in shape of nucleus
51Brain — This article is about the brains of all types of animals, including humans. For information specific to the human brain, see Human brain. For other uses, see Brain (disambiguation). A chimpanzee brain The brain is …
52Cell (biology) — Allium cells in different phases of the cell cycle …
53Puberty — refers to the process of physical changes by which a child s body becomes an adult body capable of reproduction. Puberty is initiated by hormone signals from the brain to the gonads (the ovaries and testes). In response, the gonads produce a… …
54Nuclear weapon design — The first nuclear weapons, though large, cumbersome and inefficient, provided the basic design building blocks of all future weapons. Here the Gadget device is prepared for the first nuclear test: Trinity. Nuclear weapon designs are physical,… …
55orbital — /awr bi tl/, adj. 1. of or pertaining to an orbit. n. 2. Physics, Chem. a. a wave function describing the state of a single electron in an atom (atomic orbital) or in a molecule (molecular orbital). b. the electron in that state. [1535 45; < NL,… …
56Hippocampus — For other uses, see Hippocampus (disambiguation). Brain: Hippocampus The hippocampus is located in the medial temporal lobe of the brain. In this lateral view of the human brain, the frontal lobe is at le …
57heredity — /heuh red i tee/, n., pl. heredities. Biol. 1. the transmission of genetic characters from parents to offspring: it is dependent upon the segregation and recombination of genes during meiosis and fertilization and results in the genesis of a new… …
58physical science, principles of — Introduction the procedures and concepts employed by those who study the inorganic world. physical science, like all the natural sciences, is concerned with describing and relating to one another those experiences of the surrounding… …
59Visual cortex — Brain: Visual cortex View of the brain from behind. Red = Brodmann area 17 (primary visual cortex); orange = area 18; yellow = area 19 …
60Galaxy — This article is about the astronomical structure. For other uses, see Galaxy (disambiguation). NGC 4414, a typical spiral galaxy in the constellation Coma Berenices, is about 55,000 light years in diameter and approximately 60 million light… …
