Empathogens or entactogens are a class of psychoactive drugs that produce experiences of emotional communion, oneness, relatedness, emotional opennessâthat is, empathy or sympathyâas particularly observed and reported for experiences with 3,4- Methylenedioxymethamphetamine. This class of drug is distinguished from the classes of hallucinogen or psychedelic, and amphetamine or stimulant. Major members of this class include MDMA, MDA, MDEA, MDOH, MBDB, 6-APB, methylone, mephedrone, Î±MT ...
A cell is diploid if it contains exactly two copies of each chromosome. A cell is haploid if it contains exactly half of a speciesâ typical full set of genetic material. Haploid cells are often used in sexual reproduction. In cells, ploidy defines the number of copies of a chromosome found within the cell. The number of the basic set of chromosomes is described as the monoploid number. Most cells within a human (and other animals) are diploid, which means they have two copies of each chromosome.
A metalloid is a chemical element with properties in between, or that are a mixture of, those of metals and nonmetals. There is no standard definition of a metalloid, nor is there complete agreement as to which elements are appropriately classified as such.ecognition status, as metalloids, of some elements in the p-block of the periodic table. Percentages are median appearance frequencies in the list of metalloid lists. The staircase-shaped line is a typical example of the arbitrary metalânonmetal dividing line found on some periodic tables.