Phospholipids consist of a polar molecule, a phosphate group, a glycerol unit and two fatty acids. They are found in cell membranes, which enclose the cytoplasm and other parts of a cell. Steroids include cholesterol, cortisone and sex hormones, such as estrogen, testosterone and progesterone. They have a carbon backbone that contains four fused ring-like structures.
These are common questions, particularly after someone finds out their score from an IQ test. Lewis Terman (1916) developed the original notion of IQ and proposed this scale for classifying IQ scores: Over 140 - Genius or near genius. 120 - 140 - Very superior intelligence.
The Stanford-Binet and Wechsler tests use the same score scale: average intelligence is between 90 and 110; genius, or gifted, is above 140; and below 70 is considered mentally deficient. The Cattell test uses a wider scoring scale, so that scores between 90 and 140 are average, and genius level IQ is over 160.he three main types of IQ tests all use a scoring scale from 0 to 200. Test scores are calculated so that the average score for each test is 100 -- so a 100 IQ score designates average intelligence.