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Why does mitosis occur?

Mitosis is essential in the survival of multicellular organisms. In these organisms, mitosis occurs immediately after genesis. Cells continue to duplicate until the organism is fully developed. An adult human, for example, is made up of trillions of cells. Some of these cells become specialized and perform unique functions in the body. Cells that make up tissue, bones and organs all work together to help organisms function properly. With the exception of specialty cells, like brain cells, cells that die are constantly replaced by new ones.\nMitosis takes the genetic information of a parent cel..

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What are knee ligaments?

The MCL and the LCL are found on either side of the knee and keep it from wobbling from side to side. The ACL and the PCL are there to stabilize the tibia and the femur, the long bones in the leg that also make up the joint. The ACL keeps the tibia from slipping forward while the person runs, jumps or slows down. The PCL keeps the tibia from slipping backwards.

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What is a polar compound?

In chemistry, polarity affects a number of physical properties including solubility, surface tension and boiling and melting points. Scientists use polarity to determine whether molecules can mix to become a solution. Polar compounds mix with each other to create solutions. Non-polar compounds also mix with each other, but polar and non-polar compounds do not mix together to create a solution.\nPolarity in molecules is created by polar covalent bonds, in which two atoms share electrons to fill their respective valence orbits, creating a positive charge on the side opposite the electrons and a ..

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How long will it take to get to Jupiter?

The amount of time necessary to reach Jupiter varies depending where the planets are in their orbit. In 1989, the Galileo spacecraft took six years to travel between the two planets. An early mission by Voyager 1, launched at a more favorable time in the planets' orbits, took only two years. Launched in 2011, scientists expect the spacecraft Juno to reach Jupiter in five years. While seen as theoretically impossible, a spacecraft travelling at the speed of light would reach Jupiter in 43 minutes.

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What is riverbank erosion?

Riverbank erosion is driven by two primary components, the characteristics of the river bank and gravitational/hydraulic forces. A number of commercial or human activities impact both of these components, which ultimately leads to accelerated erosion.\nThree types of riverbank erosion occur: vertical, headward and lateral erosion. Vertical erosion makes a river deeper, lateral erosion makes it wider and headward erosion makes it longer.\nRiverbank erosion has four processes: attrition, corrosion, abrasion and hydraulic action. Erosion occurs from abrasion when river sediments collide with the ..

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What is caproic acid?

Caproic acid is a carboxylic acid, which means that it contains a carboxyl group of COOH. It comes from the chemical hexane and has a pKa value of 4.88. It is an oily liquid that is used as a flavoring agent in dairy products, beers, nuts, breads and strawberry-flavored foods. The word "caproic" comes from the Latin "capra," which means goat. Caproic acid gained this name due to its goat-like odor.

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What is the longest phase of mitosis?

Prophase accounts for 14 percent of the time that the cell is undergoing the process of mitosis. During prophase, the cell undergoes several transformations that prepare it for cell division. Some of the most noticeable changes that can be observed are the disappearance of the nucleolus as well as the enlargement of the nucleus in preparation for division.

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What are some differences between vertebrates and invertebrates?

Examples of invertebrates include comb jellies, belonging to the phylum Ctenophora, sponges, belonging to the phylum Porifera, molluscs of the phylum Mollusca, and flatworms of the phylum Platyhelminthes. Sea anemones, corals and jellyfish, all belonging to the phylum Cnidaria, are also invertebrates. There are almost 1 million known species of invertebrates as of 2015, and scientists believe there may be as many as 30 million living invertebrate species. The vast majority of living animals are invertebrates, representing over 97 percent of animal species.\nBecause vertebrates all belong to th..

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Is research on monkeys ethical?

A consequentialist considers the consequences of experimentation. If the consequences are good, if they provide benefits for research in medicine that could not be provided otherwise, they are judged as a good thing. A deontologist simply argues from principles they think are most appropriate for judging whether experimentation on monkeys is ethical. For instance, a deontologist could extend the sanctity of human life to all animals, and judge that experimenting on animals devalues their dignity and is therefore wrong.

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How do the stars in a star cluster change with time?

Stars are formed from large clouds of molecular gas, which are made up of many hundreds of solar masses of material. A "solar mass" is a unit of measurement that is equal to the mass of the sun. The gas that remains is heated and then blows away, leaving stars to accumulate in clusters through gravitational pull.\nOnce part of a cluster, individual stars can take one of two courses over time. They can be forced out of the cluster by reaching escape velocity, or they can remain a part of the cluster, through gradually drifting away from the center, according to NASA.\nThe stars that are farthe..

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