Binary fission occurs in eukaryotic tissue cells, but the process is more complicated: see mitosis.
Basically, a cell copies its DNA, and then splits down the middle, creating two daughter cells.
Charisma Carpenter
Charisma Lee Carpenter (born July 23, 1970) is an American actress. She is best known for playing the character Cordelia Chase in the television series "Buffy the Vampire Slayer" and its spin-off "Angel".
Carpenter was born in Las Vegas, Nevada. At 15, her family moved to Rosarito B.C., Mexico. Later, they moved to Chula Vista (a suburb of San Diego). After graduating high school, she was a San Diego Chargers cheerleader in 1991 before beginning her Hollywood career. She had also sky-dived. She married Damian Hardy on October 5, 2002. She gave birth to their son Donavan Charles Hardy on March 24, 2003.
Paul Watzlawick
Paul Watzlawick PhD (July 25, 1921 – March 31, 2007) was a theoretician in communication theory. He also commented in the fields of family therapy and general psychotherapy. He lived and worked in California until his death in 2007 in Palo Alto.
He formulated five axioms. They are:
Watzlawick is author of 18 books (in 85 foreign language editions) and more than 150 book articles and book chapters. Books he has written or on which he has collaborated include:
Neurotransmitter
Neurotransmitters are chemical messengers. They send information between neurons by crossing a synapse. Electrical signals are not able to cross the gap between most neurons. They are changed into chemical signals to cross the gap. Neurotransmitters act mostly on chemical synapses. Once they reach the next neuron they are absorbed. The neuron then changes this chemical signal back into an electrical signal called an action potential. The action potential passes across the next neuron and to the next synapse.
Many neurotransmitters are made from amino acids, which are part of your diet and it takes only a few steps to convert them. Neurotransmitters play a major role in shaping everyday life and functions. Scientists do not yet know exactly how many neurotransmitters exist, but more than 100 chemical messengers have been identified.
Each neurotransmitter has a different function. For example: dopamine is used in reward and pleasure and noradrenaline is used in an animal's "fight or flight" response. Neurotransmitters also regulate the passing of messages. This is because an action potential must be a certain strength before the neurotransmitters are released. The strength required to release the neurotransmitter is called a threshold.
The most common transmitter is glutamate, which is excitatory at well over 90% of the synapses in the human brain. The next most prevalent is called GABA, which inhibits at more than 90% of the synapses that do not use glutamate.
Neurotransmitters are transported within neurons by small "sacks" called vesicles. When these vesciles come into contact with the neuron's cell membrane, it opens. This releases the neurotransmitters into the synaptic cleft.
Until the early 20th century, scientists assumed that the majority of synaptic communication in the brain was electrical. However, through the careful histological examinations by Ramón y Cajal (1852–1934), a 20 to 40 nm gap between neurons, known today as the synaptic cleft, was discovered. The presence of the gap suggested chemical messengers moved across the synaptic cleft. In 1921 German pharmacologist Otto Loewi (1873–1961) confirmed that neurons can communicate by releasing chemicals. By experiments involving the vagus nerves of frogs, Loewi was able to slow the heart rate of frogs by controlling the amount of saline solution present around the vagus nerve.
Loewi asserted that sympathetic regulation of cardiac function can be mediated through changes in chemical concentrations. Otto Loewi also discovered acetylcholine (ACh)—the first known neurotransmitter. Some neurons do, however, communicate by electrical synapses through the use of gap junctions, which allow specific ions to pass directly from one cell to another.
Hard rock
Hard rock is a variation of rock music with roots in early 1960s garage rock and psychedelic rock. The term "hard rock" may be used several genres such as punk rock and grunge in order to distinguish them from the more radio-friendly pop rock genre.
Sally Beamish
Sally Beamish (born London, 26 August 1956) is an English composer. She has written music for orchestra, chamber music, vocal and choral music.
Sally studied the viola at the Royal Northern College of Music. Later she also studied in Germany and Italy.
Sally started her career playing the viola in a chamber group called the Raphael Ensemble. The experience of playing in small groups was important for her development as a composer. Her music often combines and contrasts solo instruments, exploring the sounds they can make.
She has written works for the Swedish and Scottish Chamber Orchestras and has had works performed at the BBC Proms. Her trumpet concerto, written for Håkan Hardenberger and the National Youth Orchestra of Scotland was performed at the Proms in 2003 with Martyn Brabbins conducting. She has also written concertos for the flute, viola, saxophone, percussion and accordion and is planning to write concertos for viola (her third), saxophone quartet and cello.
She has written a stage musical about the Scottish Highlands. She lives in Scotland with her husband and young daughter.
Nakhodka
Nakhodka (Russian "Находка") is a port city in Primorsky Krai, Russia. It is one of the most eastern cities in Russia. Nakhodka is a port on the Japan Sea. It is located around Nakhodka Bay. "Nakhodka" means "Lucky find" in Russian.
The village Amerikanka was the first permanent settlement at the location of the current city. It was founded in 1907. Nakhodka became an urban-type fishing settlement in 1941. It received city status on May 19, 1950. This date is now called "City Day".
The economy of the city is based mainly on the port and port-related businesses. This include processing and canning fish. In Soviet times, Nakhodka was the only Soviet port in the Far East open to foreign vessels. After Vladivostok started being used by foreigners in 1991, the port of Nakhodka is not used as much as before. Economic activity in the city has become much less because of this..
Nakhodka is still an important international port. It is the center of the coastal trade. Exports include timber, coal, fluorspar, honey, fish and seafood.
Sumatra
Sumatra, known also as "Sumatera", is the sixth largest island in the world. It is in western Indonesia. It is to the west of the Sunda Islands, and is bordered by the Indian Ocean. Sumatra contains the provinces of Daerah Istimewa Aceh, Riau, Riau Islands, Bangka Belitung Islands, Jambi, Bengkulu, Lampung, North Sumatra, South Sumatra, and West Sumatra. Sumatra has an area of about 443,066 km².
Whigs
The Whigs were a political faction and then a political party in the parliaments of England, Scotland, Great Britain and the United Kingdom. Between the 1680s and 1850s, they contested power with their rivals, the Tories. The British prime minister was usually from one of the two parties.
The Whigs played a central role in the Glorious Revolution of 1688, and were the enemies of the Stuart kings and pretenders, who were Roman Catholic. The Whigs took full control of the government in 1715. They held it until King George III, coming to the throne in 1760, allowed Tories back in.
When they held power, the Whigs purged (got rid of) the Tories from all major positions in government, the army, the Church of England, the legal profession and local officials.
Their most famous leader was Robert Walpole, who kept control of the government from 1721 to 1742.
Espionage