a promotion, pay increase, etc.) or to avoid some detriment (termination, demotion, . . . View Full Definition

Plastids: Membrane-bound organelles in plant cells that function in storage (of food or pigments) or food production. Term for any double membrane-bound organelle. Chloroplasts contain the chemicals f . . . View Full Definition

Peptides: Short chains of amino acids.

Predictive Validity: Used in the test validation process to measure the relationship between test scores and actual job performance.

Post-Accident Testing: The process of testing an employee involved in a workplace accident for the presence of drugs or alcohol.

Polysaccharides: Long chains of monosaccharide units bonded together; e.g., glycogen, starch, and cellulose.

Polynucleotides: Long chains of nucleotides formed by chemical links between the sugar and phosphate groups.