January 12, 2015 Earth Science
A tsunami, Japanese for “great harbor wave,” is a seismic sea wave, formed as the result of sudden changes in the sea floor brought on by an earthquake. There are four basic stages to a tsunami. Although the cycle starts…
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The cell cycle is a complex mechanism that results in cell growth and propagation. In eukaryotes, such as humans, the cycle is divided into G1, S, G2, and M phases, where M represents the process of mitosis (i.e. cell division),…
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January 12, 2015 Earth Science
The rapid expansion of humanity’s technological capabilities over the last 100 years has gifted the populations of the world’s developed nations with a staggering amount of quickly available information. Not least amongst this is the ability to learn of horrendous…
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January 12, 2015 Earth Science
Oceans become salty when the rivers and their tributaries and streams that flow off mountains and out of all higher to lower places pick up biological materials and small rocks and dump these into the ocean. Their salinity then develops from…
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Progesterone is a steroid hormone produced by the ovum and placenta, making it female-specific. Progesterone is responsible for preparing the uterus for pregnancy, but research published in the journal Nature in March 2011 identified another role for the hormone –…
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Human fertilization occurs when the male reproductive cell, sperm, meets the female reproductive cell, an egg. The sperm of a male are produced inside the testes, and stored in the epidydymis. Ejaculation of sperm occurs through the head of the…
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January 12, 2015 Earth Science
Abstract Water is necessary for survival; however, with the population on our planet increasing, usable water is becoming short in supply, what can we do to keep our planet from running out of usable water? Even though water is a…
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Exosomes are 30 – 90 nm vesicles secreted by mammalian cells and would be the result of late endosomes or multi vesicular bodies (MVB) coalescing with the cell membrane. According to scientists, the initial even in the formation of exosomes…
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Eukaryotic animal cells are enclosed by an outer cell membrane unlike the plant cells that have an external cell wall. This plasma membrane is semi-fluid and selectively permeable in nature. It consists of a phospholipids’ bi-layer with integral proteins embedded…
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January 12, 2015 Earth Science
You’ve turned on the evening news in the heat of summer and hear a news report of areas facing a drought. What causes this drought? Lack of rain? Overuse of water? If your part of the world experiences little rainfall,…
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